Timing belts / Clamping plates

Profiles and qualities of our neoprene timing belts:

(ex stock subject to prior sale)

Neoprene timing belts have a strong tension member made of fibre glass, polyester or aramid and a back and teeth made of high-grade rubber. The entire timing belt is vulcanised to form a single unit.

Traditional timing belts with a trapezoidal profile:

• Unilateral timing belt profile MXL - 2.032 mm; XL - 5.08 mm; L - 9.525 mm; H - 12.7 mm; XH - 22.225 mm
• Double timing belt profile D/XL - 5.08 mm; D/L - 9.525 mm; D/H - 12.7 mm (teeth face each other without any offset)

High performance timing belts with an arched tooth profile:

HTD® profiles

• Standard version profile 3M - 3 mm, 5 M - 5 mm, 8 M - 8 mm, 14 M - 14 mm
• SYNCHROFORCE® CXP profile 5 M - 5 mm, 8 M - 8 mm, 14 M - 14 mm
• SYNCHROFORCE® CXA profile 8 M - 8 mm, 14 M - 14 mm : on request
• HTD® - double timing belt profile D/5M - 5 mm, D/8M - 8 mm, D/14M - 14 mm

STD® profiles

• Standard version profile S 3M STD®, S 5M STD®, S 8M STD®
• SYNCHROFORCE® CXP profile S 8M STD®
• SYNCHROFORCE® CXA S 8M STD®

High performance timing belts with an arrow interlocked profile:

Design HOT Helical Offset Tooth

• CONTI® SILENTSYNC profile HOT 8, types Y (yellow), W (white), P (purple)
• CONTI® SILENTSYNC profile HOT 14, types B (blue), G (green), O (orange), R (red)

Conti® SilentSync timing belts (formerly known as Goodyear Eagle NRG) have an arrow interlocked profile called HOT Helical Offset Tooth design. This HOT profile delivers an operational smoothness unrivaled by other timing belts, a reduced noise level and lower vibrations.

Profiles and qualities of our polyurethane timing belts:

(ex stock subject to prior sale)

Polyurethane timing belts have a tension member made of steel, aramid or even carbon. These belts are cast in a mould.

Traditional timing belts with a trapezoidal profile:

• Unilateral timing belt profile XL - 5.08 mm; L - 9.525mm
• Unilateral timing belt SYNCHROFLEX® profile T 2.5; T 5, T 10, T 20
• Double timing belt SYNCHROFLEX® profile D/T 5 and D/T 10 (teeth face each other without any offset)
• Standard flex belts profile T 5, T 10

High performance timing belts:

• SYNCHROFLEX® profile AT 3, AT 5, AT 10 (also supplied as GEN III), AT 20 on request
• SYNCHROCHAIN® CTD profile 8 M, 14 M with an aramid tension member
• SYNCHROCHAIN® CTD profile 8 M, 14 M with a carbon tension member
• Standard flex belts profile AT 5, AT 10

Profiles and qualities of our timing belts sold by the meter:

(ex stock subject to prior sale)

• Polyurethane with steel cord, profile XL, L, H, 5M, 8M, S8M, 14M, T5, T10, T20, AT5, AT10, AT20
• Neoprene with glass or steel cord, profile XL, L, H, 3M, 5M, 8M, 14M

Profiles and qualities of our clamping plates:

for linear drives which do not need welding:

• Aluminium profile XL, L, H, 5M, 8M, 14M, T5, T10, AT5, AT10

Further information about our timing belts and clamping plates:

Toothed belt or timing belt is a collective term for drive belts that positively transmit torques in mechanical drive systems. Timing belts combine the benefits of a rubber belt with those of a chain. Modern timing belts consist of a tension member, teeth, a back and a protective fabric. They are characterised by their tooth shape, profile, pitch, the materials used and the construction and material of the tension members

We differentiate between traditional belts with a trapezoidal tooth profile and high performance timing belts either with an arched tooth profile (HTD®, STD® and CTD), an optimized trapezoidal AT profile or an arrow interlocked profile called HOT Helical Offset Tooth design. The trapezoidal teeth fit into the tooth gaps of the corresponding profile pulley without friction. Better quality materials are used for the tension members in high performance timing belts. The teeth are larger and have a wider tooth base. This improves engagement behaviour and reduces noise emissions. One major difference is in the manufacturing process. The neoprene or chloroprene belts are made of synthetic rubber and are vulcanised, while the abrasion-resistant polyurethane timing belts with tension members made (mostly) of steel cord are cast.

Our timing belts are either manufactured in continuous lengths or supplied by the meter. We can weld the polyurethane meter material to the desired length in our own workshop.

Positive synchromesh transmission was also introduced in the early 20^th century alongside the existing belt drives. The first tooth profile, as we know it today, was developed in the USA by L.H. Gilmer. The first printed toothed belt catalogue appeared as early as 1949!

Gilmer recognised the gap between drive systems with rubber belts and those with chain drives. Timing belts offered the following advantages over V-belts and chains:

• low-noise
• no lubrication required
• higher power transmission due to the positive gearing
• higher rotational speeds
• negligible linear expansion
• smaller installation dimensions
• tighter wrap angles

A great deal of research was required to achieve the variety of timing belt profiles, grades and dimensions that exist today. The stringent requirements of a wide range of drive systems have be taken into consideration. Ever greater power levels have to be transmitted, the belts have to be in use for longer, even in the harshest of environments, in ever narrower spatial conditions, run even more quietly, be more resistant to an increasing range of materials and influences - meanwhile there is a drive belt for almost every requirement.

Of fundamental importance for the operating characteristics of the various timing belts are the producers' manufacturing processes and manufacturing technologies. We are a Swiss representatives for ContiTech Antriebssysteme GmbH (www.contitech.de). We also work with several European and Asian suppliers who supply us with some well-known branded products.

Continuous development of the materials used, the gear geometries and the manufacturing process results in significantly improved performance and increasingly better behaviour during operation of the gears.