How to identify gearboxes
Gearboxes change speed and torque between a driver and a driven machine.
Have one in front of you? Photograph it and get an evidence-backed identification.
Identify from a photoIdentification clues
- —Name plate: type, ratio, output torque, oil
- —Housing form (inline, right-angle, shaft-mount)
- —Input flange or shaft style
- —Output shaft or hollow bore size
- —Mounting feet or flange pattern
Common types
- —Helical inline
- —Worm
- —Bevel-helical
- —Planetary
- —Shaft-mounted
Typical failure modes
- —Oil seal leakage
- —Gear tooth pitting
- —Bearing failure
- —Overheating from wrong oil
- —Backlash increase
What a replacement must match
- —Match ratio and torque
- —Match mounting and shaft sizes
- —Match input interface to motor
- —Confirm service factor
Photos that help identification
- —Photograph the name plate
- —Show input and output sides
- —Show mounting face
Need a replacement?
Enter a part number or upload a photo to search verified supplier listings.
Find a replacementRelated components
Related guides
General reference information. Always verify against the manufacturer’s documentation before ordering or installing.