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NTN Main Spindle Bearings

Main Spindle Bearings

11. Angular Contact Ball Bearings for Axial Loads CONTENTS 11. Angular Contact Ball Bearings for Axial Loads q Features and types

w Standard cage types e Bearing designations r Accuracy of double-direction angular contact thrust ball bearings t Accuracy of high-speed duplex angular contact ball bearings for axial loads y Basic preload u Shaft and housing fits i Recommended lubrication specifications o Angular contact ball bearings for axial loads HTA U type

248

271 248 249 249 250 251 252 253 253 254 256 260

!0 Dimension tables

Double-direction angular contact thrust ball bearings Angular contact ball bearings for axial loads

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NTN Main Spindle Bearings

11. Angular Contact Ball Bearings for Axial Loads

1 Features and types

NTN provides a range of thrust bearings for the main spindles. This includes 5629 and 5620 series for high axial rigidity (contact angle 60°) and HTA U(A) series high-speed duplex angular contact ball bearings for axial loads with optimized internal design (contact angle 40°, 30°). These bearings are used in conjunction with NN30, NN49, or NNU49 series double-row cylindrical roller bearings (matched bearings must have the same bore and outside diameter).

Table 11.1 Types of angular contact ball bearings for axial loads

5629 and 5620 series HTA0U (A)..DB, HTA9U (A)..DB series

Bearing type

Initial contact angle Cage material

60 High-strength machined brass cage These series can withstand axial loads in both directions. Due to a larger contact angle, rigidity in axial directions is enhanced. The structure of these bearings limits them to grease-lubricated vertical shaft applications.

40

30

Molded resin, machined phenolic, high-strength machined copper alloy cage

These duplex angular contact ball bearing series have similar design to the double-row thrust angular contact ball bearing series, but are different in terms of their widths (see the diagrams below). Since their contact angles are lower at 40° and 30°, the series boast highspeed capability. However, their axial rigidity is less than double-row thrust angular contact ball bearings with 60° contact angle.

Features

A double-direction thrust angular contact ball bearing can be readily interchanged with a duplex angular contact ball bearing simply by replacing spacer C with spacer D; the dimensions of the shaft and housing remain unchanged. Dimension A = Dimension 2B A 2B Spacer C Spacer D

Interchangeability Double-direction thrust angular contact ball bearing High-speed duplex angular contact ball bearing for axial loads

5629 series 5620 series

HTA9UDB series HTB0UDB series

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NTN Main Spindle Bearings

2 Standard cage types

Table 11.2 Standard cage of angular contact ball bearing for axial loads

Bearing series 5629 5620 HTA9U (A) HTA0U (A) HTA920 HTA938U HTA007 HTA038U Machined phenol cage Machined brass cage 562920 562964 562005 562064 HTA940U HTA964U HTA040U HTA064U

Notes: Cage types may be subjected to change without notice. For details, contact NTN Engineering.

3 Bearing designations

562 0 20M / GN P4

Tolerance class code P5: NTN Class 5 P4: NTN Class 4 Internal clearance code GN: Normal preload GM: Medium preload Bore code (refer to the dimensions tables) without M: Tapered shaft small side diameter type (Ex.: 562020 100 mm bore) with M: Tapered shaft large side diameter type (Ex.: 562020 103 mm bore) Dimension series code Bearing type

5S - HTA 0 20 U A T2 DB / GN P4L

Tolerance class code P5: JIS Class 5 P4: JIS Class 4 L: Outer ring outside diameter tolerance for axial load Internal clearance code GN: Normal preload GM: Medium preload Duplex arrangement code DB: back-to-back (double-row) DTBT: tandem back-to-back (four-row) Cage code No code: Standard cage T2: Molded resin L1: Machined brass cage Contact angle code No code: 40° A: 30° Bearing series: ULTAGE Nominal bore diameter (see the dimensions tables) Dimension series code Bearing type Material code 5S: Material of rolling element is ceramics No code: Bearing steel

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NTN Main Spindle Bearings

4 Accuracy of double-direction angular contact thrust ball bearings

Table 11.3 Inner rings

Nominal bore diameter d Single plane mean bore diameter deviation dmp Perpendicularity of inner ring face with or bore diameter deviation ds respect to the bore Sd Class 5 high low 0 0 0 0 0 0 0 0 6 8 9 10 13 15 18 23 Class 4 high low 0 0 0 0 0 0 0 0 5 6 7 8 10 12 15 18 Class 5 Class 4 max 8 8 8 9 10 11 13 15 4 4 5 5 6 7 8 9 Axial runout Sia Class 5 Class 4 max 5 5 6 6 8 8 10 13 3 3 5 5 6 6 8 10 Width variation VBs Class 5 Class 4 max 5 5 6 7 8 10 13 15 2.5 3 4 4 5 6 7 9 Unit: Bearing height deviation Ts Class 5 high 0 0 0 0 0 0 0 0 Class 4 low 300 400 500 600 700 800 900 1 000

over 18 30 50 80 120 180 250 315

incl. 30 50 80 120 180 250 315 400

Table 11.4 Outer rings

Nominal bore diameter D Single plane mean outside diameter deviation Dmp or outside diameter deviation Ds Class 5 high 30 40 50 60 60 75 90 110 120 Class 4 low 40 50 60 75 75 90 105 125 140

Unit: Perpendicularity of outer Width variation Axial runout ring outside surface with respect to the face Sea VCs SD Class 5 Class 4 Class 5 Class 4 Class 5 Class 4 max max max 8 8 9 10 10 11 13 13 15 4 4 5 5 5 7 8 10 13 Identical to Bs relative to d of the same bearing. 5 6 8 8 8 10 11 13 15 2.5 3 4 5 5 7 7 8 10

over 30 50 80 120 150 180 250 315 400

incl. 50 80 120 150 180 250 315 400 500

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NTN Main Spindle Bearings

5 Accuracy of high-speed duplex angular contact ball bearings for axial loads

Table 11.5 Inner rings

Nominal bore diameter d Single plane mean bore diameter deviation dmp Class 5 high low 0 0 0 0 0 0 0 0 0 6 8 9 10 13 13 15 18 23 Class 41 high low 0 0 0 0 0 0 0 0 0 5 6 7 8 10 10 12 14 16 Unit: Overall width Width variation variation of assembled bearing VBs Bs Class 5 Class 4 Class 5 Class 4 max high low 0 0 0 0 0 0 0 0 0 240 240 300 400 500 500 600 700 800 5 5 6 7 8 8 10 13 15 2.5 3 4 4 5 5 6 8 10 Nominal bore diameter d Single radial plane bore Mean bore diameter variation diameter deviation Vdsp Vdmp Diameter series 9 Diameter series 0 Class 5 Class 4 Class 5 Class 4 Class 5 Class 4 max max max 6 8 9 10 13 13 15 18 23 5 6 7 8 10 10 12 14 17 5 6 7 8 10 10 12 14 18 4 5 5 6 8 8 9 11 12 3 4 5 5 7 7 8 9 12 2.5 3 3.5 4 5 5 6 8 9 Unit: Perpendicularity of Axial runout inner ring face with respect to the bore Sia Sd Class 5 Class 4 Class 5 Class 4 max max 8 8 8 9 10 10 11 13 15 4 4 5 5 6 6 7 8 10 5 5 6 6 8 8 8 10 13 3 3 5 5 6 6 6 8 10

over 18 30 50 80 120 150 180 250 315

incl. 30 50 80 120 150 180 250 315 400

1The tolerance of bore diameter deviation ds is the same as the tolerance of single plane mean bore diameter deviation dmp.

over 18 30 50 80 120 150 180 250 315

incl. 30 50 80 120 150 180 250 315 400

Table 11.6 Outer rings

Nominal bore diameter D Single plane mean outside diameter deviation Dmp and outside diameter deviation Ds Class 5L or Class 4L2 Class 5 Class 4 2 high high high low low low 25 30 36 43 43 50 56 62 68 36 43 51 61 61 70 79 87 95 0 0 0 0 0 0 0 0 0 7 9 10 11 13 15 18 20 23 0 0 0 0 0 0 0 0 6 7 8 9 10 11 13 15 Axial runout Sea Class 5 Class 4 All classes 8 10 11 13 14 15 18 20 23 5 5 6 7 8 10 10 13 15 Cs All classes Identical to Bs relative to d on the same bearing. Overall width variation of assembled bearing

Unit: Width variation VCs Class 5 Class 4 max 5 6 8 8 8 10 11 13 15 2.5 3 4 5 5 7 7 8 10

over 30 50 80 120 150 180 250 315 400

incl. 50 80 120 150 180 250 315 400 500

2 The tolerance of outside diameter deviation Ds to be applied to the Class 4 and Class 2 is same as the tolerance of the mean outside diameter deviation dmp. Note that the Class 4 is applicable to diameter series 0 and 2, and the Class 2 is applicable to all the diameter series. Note: This standard is the NTN standard.

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NTN Main Spindle Bearings

6 Basic preload

The initial internal clearance or initial preload must be selected with consideration of the lubricating method, maximum speed, and required axial rigidity. Although usage with normal preload (GN) within the allowable speed range is possible for both grease lubrication and air-oil lubrication, ask NTN Engineering to recommend the appropriate preload if axial rigidity is required and you want to inhibit temperature rise of the main spindle. The standard preloads are summarized in Table 11.7.

Table 11.7 Basic preload 5629 5620 HTA9UDB HTA9UADB HTA0UDB

Unit:

Bore Bore number Normal GN Medium GM Normal GN Medium GM Normal GN Medium GM Normal GN Medium GM Normal GN Medium GM Normal GN Medium GM number 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 24 26 28 30 32 34 36 38 40 44 48 52 56 60 64 4 900 500 7 350 750 3 900 400 5 900 600 3 900 400 5 900 600 2 940 300 4 400 450 3 900 400 2 940 300 4 400 450 4 900 500 5 900 600 6 850 700 8 850 900 11 800 1 200 2 450 250 3 900 400 2 450 250 3 900 400 3 450 350 5 900 600 1 770 180 3 450 350 1 960 200 2 940 300 1 960 200 3 450 350 1 960 200 3 250 330 1 270 130 2 450 250 885 90 1 770 180 980 100 1 270 130 1 960 200 2 450 250 1 470 150 2 450 250 980 100 1 670 170 685 70 1 270 130 1 960 200 2 940 300 3 900 400 4 900 500 6 850 700 8 850 900 10 800 1 100 3 450 350 5 400 550 7 350 750 9 300 950 12 700 1 300 15 700 1 600 17 700 1 800 5 900 600 11 800 1 200 1 470 150 2 450 250 1 470 150 2 450 250 980 100 1 570 160 1 960 200 885 90 1 960 200 590 60 1 470 150 980 100 1 670 170 685 70 1 270 130 490 50 885 90 490 50 785 80 294 30 685 70 05 06 07 294 30 590 60 08 09 10 11 12 13 14 15 16 17 18 19 20 21 980 100 2 450 250 22 24 26 1 470 150 3 450 350 28 30 32 2 450 250 3 450 350 3 900 400 4 900 500 6 850 700 7 850 800 34 36 38 40 44 48 52 56 60 64

HTA0UADB

390 40

685 70

147 15

294 30

2 450 250 4 900 500

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NTN Main Spindle Bearings

7 Shaft and housing fits

Fits given in Table 11.8 are recommended for angular contact ball bearings for axial loads. To maintain high accuracy, provision of interference between the shaft and the bore of inner ring is essential. The fit of the housing and bearing should be same as that for cylindrical roller bearings, since an angular contact ball bearing is normally used together with a cylindrical roller bearing.

Checking concentricity of outside diameter of outer ring after bearing

Controlling concentricity of outer ring assembly is necessary for reduction of axial runout of the main spindle. Measure and control the concentricity of outer ring shown in Fig. 11.1 and "6. Handling of Bearings, 2 Mounting" in the Technical Data section.

Table 11.8 Fit to shaft

Nominal bore diameter d over Measurement of concentricity of outer ring 2.5 10 18 30 50 80 120 180 incl. 10 18 30 50 80 120 180 250

Unit: Fit of inner ring to shaft 0 0 0 0 0 0 0 0 2T 2T 2.5T 3T 3.5T 4T 5T 6T

Fig. 11.1 Concentricity

Note 1: Target the median value. 2: For high-speed applications where dmn value exceeds 0.75 106, the fit should be increased.For such an arrangement, consult NTN Engineering. T: Tight (Interference) fit

8 Recommended lubrication specifications

Angular contact ball bearings for axial loads are usually used with grease lubrication or air-oil lubrication. Recommended specifications of the lubrication methods are described below.

Grease lubrication

Air-oil lubrication

¡Recommended location of nozzle Refer to "7. Lubrication of Bearings 2 Recommended location of nozzle for air-oil lubrication" in the Technical Data section. ¡Recommended specifications of nozzle Nozzle bore diameter : From 1 to 1.5 mm Number of nozzles: One nozzle for each bearing, depth of nozzle bore should be four to six times of nozzle bore diameter. ¡Recommended specifications of air-oil Oil type: Spindle oil Viscosity grade: ISO VG from 10 to 32 (32 is preferable)

Table. 11.9 Air and oil amount

Bearing types

¡Recommended brand of grease Refer to "7. Lubrication of Bearings, 1 Grease lubrication" in the Technical Data section. ¡Recommended grease filling amount dmn value 0.65 106 15% of the capacity shown in the dimensions tables dmn value 0.65 106 12% of the capacity shown in the dimensions tables ¡Recommended grease filling method Refer to "6. Handling of Bearings, 1 Cleaning and filling with grease" in the Technical Data section.

Notes: High-strength machined brass cages are used for 5629/5620 series. Thus, if they are used for grease-lubricated vertical shafts, the cage on one side may hang onto the rolling elements, possibly causing seizure. Use of the HTA series with resin cages or oil lubrication (including feeding of lubricating oil) is recommended.

dmn value 106

Over Incl.

Oil amount Lubrication Recommended Oil per shot intervals consumption air consumption

mL

0.03

min

8 5

mL/h

0.23

NL/min

20 40

HTA9 (A) HTA0 (A) 5S-HTA0 (A) 1.0

1.0 1.2

0.36

NL/min (Normal liter/minute) ... NL means the volume of air at 0°C and 1 atmosphere.

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NTN Main Spindle Bearings

9 Angular contact ball bearings for axial loads HTA U type

HTA U type angular contact ball bearing has a higher limiting speed with the same rigidity and loading capability as the conventional HTA series.

Bearings design

Features

1 Optimized internal design to minimize the temperature rise especially at high speed range. 2 Improved molded nylon cage pocket design where the ball contacts to have higher lubrication performance under grease or air-oil lubrication.

Fig. 11.2 HTA U type

Permissible speed range

dmn value 106 0

0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8

HTA9 U HTA0 U

40°

30° 40° 30° 30° 40° 30°

Grease lubrication Air-oil lubrication

40°

5S-HTA0 U

Notes) Permissible speed of each bearing (dmn value) varies depending on the specifications of the machine for which the bearing is used (motor drive system, cooling system, and construction around the bearing). Consider the optimal choice referring to the above guideline and contact NTN.

Axial rigidity

Axial rigidity is at the same level as the conventional design.

Data/Allowable axial load

By reviewing the internal structure, the allowable axial load has improved over HTA types by about 1.3 times with the contact angle of 30° and by about 1.2 times with the contact angle of 40°.

Condition for study

Bearing HTA020UADB HTA020ADB HTA020UDB HTA020DB ( 100 150 22.5 2 row)

Condition for study

Bearing Mounted preload HTA020UADB HTA020ADB HTA020UDB HTA020DB ( 100 150 22.5 2 row) [ :30°] 880 N [ :40°] 1470 N

100

kN

Permissible axial load

80 60 40 20 0

HTA U type

71.3 53.5 31.9

HTA type

15

m

HTA U type HTA type 10

Axial displacement

25.7

30 5 40

30

40

Fig. 11.4 Comparison of permissible axial load

0 0 1 2 3 4 5

Axial load

kN

Fig. 11.3 Axial load and rigidity

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NTN Main Spindle Bearings

High speed test

dmn value of 1.0 million under grease lubrication and 1.25 million under air-oil lubrication are realized by the

optimized internal design. (Fig.11.5 11.8)

Test condition

Bearing [ :30°] HTA020UADB HTA020ADB ( 100 150 8000 min-1 880 N Grease MP-1 w/, w/o

Test condition

Bearing 22.5 2 rows) Speed Mounted preload Lubrication Oil Air Jacket cooling [ :30°] HTA020UADB HTA020ADB ( 100 150 22.5 10000 min-1 880 N Air- oil 0.03 mL/1shot Oil shot interval 5 min 40 NL/min w/, w/o

2 rows)

Speed Mounted preload Lubrication Grease type Jacket coating

40 35 30 HTA020UA w/o jacket cooling HTA020UA w/ jacket cooling HTA020A w/o jacket cooling

40 35 30 HTA020UA w/o jacket cooling HTA020UA w/ jacket cooling HTA020A w/o jacket cooling HTA020A w/ jacket cooling

OR temperature rise

OR temperature rise

25 20 15 10 5 0 0

HTA020A w/ jacket cooling

25 20 15 10 5 0 0

2000

4000

6000

-1

8000

2500

5000

7500

10000

Speed

0 0.25 0.5

min

Speed

0.75 1.0 0 0.25 0.5

min-1

0.75 1.0 1.25

dmn value

106

dmn value

106

Fig. 11.5 Comparison of temperature rise (Grease,

30°)

Fig. 11.6 Comparison of temperature rise (Air-oil,

30°)

Test condition

Bearing [ :40°] HTA020UDB HTA020DB ( 100 150 6000 min-1 1470 N Grease MP-1 w/, w/o

Test condition

Bearing 22.5 2 rows) Speed Mounted preload Lubrication Oil Air Jacket cooling [ :40°] HTA020UDB HTA020DB ( 100 150 22.5 7500 min-1 1470 N Air- oil 0.03 mL/1shot Oil shot interval 5 min 40 NL/min w/, w/o

2 rows)

Speed Mounted preload Lubrication Grease type Jacket coating

30 HTA020U w/o jacket cooling 25 HTA020U w/ jacket cooling HTA020 w/o jacket cooling 20 15 10 5 0 HTA020 w/ jacket cooling

30 HTA020U w/o jacket cooling 25 HTA020U w/ jacket cooling HTA020 w/o jacket cooling 20 15 10 5 0 HTA020 w/ jacket cooling

OR temperature rise

OR temperature rise

0

2000

4000

6000

0

2500

5000

7500

Speed

0 0.25

min

-1

Speed

0.75 0 0.25

min-1

0.5 0.75

0.5

dmn value

106

dmn value

106

Fig. 11.7 Comparison of temperature rise (Grease,

40°)

Fig. 11.8 Comparison of temperature rise (Air-oil,

40°)

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Main Spindle Bearings

!0 Dimension tables for angular contact ball bearings

Double-direction angular contact thrust ball bearings 5629 series

Contact angle 60° d 100 320mm

T1 C r1 r J d EW D

Part number

Boundary dimensions d small large size size 100 105 110 120 130 140 150 160 170 180 190 200 220 240 260 280 300 320 104 109 114 124 134 144 155 165 175 186 196 207 227 247 269 289 310 330 mm D 140 145 150 165 180 190 210 220 230 250 260 280 300 320 T1 48 48 48 54 60 60 72 72 72 84 84 96 96 96 C 24 24 24 27 30 30 36 36 36 42 42 48 48 48 60 60 rs min1 r1s min1 1.1 1.1 1.1 1.1 1.5 1.5 2 2 2 2 2 2.1 2.1 2.1 2.1 2.1 3 3 0.6 0.6 0.6 0.6 1 1 1 1 1 1 1 1.1 1.1 1.1 1.1 1.1 1.1 1.1

Basic load ratings dynamic static dynamic static kN kgf Ca 52.0 53.5 54.0 65.0 75.0 76.0 107 109 111 156 157 185 190 196 261 265 335 340 Coa 179 188 193 242 284 297 410 430 450 605 625 735 795 850 1 130 1 190 1 510 1 580 Ca 5 300 5 450 5 500 6 600 7 650 7 750 10 900 11 100 11 300 15 900 16 000 18 800 19 400 20 000 Coa 18 200 19 200 19 700 24 700 28 900 30 500 41 500 44 000 46 000 62 000 63 500 75 000 81 000 87 000

Limiting speed min grease oil lubrication lubrication 3 200 3 000 2 900 2 600 2 400 2 300 2 100 2 000 1 900 1 700 1 700 1 600 1 400 1 300 1 200 1 100 1 000 1 000 4 200 4 100 3 900 3 500 3 200 3 100 2 800 2 600 2 500 2 300 2 200 2 100 1 900 1 800 1 600 1 500 1 400 1 300

-1

Mass

(approx.)

small size 562920 562921 562922 562924 562926 562928 562930 562932 562934 562936 562938 562940 562944 562948 562952 562956 562960 562964

large size 562920M 562921M 562922M 562924M 562926M 562928M 562930M 562932M 562934M 562936M 562938M 562940M 562944M 562948M 562952M 562956M 562960M 562964M

kg small large size size 2.04 2.12 2.21 3.06 4.11 4.38 6.88 7.26 7.64 11.2 11.7 16.3 17.7 19 32.9 35 55 58.1 1.8 1.87 1.95 2.75 3.7 3.94 6.2 6.53 6.88 10 10.5 14.7 16 17 29.6 31.5 49.5 52.3

360 120 380 120

26 600 116 000 27 000 121 000 34 500 154 000 3 500 161 000

420 144 472 440 144 72

1 Minimum allowable value for corner radius dimension r or r1. 2 Maximum circumscribed circle diameter of balls.

256

Main Spindle Bearings

r1a ra Wo 4-do Db da

Dynamic equivalent axial load Pa=Fa Static equivalent axial load Poa=Fa

Dimensions of oil hole and oil groove

unit: mm

Reference dimensions mm J 126 131 136 150 163 173 190 200 210 227 237 252 272 292 328 348 384 404 Ew2 129 134 139 154.5 168 178 196.5 206.5 216.5 234 344 261 281 301 336 356 391 411

Abutment and fillet dimensions mm da Db ras r1as

min max max max

Part number

Nominal outer diameter D over 150 200 210 260 incl. 200 210 260 320

Oil groove width Wo 8 12 12 14

Oil hole

small size 562920 562921 562922 562924 562926 562928 562930 562932 562934 562936 562938 562940 562944 562948 562952 562956 562960 562964

large size 562920M 562921M 562922M 562924M 562926M 562928M 562930M 562932M 562934M 562936M 562938M 562940M 562944M 562948M 562952M 562956M 562960M 562964M

do 4 6 6 6

114 119 124 138 150 160 174 184 194 207 217 231 251 271 299 319 349 369

134.5 139.5 144.5 159.5 173.5 183.5 202 212 222 242 252 270 290 310 350 370 410 430

1 1 1 1 1.5 1.5 2 2 2 2 2 2 2 2 2 2 2.5 2.5

0.6 0.6 0.6 0.6 1 1 1 1 1 1 1 1 1 1 1 1 1 1

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Main Spindle Bearings

Double-direction angular contact thrust ball bearings 5620 series

Contact angle 60° d 25 320mm

T1 C r1 r J d EW D

Part number

Boundary dimensions d small large size size 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 120 130 140 150 160 170 180 190 200 220 240 260 280 300 320 27 32 37 42 47 52 57 62 67 73 78 83 88 93 98 104 109 114 124 134 144 155 165 175 186 196 207 227 247 269 289 310 330 mm D 47 55 62 68 75 80 90 95 100 110 115 125 130 140 145 150 160 170 180 200 210 225 240 260 280 290 310 340 360 400 420 460 480 T1 28 32 34 36 38 38 44 44 44 48 48 54 54 60 60 60 66 72 72 84 84 90 96 108 120 120 132 144 144 164 164 190 190 C 14 16 17 18 19 19 22 22 22 24 24 27 27 30 30 30 33 36 36 42 42 45 48 54 60 60 66 72 72 82 82 95 95 rs min1 r1s min1 0.6 1 1 1 1 1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.5 1.5 1.5 2 2 2 2 2 2.1 2.1 2.1 2.1 2.1 2.1 3 3 4 4 4 4 0.3 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 1 1 1 1 1 1 1 1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.5 1.5 1.5 1.5

Basic load ratings dynamic static dynamic static kN kgf Ca 13.2 14.0 19.7 23.8 26.0 26.8 37.0 37.5 39.0 47.5 49.0 57.5 58.0 67.5 68.0 68.5 78.5 96.0 98.0 139 144 147 172 202 234 236 271 335 340 405 415 475 480 Coa 28.3 32.5 48.5 58.5 69.0 74.0 99.0 103 111 140 150 178 184 216 223 229 266 315 335 460 495 525 620 735 865 890 1 030 1 270 1 350 1 710 1 810 2 170 2 230 Ca 1 350 1 420 2 010 2 430 2 650 2 730 3 800 3 850 3 950 4 850 5 000 5 850 5 950 6 850 6 950 7 000 8 000 9 750 10 000 14 200 14 600 15 000 17 600 20 600 23 900 24 100 27 700 34 000 35 000 41 500 42 500 48 500 4 900 Coa 2 890 3 350 4 950 5 950 7 000 7 550 10 100 10 500 11 300 14 300 15 300 18 200 18 800 22 000 22 700 23 400 27 100 32 500 34 500 47 000 50 500 53 500 63 000 75 000 88 000 91000 105 000 129 000 137 000 174 000 185 000 221 000 228 000

Limiting speed min grease oil lubrication lubrication 10 400 14 000 8 700 11 700 7 700 10 300 7 000 6 200 5 700 5 200 4 900 4 600 4 200 3 900 3 700 3 500 3 300 3 100 3 000 2 800 2 700 2 500 2 300 2 200 2 000 1 900 1 800 1 600 1 600 1 500 1 300 1 300 1 100 1 100 1 000 1 000 9 400 8 300 7 700 7 000 6 500 6 100 5 600 5 300 4 900 4 700 4 400 4 200 4 000 3 800 3 600 3 300 3 100 2 900 2 700 2 500 2 400 2 200 2 100 2 000 1 800 1 700 1 500 1 500

-1

Mass

(approx.)

small size 562005 562006 562007 562008 562009 562010 562011 562012 562013 562014 562015 562016 562017 562018 562019 562020 562021 562022 562024 562026 562028 562030 562032 562034 562036 562038 562040 562044 562048 562052 562056 562060 562964

large size 562005M 562006M 562007M 562008M 562009M 562010M 562011M 562012M 562013M 562014M 562015M 562016M 562017M 562018M 562019M 562020M 562021M 562022M 562024M 562026M 562028M 562030M 562032M 562034M 562036M 562038M 562040M 562044M 562048M 562052M 562056M 562060M 562964M

kg small large size size 0.197 0.177 0.301 0.28 0.394 0.35 0.482 0.44 0.605 0.54 0.638 0.59 0.988 0.9 1.06 1.08 1.53 1.61 2.2 2.31 3.05 3.18 3.32 4.19 5.35 5.73 8.58 9.1 11.2 13.6 18.5 24.7 25.5 32.7 42.8 45.8 67 71.1 0.96 1 1.4 1.5 2 2.1 2.7 2.9 3 3.7 4.9 5.2 7.6 8.1 10 11.9 16.5 21.8 23 29.7 38.5 41.2 60.3 64 91.8 97.2

1 300 102 1 300 108

1 Minimum allowable value for corner radius dimension r or r1. 2 Maximum circumscribed circle diameter of balls.

258

Main Spindle Bearings

r1a ra Wo 4-do Db da

Dynamic equivalent axial load Pa=Fa Static equivalent axial load Poa=Fa

Dimensions of oil hole and oil groove

unit: mm

Reference dimensions mm J 40 47 53 58.5 65 70 78 83 88 97 102 110 115 123 128 133 142 150 160 177 187 200 212 230 248 258 274 304 322 354 374 406 426 Ew2 41.3 48.5 55 61 67.5 72.5 81 86.1 91 100 105 113 118 127 132 137 146 155 165 182 192 206 219 236 255 265 282 310 330 364 384 418 438

Abutment and fillet dimensions mm da Db ras r1as

min max max max

Part number

Nominal outer diameter D over 150 200 210 260 incl. 200 210 260 320

Oil groove width Wo 12 12 14 16

Oil hole

small size 562005 562006 562007 562008 562009 562010 562011 562012 562013 562014 562015 562016 562017 562018 562019 562020 562021 562022 562024 562026 562028 562030 562032 562034 562036 562038 562040 562044 562048 562052 562056 562060 562964

large size 562005M 562006M 562007M 562008M 562009M 562010M 562011M 562012M 562013M 562014M 562015M 562016M 562017M 562018M 562019M 562020M 562021M 562022M 562024M 562026M 562028M 562030M 562032M 562034M 562036M 562038M 562040M 562044M 562048M 562052M 562056M 562060M 562964M

do 6 6 6 8

33 40 45.5 50 56.5 61.5 67.5 72.5 77.5 85 90 96.5 102 109 114 119 127 133 143 155 165 178 189 203 219 229 243 267 287 315 335 364 384

44 50.5 57.5 63.5 70.5 75.5 84 89 94 104 109 119 124 133.5 138.5 143.5 152 162 172 192 202 215 230 250 270 280 300 330 350 388 408 448 468

0.6 1 1 1 1 1 1 1 1 1 1 1 1 1.5 1.5 1.5 2 2 2 2 2 2 2 2 2 2 2 2.5 2.5 3 3 3 3

0.3 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1.5 1.5 1.5 1.5

259

Main Spindle Bearings

Angular contact ball bearings for axial loads (steel ball type) HTA9UA series

Contact angle 30° d 100 320mm

2B r1 r r1 r

D

d d1 D2

2a

Part number

Boundary dimensions mm d D 140 145 150 165 180 190 210 220 230 250 260 280 300 320 360 380 420 440 2B 36 36 36 rs min1 r1s min1 1.1 1.1 1.1 0.6 0.6 0.6 0.6 1 1 1 1 1 1 1 1.1 1.1 1.1 1.1 1.1 1.1 1.1

Basic load ratings dynamic static dynamic static kN kgf Ca 40.0 41.0 41.5 48.0 57.5 57.5 80.5 82.0 84.0 127 129 152 156 160 210 216 276 280 Coa 109 115 118 140 173 177 243 255 268 400 420 500 535 570 745 795 1 020 1 060 Ca 4 050 4 150 4 200 4 900 5 850 5 850 8 200 8 350 8 550 12 900 13 200 15 500 15 900 16 300 21 400 22 000 28 100 28 500 Coa 11 100 11 700 12 000 14 300 17 600 18 000 24 800 26 100 27 300 41 000 43 000 51 000 54 500 58 000 76 000 81 000 104 000 108 000

Static thrust load capacity kN kgf

Limiting speed min-1 grease oil lubrication lubrication 8 300 8 000 7 700 7 000 6 500 6 100 5 600 5 300 5 000 4 700 4 400 4 200 3 800 3 600 3 200 3 000 2 800 2 600 10 400 10 000 9 600 8 800 8 100 7 600 6 900 6 600 6 300 5 800 5 600 5 200 4 800 4 500 4 000 3 800 3 500 3 300

HTA920UADB HTA921UADB HTA922UADB HTA924UADB HTA926UADB HTA928UADB HTA930UADB HTA932UADB HTA934UADB HTA936UADB HTA938UADB HTA940UADB HTA944UADB HTA948UADB HTA952UADB HTA956UADB HTA960UADB HTA964UADB

100 105 110 120 130 140 150 160 170 180 190 200 220 240 260 280 300 320

66.0 70.0 72.0 87.5 103 106 143 151 159 239 252 305 330 350 460 490 610 635

6 750 7 150 7 350 8 900 10 500 10 800 14 600 15 400 16 200 24 400 25 700 31 000 33 500 35 500 47 000 50 000 62 000 65 000

40.5 1.1 45 45 54 54 54 63 63 72 72 72 90 90 108 108 1.5 1.5 2 2 2 2 2 2.1 2.1 2.1 2.1 2.1 3 3

1 Minimum allowable value for corner radius dimension r or r1.

260

Main Spindle Bearings

r1as ras

da Db

Dynamic equivalent axial load Pa=Fa Static equivalent axial load Poa=Fa

Load center mm 2a 87.6 90.5 93.4 102.9 112.4 118.1 131.4 137.1 142.9 156.2 162.0 175.2 186.7 198.3 224.7 236.3 262.7 274.2

Internal free space cm3 Two row

(approx.)

Mass kg Two row

(approx.)

Reference dimensions

Abutment and fillet dimensions mm da Db

max

Part number

d1 115.3 120.3 125.3 137.4 149.4 159.4 173.1 183.1 193.1 206.4 216.4 230.6 250.6 270.6 298.9 318.9 347.1 367.1

D2 129.1 134.1 139.1 152.4 165.8 175.8 193.3 203.3 213.0 231.4 241.0 258.2 278.0 297.9 331.6 351.5 385.2 405.1

min

ras max 1 1 1 1 1.5 1.5 2 2 2 2 2 2 2 2 2 2 2.5 2.5

r1as

max

24 24 26 36 50 53 85 90 94 138 144 197 213 229 378 403 675 715

0.81 0.85 0.88 1.23 1.65 1.75 2.74 2.89 3.05 4.78 5.00 7.00 7.60 8.15 14.3 15.2 23.5 24.8

110 115 120 130 142 152 164 174 184 194 204 217 237 257 277 297 320 340

134 139 144 159 172.5 182.5 202.5 212.5 222.5 242.5 252.5 270 290 310 350 370 410 430

0.6 0.6 0.6 0.6 1 1 1 1 1 1 1 1 1 1 1 1 1 1

HTA920UADB HTA921UADB HTA922UADB HTA924UADB HTA926UADB HTA928UADB HTA930UADB HTA932UADB HTA934UADB HTA936UADB HTA938UADB HTA940UADB HTA944UADB HTA948UADB HTA952UADB HTA956UADB HTA960UADB HTA964UADB

261

Main Spindle Bearings

Angular contact ball bearings for axial loads (steel ball type) HTA9U series

Contact angle 40° d 100 320mm

2B r1 r r1 r

D

d d1 D2

2a

Part number

Boundary dimensions mm d D 140 145 150 165 180 190 210 220 230 250 260 280 300 320 360 380 420 440 2B 36 36 36 rs min1 r1s min1 1.1 1.1 1.1 0.6 0.6 0.6 0.6 1 1 1 1 1 1 1 1.1 1.1 1.1 1.1 1.1 1.1 1.1

Basic load ratings dynamic static dynamic static kN kgf Ca 47.0 48.5 49.0 57.0 68.0 68.0 95.5 97.5 99.5 150 153 180 185 190 250 257 325 330 Coa 121 128 131 156 193 197 270 284 298 445 470 555 595 635 830 885 1 130 1 180 Ca 4 800 4 950 5 000 5 800 6 950 6 950 9 750 9 950 10 100 15 300 15 600 18 400 18 900 19 400 25 400 26 200 33 500 34 000 Coa 12 300 13 000 13 400 15 900 19 600 20 100 27 600 29 000 30 500 45 500 48 000 56 500 60 500 64 500 84 500 90 500 115 000 120 000

Static thrust load capacity kN kgf

Limiting speed min-1 grease oil lubrication lubrication 6 300 6 000 5 800 5 300 4 800 4 500 4 200 3 900 3 800 3 500 3 300 3 100 2 900 2 700 2 400 2 300 2 100 2 000 7 900 7 600 7 300 6 700 6 100 5 800 5 300 5 000 4 800 4 400 4 200 4 000 3 700 3 400 3 100 2 900 2 600 2 500

HTA920UDB HTA921UDB HTA922UDB HTA924UDB HTA926UDB HTA928UDB HTA930UDB HTA932UDB HTA934UDB HTA936UDB HTA938UDB HTA940UDB HTA944UDB HTA948UDB HTA952UDB HTA956UDB HTA960UDB HTA964UDB

100 105 110 120 130 140 150 160 170 180 190 200 220 240 260 280 300 320

29.3 31.0 32.0 39.0 44.5 46.0 62.5 65.5 69.0 104 110 134 145 155 203 218 266 279

2 990 3 150 3 250 4 000 4 550 4 700 6 350 6 700 7 050 10 600 11 200 13 700 14 800 15 800 20 700 22 200 27 100 28 400

40.5 1.1 45 45 54 54 54 63 63 72 72 72 90 90 108 108 1.5 1.5 2 2 2 2 2 2.1 2.1 2.1 2.1 2.1 3 3

1 Minimum allowable value for corner radius dimension r or r1.

262

Main Spindle Bearings

r1as ras

da Db

Dynamic equivalent axial load Pa=Fa Static equivalent axial load Poa=Fa

Load center mm 2a 119.1 123.3 127.5 140.3 153.1 161.5 178.7 187.1 195.5 212.7 221.1 238.3 255.1 271.8 306.2 323.0 357.3 374.1

Internal free space cm3 Two row

(approx.)

Mass kg Two row

(approx.)

Reference dimensions

Abutment and fillet dimensions mm da Db

max

Part number

d1 115.3 120.3 125.3 137.4 149.4 159.4 173.1 183.1 193.1 206.4 216.4 230.6 250.6 270.6 298.9 318.9 347.1 367.1

D2 129.0 134.0 139.0 152.3 165.7 175.7 193.2 203.2 212.9 231.5 241.2 258.0 277.8 297.8 331.4 350.2 385.0 404.1

min

ras max 1 1 1 1 1.5 1.5 2 2 2 2 2 2 2 2 2 2 2.5 2.5

r1as

max

24 24 26 36 50 53 85 90 94 138 144 197 213 229 378 403 675 715

0.81 0.85 0.88 1.23 1.65 1.75 2.74 2.89 3.05 4.78 5.00 7.00 7.60 8.15 14.3 15.2 23.5 24.8

110 115 120 130 142 152 164 174 184 194 204 217 237 257 277 297 320 340

134 139 144 159 172.5 182.5 202.5 212.5 222.5 242.5 252.5 270 290 310 350 370 410 430

0.6 0.6 0.6 0.6 1 1 1 1 1 1 1 1 1 1 1 1 1 1

HTA920UDB HTA921UDB HTA922UDB HTA924UDB HTA926UDB HTA928UDB HTA930UDB HTA932UDB HTA934UDB HTA936UDB HTA938UDB HTA940UDB HTA944UDB HTA948UDB HTA952UDB HTA956UDB HTA960UDB HTA964UDB

263

Main Spindle Bearings

Angular contact ball bearings for axial loads (steel ball type) HTA0UA series

Contact angle 30° d 50 320mm

2B r1 r r1 r

D

d d1 D2

2a

Part number

Boundary dimensions mm d D 80 90 95 100 110 115 125 130 140 145 150 160 170 180 200 210 225 240 260 280 290 310 340 360 400 420 460 480 2B 28.5 33 33 33 36 36 40.5 40.5 45 45 45 49.5 54 54 63 63 67.5 72 81 90 91 99 108 108 123 123 142.5 142.5 rs min1 r1s min1 1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.5 1.5 1.5 2 2 2 2 2 2.1 2.1 2.1 2.1 2.1 2.1 3 3 4 4 4 4 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 1 1 1 1 1 1 1 1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.5 1.5 1.5 1.5

Basic load ratings dynamic static dynamic static kN kgf Ca 24.7 26.8 28.1 28.5 35.0 37.0 42.5 43.0 50.0 50.5 52.5 60.0 74.5 75.0 108 111 114 134 153 177 179 201 253 261 310 315 360 365 Coa 48.5 57.5 63.0 65.0 82.0 91.5 105 108 127 131 140 163 200 206 293 315 330 390 450 530 545 610 775 825 1040 1110 1330 1360 Ca 2 520 2 730 2 860 2 900 3 550 3 800 4 350 4 400 5 100 5 150 5 350 6 100 7 600 7 650 11 000 11 300 11 700 13 700 15 900 18 100 18 300 20 500 25 800 26 600 31 500 32 500 37 000 37 000 Coa 4 950 5 850 6 400 6 650 8 350 9 300 10 700 11 100 13 000 13 400 14 300 16 600 20 400 21 000 29 900 32 000 34 000 40 000 46 000 54 000 55 500 62 000 79 000 84 000 106 000 113 000 135 000 139 000

Static thrust load capacity kN kgf

Limiting speed min-1 grease oil lubrication lubrication 15 400 13 800 12 900 12 100 11 100 10 500 9 800 9 300 8 700 8 300 8 000 7 500 7 100 6 700 6 100 5 700 5 300 5 000 4 700 4 300 4 200 3 900 3 600 3 300 3 000 2 900 2 600 2 500 19 200 17 200 16 100 15 200 13 900 13 200 12 200 11 600 10 900 10 400 10 000 9 400 8 900 8 300 7 600 7 100 6 700 6 300 5 800 5 400 5 200 4 900 4 500 4 200 3 800 3 600 3 300 3 100

HTA010UADB HTA011UADB HTA012UADB HTA013UADB HTA014UADB HTA015UADB HTA016UADB HTA017UADB HTA018UADB HTA019UADB HTA020UADB HTA021UADB HTA022UADB HTA024UADB HTA026UADB HTA028UADB HTA030UADB HTA032UADB HTA034UADB HTA036UADB HTA038UADB HTA040UADB HTA044UADB HTA048UADB HTA052UADB HTA056UADB HTA060UADB HTA064UADB

50 55 60 65 70 75 80 85 90 95 100 105 110 120 130 140 150 160 170 180 190 200 220 240 260 280 300 320

23.2 27.7 30.5 32.0 40.0 45.5 52.0 54.5 63.5 66.0 71.0 82.5 100 104 144 156 169 196 226 265 275 310 385 415 520 565 670 700

2 370 2 820 3 100 3 250 4 100 4 650 5 300 5 550 6 500 6 750 7 250 8 400 10 200 10 600 14 700 15 900 17 200 20 000 23 000 27 000 28 000 31 500 39 500 42 500 53 500 57 500 68 500 71 500

1 Minimum allowable value for corner radius dimension r or r1.

264

Main Spindle Bearings

r1as ras

da Db

Dynamic equivalent axial load Pa=Fa Static equivalent axial load Poa=Fa

Load center mm 2a 52.1 58.6 61.5 64.4 70.3 73.2 79.8 82.7 89.3 92.1 95.1 101.6 108.3 114.1 127.3 133.1 142.6 152.1 165.3 178.5 184.3 197.5 216.6 228.1 253.0 264.6 291.8 303.3

Internal free space cm3 Two row 9 13 13 14 18 19 26 28 38 39 39 49 66 67 108 114 141 168 238 285 300 436 550 650 850 900 1265 1340

Mass kg Two row

Reference dimensions

Abutment and fillet dimensions mm da Db

max

Part number

d1 0.24 0.39 0.41 0.44 0.61 0.65 0.88 0.93 1.22 1.27 1.34 1.74 2.14 2.32 3.39 3.60 4.46 5.40 7.20 10.6 11.0 13.8 18.1 18.9 28.4 30.2 43.6 45.8 60.7 68.2 73.2 78.2 85.3 90.3 97.4 102.4 109.4 114.4 119.5 126.5 133.1 143.3 156.4 166.4 178.9 190.6 204.7 218.9 228.9 243.0 266.3 286.3 314.6 334.6 362.9 382.9

D2 73.2 80.8 85.8 90.8 99.1 104.1 112.5 117.5 125.9 130.9 136.0 144.3 153.4 163.5 181.7 191.7 204.3 218.0 235.3 251.8 261.8 277.6 306.0 326.8 360.3 380.2 413.9 433.9

min

ras max 1 1 1 1 1 1 1 1 1.5 1.5 1.5 2 2 2 2 2 2 2 2 2 2 2 2.5 2.5 3 3 3 3

r1as

max

57.5 65.0 70.0 75.0 80.0 85.0 90.0 95.0 102 107 112 119 124 134 144 154 167 177 187 197 207 217 240 260 283 303 323 343

74.0 84.0 89.0 94.0 104 109 119 124 132.5 137.5 142.5 152.5 162.5 172.5 192.5 202.5 215 230 250 270 280 300 330 350 388 408 448 468

0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1.5 1.5 1.5 1.5

HTA010UADB HTA011UADB HTA012UADB HTA013UADB HTA014UADB HTA015UADB HTA016UADB HTA017UADB HTA018UADB HTA019UADB HTA020UADB HTA021UADB HTA022UADB HTA024UADB HTA026UADB HTA028UADB HTA030UADB HTA032UADB HTA034UADB HTA036UADB HTA038UADB HTA040UADB HTA044UADB HTA048UADB HTA052UADB HTA056UADB HTA060UADB HTA064UADB

265

Main Spindle Bearings

Angular contact ball bearings for axial loads (steel ball type) HTA0U series

Contact angle 40° d 50 320mm

2B r1 r r1 r

D

d d1 D2

2a

Part number

Boundary dimensions mm d D 80 90 95 100 110 115 125 130 140 145 150 160 170 180 200 210 225 240 260 280 290 310 340 360 400 420 460 480 2B 28.5 33 33 33 36 36 40.5 40.5 45 45 45 49.5 54 54 63 63 67.5 72 81 90 91 99 108 108 123 123 142.5 142.5 rs min1 r1s min1 1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.5 1.5 1.5 2 2 2 2 2 2.1 2.1 2.1 2.1 2.1 2.1 3 3 4 4 4 4 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 1 1 1 1 1 1 1 1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.5 1.5 1.5 1.5

Basic load ratings dynamic static dynamic static kN kgf Ca 29.6 32.0 33.5 34.0 41.5 Coa 55.5 64.0 69.5 72.0 91.0 Ca 3 000 3 250 3 400 3 450 4 250 4 500 5 150 5 200 6 050 6 100 6 350 7 250 9 000 9 050 13 000 13 500 13 800 16 200 18 600 21 500 21 800 24 400 30 500 31 500 37 500 38 500 44 000 44 000 Coa 5 650 6 500 7 100 7 350 9 300 10 300 11 900 12 300 14 400 14 900 15 900 18 400 22 700 23 300 33 000 35 500 37 500 44 000 51 000 60 000 61 500 69 000 87 500 93 000 118 000 125 000 150 000 155 000

Static thrust load capacity kN kgf

Limiting speed min-1 grease oil lubrication lubrication 11 500 10 300 9 700 9 100 8 300 7 900 7 300 7 000 6 500 6 300 6 000 5 700 5 400 5 000 4 500 4 300 4 000 3 800 3 500 3 300 3 100 2 900 2 700 2 500 2 300 2 100 2 000 1 900 14 600 13 100 12 300 11 500 10 600 10 000 9 300 8 800 8 300 7 900 7 600 7 200 6 800 6 300 5 800 5 400 5 200 4 800 4 400 4 100 4 000 3 700 3 400 3 200 2 900 2 700 2 500 2 400

HTA010UDB HTA011UDB HTA012UDB HTA013UDB HTA014UDB HTA015UDB HTA016UDB HTA017UDB HTA018UDB HTA019UDB HTA020UDB HTA021UDB HTA022UDB HTA024UDB HTA026UDB HTA028UDB HTA030UDB HTA032UDB HTA034UDB HTA036UDB HTA038UDB HTA040UDB HTA044UDB HTA048UDB HTA052UDB HTA056UDB HTA060UDB HTA064UDB

50 55 60 65 70 75 80 85 90 95 100 105 110 120 130 140 150 160 170 180 190 200 220 240 260 280 300 320

12.3 14.3 15.7 16.4 21.5 24.0 28.4 29.4 32.0 33.5 35.5 42.5 50.0 52.0 74.0 79.5 85.0 103 116 140 145 159 201 216 275 293 355 365

1 250 1 460 1 600 1 670 2 190 2 450 2 900 3 000 3 250 3 400 3 600 4 350 5 100 5 300 7 550 8 100 8 650 10 500 11 800 14 300 14 800 16 200 20 500 22 000 28 000 29 900 36 000 37 000

44.0 101.0 50.5 51.0 59.5 60.0 62.0 71.0 88.5 89.0 128 132 136 159 182 211 214 240 300 310 365 375 430 435 117 120 141 146 156 181 222 228 325 345 370 435 500 585 605 680 860 915 1160 1230 1470 1520

1 Minimum allowable value for corner radius dimension r or r1.

266

Main Spindle Bearings

r1as ras

da Db

Dynamic equivalent axial load Pa=Fa Static equivalent axial load Poa=Fa

Load center mm 2a 69.2 77.7 81.9 86.1 94.0 98.2 106.7 110.9 119.5 123.7 128.0 136.5 145.1 153.6 170.8 179.2 191.9 204.7 221.9 239.1 247.4 264.6 290.3 307.0 339.9 356.7 391.7 408.5

Internal free space cm3 Two row

(approx.)

Mass kg Two row

(approx.)

Reference dimensions

Abutment and fillet dimensions mm da Db

max

Part number

d1 60.7 68.2 73.2 78.2 85.3 90.3 97.4 102.4 109.4 114.4 119.5 126.5 133.1 143.3 156.4 166.4 178.9 190.6 204.7 218.9 228.9 243.0 266.3 286.3 314.6 334.6 362.9 382.9

D2 73.1 80.7 85.7 90.7 99.0 104.0 112.4 117.4 125.8 130.8 135.9 144.2 153.3 163.4 181.6 191.6 204.2 218.4 235.2 251.0 261.7 277.6 306.6 326.6 360.1 380.0 413.7 433.7

min

ras max 1 1 1 1 1 1 1 1 1.5 1.5 1.5 2 2 2 2 2 2 2 2 2 2 2 2.5 2.5 3 3 3 3

r1as

max

9 13 13 14 18 19 26 28 38 39 39 49 66 67 108 114 141 168 238 285 300 436 550 650 850 900 1265 1340

0.24 0.39 0.41 0.44 0.61 0.65 0.88 0.93 1.22 1.27 1.34 1.74 2.14 2.32 3.39 3.60 4.46 5.40 7.20 10.6 11.0 13.8 18.1 18.9 28.4 30.2 43.6 45.8

57.5 65.0 70.0 75.0 80.0 85.0 90.0 95.0 102 107 112 119 124 134 144 154 167 177 187 197 207 217 240 260 283 303 323 343

74.0 84.0 89.0 94.0 104 109 119 124 132.5 137.5 142.5 152.5 162.5 172.5 192.5 202.5 215 230 250 270 280 300 330 350 388 408 448 468

0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1.5 1.5 1.5 1.5

HTA010UDB HTA011UDB HTA012UDB HTA013UDB HTA014UDB HTA015UDB HTA016UDB HTA017UDB HTA018UDB HTA019UDB HTA020UDB HTA021UDB HTA022UDB HTA024UDB HTA026UDB HTA028UDB HTA030UDB HTA032UDB HTA034UDB HTA036UDB HTA038UDB HTA040UDB HTA044UDB HTA048UDB HTA052UDB HTA056UDB HTA060UDB HTA064UDB

267

Main Spindle Bearings

Angular contact ball bearings for axial loads (ceramic ball type) 5S-HTA0UA series

Contact angle 30° d 50 130mm

2B r1 r r1 r

D

d d1 D2

2a

Part number

Boundary dimensions mm d D 80 90 95 100 110 115 125 130 140 145 150 160 170 180 200 2B rs min1 r1s min1 28.5 33 33 33 36 36 40.5 40.5 45 45 45 49.5 54 54 63 1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.5 1.5 1.5 2 2 2 2 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 1 1 1 1 1 1 1

Basic load ratings dynamic static dynamic static kN kgf Ca 24.7 26.8 28.1 28.5 35.0 37.0 42.5 43.0 49.5 50.5 52.5 60.0 74.0 75.0 108 Coa 33.5 40.0 43.5 45.0 57.0 63.5 73.0 75.0 88.5 91.0 97.0 113 139 143 203 Ca 2 520 2 730 2 860 2 900 3 550 3 800 4 350 4 400 5 050 5 150 5 350 6 100 7 550 7 650 11 000 Coa 3 400 4 050 4 450 4 600 5 800 6 450 7 400 7 650 9 000 9 300 9 900 11 500 14 100 14 500 20 700

Static thrust load capacity kN kgf

Limiting speed min-1 grease oil lubrication lubrication 17 300 15 500 14 500 13 600 12 500 11 800 11 000 10 500 9 800 9 400 9 000 8 500 8 000 7 500 6 800 22 200 19 900 18 600 17 500 16 000 15 200 14 100 13 400 12 500 12 000 11 500 10 900 10 300 9 600 8 700

5S-HTA010UADB 5S-HTA011UADB 5S-HTA012UADB 5S-HTA013UADB 5S-HTA014UADB 5S-HTA015UADB 5S-HTA016UADB 5S-HTA017UADB 5S-HTA018UADB 5S-HTA019UADB

50 55 60 65 70 75 80 85 90 95

15.7 18.6 20.5 21.6 27.2 30.5 35.0 36.5 43.0 44.5 48.0 55.5 67.0 70.0 97.0

1 600 1 900 2 090 2 200 2 770 3 150 3 600 3 750 4 400 4 550 4 900 5 650 6 850 7 150 9 900

5S-HTA020UADB 100 5S-HTA021UADB 105 5S-HTA022UADB 110 5S-HTA024UADB 120 5S-HTA026UADB 130

1 Minimum allowable value for corner radius dimension r or r1.

268

Main Spindle Bearings

r1as ras

da Db

Dynamic equivalent axial load Pa=Fa Static equivalent axial load Poa=Fa

Load center mm 2a 52.1 58.6 61.5 64.4 70.3 73.2 79.8 82.7 89.3 92.1 95.1 101.6 108.3 114.1 127.3

Internal free space cm3 Two row

(approx.)

Mass kg Two row

(approx.)

Reference dimensions

Abutment and fillet dimensions mm da Db

max

Part number

d1 60.7 68.2 73.2 78.2 85.3 90.3 97.4 102.4 109.4 114.4 119.5 126.5 133.1 143.3 156.4

D2 73.2 80.8 85.8 90.8 99.1 104.1 112.5 117.5 125.9 130.9 136.0 144.3 153.4 163.5 181.7

min

ras max 1 1 1 1 1 1 1 1 1.5 1.5 1.5 2 2 2 2

r1as

max

9 13 13 14 18 19 26 28 38 39 39 49 66 67 108

0.22 0.36 0.39 0.41 0.57 0.60 0.83 0.87 1.15 1.20 1.26 1.64 2.00 2.17 3.13

57.5 65.0 70.0 75.0 80.0 85.0 90.0 95.0 102 107 112 119 124 134 144

74.0 84.0 89.0 94.0 104 109 119 124 132.5 137.5 142.5 152.5 162.5 172.5 192.5

0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 1 1 1 1 1 1 1

5S-HTA010UADB 5S-HTA011UADB 5S-HTA012UADB 5S-HTA013UADB 5S-HTA014UADB 5S-HTA015UADB 5S-HTA016UADB 5S-HTA017UADB 5S-HTA018UADB 5S-HTA019UADB 5S-HTA020UADB 5S-HTA021UADB 5S-HTA022UADB 5S-HTA024UADB 5S-HTA026UADB

269

Main Spindle Bearings

Angular contact ball bearings for axial loads (ceramic ball type) 5S-HTA0U series

Contact angle 40° d 50 130mm

2B r1 r r1 r

D

d d1 D2

2a

Part number

Boundary dimensions mm d D 80 90 95 100 110 115 125 130 140 145 150 160 170 180 200 2B rs min1 r1s min1 28.5 33 33 33 36 36 40.5 40.5 45 45 45 49.5 54 54 63 1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.5 1.5 1.5 2 2 2 2 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 1 1 1 1 1 1 1

Basic load ratings dynamic static dynamic static kN kgf Ca 29.6 32.0 33.5 34.0 41.5 44.0 50.5 51.0 59.5 60.0 62.0 71.0 88.5 89.0 128 Coa 38.5 44.5 48.0 50.0 63.0 70.5 81.0 83.5 98.0 101 108 125 154 158 225 Ca 3 000 3 250 3 400 3 450 4 250 4 500 5 150 5 200 6 050 6 100 6 350 7 250 9 000 9 050 13 000 Coa 3 900 4 500 4 900 5 100 6 450 7 150 8 250 8 500 10 000 10 300 11 000 12 800 15 700 16 100 23 000

Static thrust load capacity kN kgf

Limiting speed min-1 grease oil lubrication lubrication 12 200 10 900 10 200 9 600 8 800 8 300 7 700 7 300 6 900 6 600 6 300 6 000 5 600 5 300 4 800 15 400 13 800 12 900 12 100 11 100 10 500 9 800 9 300 8 700 8 300 8 000 7 500 7 100 6 700 6 100

5S-HTA010UDB 5S-HTA011UDB 5S-HTA012UDB 5S-HTA013UDB 5S-HTA014UDB 5S-HTA015UDB 5S-HTA016UDB 5S-HTA017UDB 5S-HTA018UDB 5S-HTA019UDB 5S-HTA020UDB 5S-HTA021UDB 5S-HTA022UDB 5S-HTA024UDB 5S-HTA026UDB

50 55 60 65 70 75 80 85 90 95 100 105 110 120 130

14.6 17.1 18.7 19.6 25.6 28.7 34.0 35.0 38.0 39.5 42.5 50.5 59.5 61.5 88.0

1 490 1 740 1 910 2 000 2 610 2 930 3 450 3 600 3 900 4 050 4 300 5 150 6 100 6 300 9 000

1 Minimum allowable value for corner radius dimension r or r1.

270

Main Spindle Bearings

r1as ras

da Db

Dynamic equivalent axial load Pa=Fa Static equivalent axial load Poa=Fa

Load center mm 2a 69.2 77.7 81.9 86.1 94.0 98.2 106.7 110.9 119.5 123.7 128.0 136.5 145.1 153.6 170.8

Internal free space cm3 Two row

(approx.)

Mass kg Two row

(approx.)

Reference dimensions

Abutment and fillet dimensions mm da Db

max

Part number

d1 60.7 68.2 73.2 78.2 85.3 90.3 97.4 102.4 109.4 114.4 119.5 126.5 133.1 143.3 156.4

D2 73.1 80.7 85.7 90.7 99.0 104.0 112.4 117.4 125.8 130.8 135.9 144.2 153.3 163.4 181.6

min

ras max 1 1 1 1 1 1 1 1 1.5 1.5 1.5 2 2 2 2

r1as

max

9 13 13 14 18 19 26 28 38 39 39 49 66 67 108

0.22 0.36 0.39 0.41 0.57 0.60 0.83 0.87 1.15 1.20 1.26 1.64 2.00 2.17 3.13

57.5 65.0 70.0 75.0 80.0 85.0 90.0 95.0 102 107 112 119 124 134 144

74.0 84.0 89.0 94.0 104 109 119 124 132.5 137.5 142.5 152.5 162.5 172.5 192.5

0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 1 1 1 1 1 1 1

5S-HTA010UDB 5S-HTA011UDB 5S-HTA012UDB 5S-HTA013UDB 5S-HTA014UDB 5S-HTA015UDB 5S-HTA016UDB 5S-HTA017UDB 5S-HTA018UDB 5S-HTA019UDB 5S-HTA020UDB 5S-HTA021UDB 5S-HTA022UDB 5S-HTA024UDB 5S-HTA026UDB

271

Information

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