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ContiTech Power Transmission Systems

The new generation: CONTI SYNCHRODRIVE PU Flat Belts lightweight and reliable ­ compact and strong

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ContiTech Division of Continental AG



CONTI SYNCHRODRIVE PU Flat Belts enable drive designs of surprising compactness with high strength and bending flexibility

Modern drive technology combines dynamics, precision and in-service reliability at great economy. To further this, we provide a wide range of drive elements made of rubber and polyurethane as well as complete drive solutions. As a development partner and original equipment manufacturer for numerous industries, we know the needs of the markets. Our products regularly give new technological perspectives to both users and designers. CONTI SYNCHRODRIVE PU Flat Belts enable drive designs of high reliability and economy.

Innovative in material and design Thanks to its greater flexibility and traction, the CONTI SYNCHRODRIVE PU Flat Belt enables compact drives with much smaller pulley diameters in comparison to conventional drives with steel cords. Smaller drive pulleys allow the use of space-saving drive motors and secondary engineering. Compact drive configurations with low inertia reduce not only the manufacturing costs but also the power consumption.

The steel-reinforced belts made of modified polyurethane are extremely flexible, hard-wearing and durable. They are virtually corrosion-proof due to their galvanised steel, and their polyurethane coating ensures anti-slip traction and efficient power transmission. Used in combination with crowned pulleys they ensure excellent power transmission and very smooth running. The CONTI SYNCHRODRIVE PU Flat Belt received the "iF Ecology Design Award 2001" in gold and the "iF Product Design award 2001" in silver.

Conventional steel cord 8 strands per cord 19 steel wires per strand altogether 152 steel wires

PU belt reinforced with steel cord, type XHP 12 steel cords per belt 7 strands per steel cord 7 single wires per strand altogether 588 single wires

strand steel wire

steel cord strand single wire Each PU belt contains more steel wires than a conventional steel cable. They have the same tensile strength although they weigh less.




Outside material:

s Polyurethane with 92 Shore A s Hard-wearing and durable s Unaffected by environmental influences


Tension member:

s Compact steel cable strand design s s s s s

h Belt design

The outside of the CONTI SYNCHRODRIVE PU Flat Belt consists of polyurethane; the tension member takes the form of a strand design. The two opposing directions of lay of the steel cords with their strands ensure neutral in-service properties. The result: quiet and smooth running

Types: XHP ­ extra high tensile strength HS ­ very high strength HP ­ reinforced HP-Niro ­ stainless steel HF ­ flexible

Selection of belts and pulleys

Fzul in N for each 10 mm belt width 3750 3250 2750 HS 2250 HP 1750 1250 HF 750 250 25 XHP

Cable Ø h 1.6 3

Width b* [mm] 30/60

1.2 0.9

2.5 2.3 2.3 2.1

10/15/20/25/30/40/50/55/85/100 10/15/20/25/30/40/50/55/85/100 10/15/20/25/30/40/50/55/85/100 10/15/20/25/30/40/50/55/85/100

HP-NIRO 0.9 0.6






175 200 225 250 Pulley diameter in mm

Fzul as a function of the pulley diameter (normalised for 10 mm belt width)

The belt is selected on the basis of the circumferential force to be transmitted for the pulley size concerned. s Breaking strength of the belt approx. 3 x Fzul (max) s Thickness tolerance ± 0.3 mm** s Width tolerance ± 0.5 mm** *further dimensions on request **special tolerances on request

Design of the pulleys

Extra height of crown top a a 2.6 2.4 2.2 2 1.8 B=b*1.2 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 10 20 30 1.0° 0.9° 0.8° b B 0.7° 0.6° 0.5° 0.4° 0.3° 0.2° 0.1° 40 50 60 70 80 90 100 110 120 130 140 150 Belt width b

Zur Unterstützung des Geradlaufs der Riemen können die Treibscheiben/Umlenkscheiben wie folgt ausgeführt sein: s zylindrisch mit Bordscheiben s konvex mit/ohne Bordscheiben Entsprechend der Größe der Balligkeit muss dabei die Schrägstellung der Welle überprüft werden.

Maximum permissible inclination of the shaft as a function of extra height of crowned pulleys

CONTI SYNCHRODRIVE PU Flat Belts M30-F20 HP M30 __ F __ 20 __ HP __ length 30 m flat belt belt width 20 mm reinforced type

Designation when ordering

The properties of the CONTI SYNCHRODRIVE PU Flat Belt open up many new areas of application, e.g. in lifting systems, car wash installations, forklifts, handling devices and scissors-type lifting tables.



x 103

x 103 x 103 x 103 x 103

Test results: CONTI SYNCHRODRIVE PU Flat Belt, type XHP The service life of the steel cord-reinforced CONTI SYNCHRODRIVE PU Flat Belt, type XHP is three times as long as that of belts with conventional steel cables under the same operating conditions. Endurance testing verified there is only a slight reduction in the strength values after several million load cycles. The traction testing on the cycle duration similarly demonstrated the wear resistance of the system.

Steel Cord, Type XHP

ContiTech Specialist in rubber and plastics technology

The reliability of the CONTI SYNCHRODRIVE Flat Belt, type XHP is attained thanks to the use of numerous high-strength wires. The steel cords (diameter 1.67 mm) and their parallel-to-edge alignment increase the flexibility in comparison to the steel cable. In this way the bearing face of the flat belt is made wider and the pulley can be more easily driven. So the diameter of the pulley can be reduced to 100 mm. The design of wire/strand/cord in combination with the ultramodern manufacturing process enables an optimum spreading of the polyurethane which hence completely surrounds the cables. This aspect in turn keeps the wires in place within a braid and bonds the individual braids together. The result: ­ small bending radius ­ high strength ­ low corrosion

The horizontal alignment of the steel cords gives the belt its flat shape.

Benefits of the new design:

s s s s s s s

Greater flexibility and traction Pulley can be driven more easily Smaller pulley diameter Less belt stretching under load Good running properties regarding noise and vibrations Maintenance-free and space-saving drive element High resistance to external influences (e.g. weathering, wear, UV radiation)

The ContiTech Division is a development partner and an original equipment supplier to many industries, and it provides high-grade functional parts, components and systems. With their know-how in rubber and plastics technology, the eight business units make a contribution to safe and comfortable mobility. This is what the ContiTech brand is all about.

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ContiTech Specialist in rubber and plastics technology

Power transmision technology worldwide ContiTech Antriebssysteme GmbH D-30004 Hannover ContiTech Power Transmission Systems Ltd. CERT GB - Wigan, WN2 4WZ ContiTech - INA GmbH & Co. KG Belt Drive Systems D-91072 Herzogenaurach CERT ContiTech Mexicana S.A. de C.V. ContiTech Power Transmission Products MEX-C.P. 78090 San Luis Potosi, S.L.P.

Product range V-Belts: CONTI FO-Z Heavy-Duty Cogged Raw Edge V-Belts CONTI ULTRAFLEX Narrow-Section Wrapped V-Belts CONTI MULTIFLEX Classical-Section Wrapped V-Belts CONTI VARIDUR-Z Variable Speed Cogged Raw Edge V-Belts CONTI VARIFLEX-Z Variable Speed Cogged Raw Edge V-Belts CONTI AGRIDUR Variable Speed Cogged Raw Edge V-Belts CONTI SCOOTER XT Heavy-Duty Cogged Raw Edge V-Belts Multiple V-Ribbed Belts:

ContiTech service worldwide Belgium ContiTech Belux Industriepark Molenberglei 24 B-2627 Schelle Phone (03) 8 80 71 40 Fax (03) 8 80 71 41 China ContiTech Holding GmbH Shanghai Office Rm. 906B Block C Orient International Plaza No. 85 Lou Shan Guan Lu PRC-200335 Shanghai Phone (021) 62 78 77 38 Fax (021) 62 78 77 40 France ContiTech France SNC 3, rue Fulgence Bienvenue CE 147 F-92631 Gennevilliers Phone (1) Fax (1) Z.I. de la Silardiére F-42500 Le Chambon Feugerolles Phone (4) Fax (4) Singapore Continental Tyre and Rubber (S) Ltd. 298 Tiong Bahru Road #02-01 Tower Block Tiong Bahru Plaza SGP-Singapore 168730 Phone 377 1223 Fax 377 2202 Spain Continental Industrias del Caucho S.A. ContiTech Cityparc-Ronda de Dalt Ctra. de Hospitalet 147 E-08940 Cornellà (Barcelona) Phone (93) 480 04 00 Fax (93) 480 04 01 Switzerland ContiTech Continental Suisse S.A. Vogelsangstrasse 28 CH-8307 Effretikon Phone (0 52) 343 70 21 Fax (0 52) 343 28 19 USA ContiTech North America, Inc. 136, Summit Avenue USA-Montvale, NJ 07645 Phone (201) 930-0600 Fax (201) 930-0050 Michigan office Phone (248) 393-5292 Fax (248) 393-6498

CERTAutomotivos Ltda. Produtos

BRA-84043-450 Ponta Grossa-Pr

Continental do Brasil



VDA 6.1 04 100 7007

Certification in ContiTech Power Transmission Systems Business Unit



QS - 9000 04 100 7007

CONTI-V MULTIRIB Multiple V-Ribbed Belts Timing Belts: CONTI SYNCHROFORCE CXP/CXA Heavy Duty Timing Belts CONTI SYNCHROBELT HTD High Torque Drive Timing Belts CONTI SYNCHROBELT STD Super Torque Drive Timing Belts CONTI SYNCHROBELT Trapezoidal Timing Belts CONTI SYNCHROBELT and CONTI SYNCHROFORCE CXP Double-Sided Timing Belts CONTI SYNCHRODRIVE Open-Ended Timing Belts CONTI SYNCHROCOLOR Timing Belts Flat Belts: CONTI SYNCHRODRIVE Open-Ended Flat Belts


EN ISO 9001 04 100 5264

ContiTech Antriebssysteme GmbH Continentalstraße 1, D-29451 Dannenberg Phone +49 (0) 58 61 / 806-0 Fax +49 (0) 58 61 / 806-302 E-Mail: [email protected] ContiTech Antriebssysteme GmbH Postfach 445, D-30004 Hannover Philipsbornstraße 1, D-30165 Hannover Phone +49 (0) 511 / 9 38 -71 Fax +49 (0) 511 / 9 38 -52 32 Email: [email protected]

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The contents of this publication are the result of many years of research and experience gained in application technology. All information is given in good faith; it does not represent a guarantee with respect to characteristics and does not exempt the user from testing the suitability of products and from ascertaining that the industrial property rights of third parties are not violated. No liability whatsoever will be accepted for damage ­ regardless of its nature and its legal basis ­ arising from advice given in this publication. This does



not apply in the event that we or our legal representatives or management are found guilty of having acted with intent or gross negligence. No liability is borne for damage due to slight negligence. This exclusion of liability applies also to the personal liability of our legal representatives and employees and other persons employed in performing our obligations. ©2001 by ContiTech Holding GmbH, Hannover. All rights reserved.

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