Planetary gearboxes selected

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 to 1 ratio) and the Apex AD-Series of compact gearboxes (with 50 to 1 ratio). Both Apex Dynamics product ranges deliver high torque, low backlash of less than 1 arc-minute and superior levels of accuracy; ideal for PTG Holroyd machines.

The APC-Series comes with a patented curvic coupling output, giving a high concentricity, low runout, 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 torque capacity is boosted by up to 25%.

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