Miniature Gear Drive is rated for 1/8 hp at 1,800 rpm.

Press Release Summary:

Measuring 1.25 in.³, Miniature RA-300 Gear Drive has 0.250 in. diameter single input shaft, and single or double output shaft mounted in radial ball bearings. Unit is constructed with machined aluminum housing and steel case hardened helical gears in 1:1 and 2:1 ratios. Weighing just 6.1 oz, RA-300 provides output torque of 4.4 lb-in. (1:1 ratio) and 8.8 lb-in. (2:1 ratio).

Original Press Release:

Torque Transmission Unveils Minature RA-300 Gear Drive

Fairport Harbor Village OH -- Torque Transmission, (,  has added another tool for motion control design enginneers to its lineup of high-quality right angle gear boxes and speed reducers: the Minature RA-300 Gear Drive.

The Minature RA-300 Gear Drive measures 1.25 inches in height, width, and depth and features 0.250 inch diameter single input shaft, and single or double output shaft mounted in radial ball bearings.

The RA-300 is a machined aluminum housing, steel case hardened helical gears in 1:1 and 2:1 ratios.  The RA-300 is rated for 1/8 Hp at 1800 rpm with output torque of 4.4 inch lbs (1:1 ratio) and 8.8 inch lbs (2:1 ratio).  Total weight of the unit is 6.1 oz.

“Our high-quality right angle gear boxes and speed reducers are manufactured for a wide spectrum of applications,” said John W. Rampe, Torque Transmission’s president. “We most likely have a right angle gearbox and speed reducer to fit your needs. If we don't, please let us know and we'll modify or custom design a speed reducer for your specific application.  We invite design engineers to use our website,, as a resource to access complete specifications including 3-D drawings for all of our products.”

“Our application support is always available to help size the correct reducer for your product.,” Mr. Rampe continued. “If your specification is different from our standard gearboxes, we will work with you toward a creative and economical solution.”

Torque Transmission built its reputation as a reliable provider of fractional horsepower, (1/20th to 1hp), motion control components since 1960.

Torque Transmission's key advantages include:

• Standard and custom product lines

• Prototyping

• Manufacturing consistency

• ISO 9000-2008 certified

• Off-the-shelf availability of popular standard products

Torque Transmission’s product line consists of Timing Belt Pulleys, Thrust Bearings, Right Angle Gearboxes and Speed Reducers. Torque Transmission brand motion control components can be found  in industries such as food processing, medical, point of purchase, automotive, printing, semi-conductor manufacturing, sports and many others.

Torque Transmission can shorten your time to market with time-proven and cost effective solutions. For more information, including white papers, case histories, product specifications and 3-drawings, visit For immediate assistance with your application, contact Torque Transmission at or 800-544-6642.

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