PTG Holroyd is using the APC and ADseries of high-torque, low-backlash planetary gearboxes from Apex Dynamics as part of its ultra-precise CNC helical rotor and gear grinding machines.

Gearboxes are an integral part of PTG Holroyd’s technology as they drive the machine’s axes, making precision key. The company had very specific requirements for output torque, accuracy and product dimensions, and was seeking the optimal gearbox solution. PTG Holroyd approached planetary gearbox specialist Apex Dynamics with a set of tight specifications for its helical grinding machines, which Apex was able to meet with its APC and AD series.

Working alongside PTG Holroyd’s engineers and design teams, Apex Dynamics UK identified the optimalsolutions for the machine tool manufacturer’s helical grinding machines.

The specific Apex Dynamics’ high precision planetary gearboxes best-suited to PTG Holroyd’s helical grinders were from the APC series of rotary flange style gearboxes (with 55:1 ratio) and the Apex AD series of compact gearboxes (with 50:1 ratio). Both product ranges deliver high torque, low backlash of less than 1 arc-minute and high levels of accuracy.

The APC series comes with a patented curvic coupling output, giving a high-concentricity, low run-out, high-torque, zero-backlash connection. Its case-hardened and ground gearing offers high accuracy and high wear resistance for the gear train and, by adding a fourth planetary gear, boosts torque capacity by up to 25%.

The compact, helical, one-piece planetary cage design of the Apex AD series provides PTG Holroyd with a range of benefits. These includea stiff and accurate rotating flange design that supports accuracy of less than 1 arc-minute,and a flange to flange distance as short as 70mm, making it capable of fitting into the smallest spaces.
For further information https://apexdynauk.com/