Series RG Gearbox - NEMA

Rugged Performer

The Series RG gearbox is an adaptable solution for mid range power applications. Available with single or double reduction, the Series RG is designed with Cone Drive’s double-enveloping worm gear technology and offers multiple output options. Tapered roller output bearings provide the capacity required to handle heavy overhung loads.

Key Features


  • Center Distance: 1.5 thru 3.5 in
  • Ratio: 5:1 thru 600:1
  • Reductions: Single or double
  • Output Torque (Constant Speed): < 10,800 lb-in
  • Motor Connection: Integrated spider coupling (single reduction), non-fretting bushing (double reduction)
  • Input Shaft: Single or double extended
  • Output Shaft: Inch or metric, solid (single or double extended), hollow, shrink disc, mounting flange
  • Lubricant: Factory filled with synthetic lubricant
  • I.P. Rating: IP 65

Cone Drive’s double enveloping worm gear has an hourglass shape and the gear is machined with unique contours to ensure maximum contact between the components.  This added contact creates a high torque capacity, high durability worm gear.  Cone Drive’s worm gear design provides you a higher load capacity, lower contact stress, and greater shock capacity.  These improved ratings offer you the flexibility to downsize the gearbox to save space or increase the motor to get more power

Please review the Installation and Maintenance manual for proper oil amounts.

User will assume risk of non-approved lubricants which may affect performance of the gearbox and void warranty.

Normal gearbox operating temperature measured at the oil sump area of the housing should not exceed 100°F (38°C) above ambient temperature or 200°F (93°C) maximum. If the gearbox operating temperature exceeds these limits, shut down the unit and contact Cone Drive. Excessive oil sump temperature is indicative of overloading, misalignment, or improper or marginal lubrication. Continuous operation of the gearbox with the oil sump temperature above 200°F (93°C) will result in failure of the gearbox

Backdriving or self-locking cannot be guaranteed by Cone Drive, therefore a brake mechanism is always recommended

A fan should be used whenever the absorbed power in a continuous application exceeds the thermal horsepower rating of the unit

Zero backlash units are designed for cyclic (non-continuous) positioning applications.  Ratios below 20:1 are not suggested.  Long duty cycle applications can cause excessive gearbox heat and wear.  The motor horsepower required for a zero backlash design is higher than that of a standard design gearset

Yes.  Our engineering team at Cone Drive has years of experience creating customized solutions for our customers.  Please reach out to our Application Engineering team to get started.

Cone Drive has developed a specialized sectioned worm design to achieve zero backlash.  As the gear wears, the worm self-adjusts to compensate and maintain zero backlash.

The Cone Drive Product Development Laboratory is a state-of-the-art facility directly adjacent to our Traverse City, Michigan manufacturing location. The lab has the capacity to test a wide range of gear reducer products, for both Cone Drive products as well as those manufactured by other companies. The lab includes capability to run a wide variety of tests including load testing for evaluating reducer performance and operating efficiency.

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