Synchromesh Cable Drives for Positive Traction

Featured Product from Stock Drive Products & Sterling Instrument - SDP/SI

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Hicksville, NY -- A new series of Synchromesh Cable Drives introduced by SDP/SI are uniquely designed for positive traction to replace conventional ropes, simple cables and cog drives, especially where tight space is an important factor. This new cable drive is designed to provide high precision positioning in electronic equipment such as: copying machines, X-Y plotters, typewriters, printers, word processors, etc. A key feature of the new drive is its ability to be used in three-dimensional serpentine configurations which enable the creation of extremely miniature designs.

Synchromesh cables can be used with lower tension when compared with ropes which reduces power consumption. Unlike ropes, wind-up around drums is not required which eliminates problems with dislocated printing caused by accumulation of elongation when rope is used due to wind-up.

This patented miniature cable, identified as the A 6J 9-... (inch) and A 6J 9M... (metric) series, consists of a straight center section, encased in Nylon and a helically wound outer length encased in Polyurethane. Both cable strands consist of braided stainless steel cores.

The cable is stocked in both inch and metric in the following Pitches: .120", .150", .200" and .250" (3.048 mm, 3.81 mm, 5.08 mm, and 6.35 mm). The cable O.D. ranges from .059" to .134" (1.5 mm to 3.4 mm) and has minimum tensile loads ranging from 40 lbf to 200 lbf (18 kg to 90 kg). Pitch accuracy of the drive is ±.002" (±0.05 mm) and cumulative pitch error is ±.16" (±4.06 mm) max. over 100 pitches. The flexing cycle life of the drive is 106 minimum where the pulley pitch radius is R = 13.9 x (straight center section diameter d2) and the static tension is TS = .05 x TB (Min. Tensile Load). The temperature range recommended is -22°F to +176°F (-30°C to + 80°C).

There is a complete selection of 34 inch and metric Synchromesh pulleys designed to fit 1/8" to 3/8" (2 mm to 10 mm) shafts. These pulleys are made of acetal with brass or aluminum inserts to provide the strength characteristics of all metal pulleys with the weight and cost savings associated with plastic components.

SDP/SI offers a wide variety of inch and metric small mechanical components for the design engineer and OEM. Standard components can easily be located and purchased in one convenient place, shop online 24/7. The engineer not only meets all his component requirements, but saves valuable time by not having to search other sources. For custom design and manufacturing, speak to our engineers at (516) 328-3300.

Quotes, online orders, and 3D CAD models are available at our estore at

SDP/SI - Stock Drive Products/Sterling Instrument, a Designatronics company
250 Duffy Avenue, Hicksville, NY 11801
Phone: (516) 328-3300; (800) 819-8900