Parallel-shaft describes shaft geometry, not guaranteed interchange. Verify the complete manufacturer model and input/output arrangement before narrowing a replacement.
Identify the gear unitCapture the exact manufacturer series, ratio, input motor or shaft arrangement, output dimensions and mounting orientation.
Compare technical limitsMatch required torque, speed, service factor, overhung load, cooling, lubricant and duty using the exact family or model source.
Check actual interchangeDo not treat two catalog models as substitutes just because both are parallel-shaft units or share a nominal ratio. Confirm dimensions and duty with the supplier.
01Output shaft or hollow-bore size and orientation
02Center height, foot pattern, and flange geometry
03Ratio, output speed, torque, and service factor
04Motor/input adapter and input shaft details
05Lubrication, mounting position, and thermal rating
Use the category as a starting point: architecture alone does not establish interchangeability. Open the exact family/model or a manufacturer-published replacement page before selecting a substitute.