Newly Re-designed P-Series Gearbox improves Backlash, Corrosion Resistance and Center Distance between Input and Outputs! 

Miniature Inline Spur Gearboxes

Our SRX-11 line of inline spur micro gear drives features black anodized aluminum housing and 303 stainless steel gears and shafts to provide a product that will withstand years of use. They are available in a range of configurations with gear ratios up to 3,600:1 and are rated for operating speeds of up to 3,000 RPM. Ondrives.US miniature inline spur gear reducers provide low backlash operation of ≈15 arc-min at any ratio and are designed and manufactured to withstand corrosion caused by harsh working environments.

Order from our selection of mini inline spur gearboxes below or contact us to request a quote for custom or modified gearboxes based on your design specifications. We also provide a Gearbox Buyers Guide to assist you with choosing the right inline spur speed reducer for your application.


The Ondrives.US Advantage for Inline Spur Gear Drives

Inline spur gearboxes are engineered for encoder applications and come in both standard and “micro” sizes.  Micro inline spur speed reducers work by transferring motion or power though a shaft that is mounted to a motor or used with a shaft coupling. Mini inline spur gearboxes for encoders are compact and lightweight, and feature a very low movement of inertia at the shaft output.
Our inline spur gearboxes are designed for encoder applications and manufactured from sturdy materials to deliver high performance for your power transfer application. Other advantages and features for our inline spur gear reducers include:
  • Low backlash operation of 15 arc-minutes
  • Speed up to 3,000 RPM
  • Output torque of 1 oz.-inch
  • Compact design
  • In-line shaft output
  • Available with inch shafts
  • Gear ratios ranging from 9:1 to 3600:1
  • Black anodized aluminum housing for corrosion resistance
  • 303 stainless steel gears, shafts and ball bearings
  • Same or opposite direction of shaft rotation

Contact Us for Standard or Custom Designed Inline Spur Micro Gearboxes

Ondrives.US provides gearboxes and inline spur gear drives in various configurations to meet your encoder application requirements. For unique applications, contact us to discuss how we can modify our standard mini gear drives or create a customized solution based on your specifications.