Solutions in Motion™

    Industrial Engineering: How to Size and Select the Appropriate Right Angle Gearbox

    Posted by Troy Branham on May 10 ,2017

    right angle gearboxRight-angle gearboxes are useful across a broad range of industrial applications. To choose the best gearbox(es) for your design, you’ll need to consider size, capability, mounting, and environmental requirements.

    All of these factors affect sizing and selection of right-angle gearboxes:

    • Input speed and horsepower
    • Target output speed, or output torque (this helps determine gear ratio requirements)
    • Service characteristics, such as how many hours per day the gearbox will operate and whether it will need to withstand vibration and/or shock
    • Overhung loads and axial loads, external moment loads and axial loads should be supported by bearing block supports. Unsupported loads can transfer to the internal gears and push them out of alignment and accelerate wear and tear.
    • Shaft versus hollow-core input (and output)
    • Gearing orientation (Shafts can protrude vertically or horizontally, and with a right-angle worm gearbox, the worm can be positioned over or under the wheel. If the shaft will protrude downward, you may want to add redundant seals.)
    • Special-needs working conditions that require stainless-steel shafts and housing or corrosion-resistant paint
    • Mounting requirements

    There’s a style and size just right for your needs

    W.C. Branham was the first company in the industry to introduce right-angle hollow-bore helical gearboxes with a pre-lubricated, sealed, leak-proof gearcase. These gearboxes outperform other types of right-angle models, transmitting power by using two helical gears which mesh at 90o. They are bi-directional, and they’re easy to install because they slide axially along keyed shafts.

    We manufacture a wide range of right-angle gearbox options, including:

    Most of our gearboxes are rated to operate at 1200-1800 maximum rpm. Depending on the model, these products come in:

    • Sizes from 2.87 to 6.6 inches tall
    • 2-way, 3-way- or 4-way configuration
    • .5 to 2.5 inch bore center line
    • 1:1. 2:1 or 3:2 gear ratios 

    This video answers common design questions about right angle gearboxes.

    Custom design is often the best choice

    Despite the wide range of standard sizes and configuration options, sometimes a custom-designed right-angle gearbox makes more sense. Customized products can precisely meet your design specs. W.C. Branham’s engineering and manufacturing experts are always happy to assist you with design ideas as well as gearbox selection and implementation advice. 

    We use the latest 3D CAD software and can provide 3D STEP CAD files for any of our gearboxes.

    New Call-to-action


    Topics: Right Angle Gearbox