Overview
Motovario BA52 31.63:1 bevel gearbox with a 25mm hollow bore output and 63B5 IEC motor input, configured for compact right-angle power transmission in smaller industrial and OEM drive assemblies.
This version is well suited to compact OEM drives, lighter conveyors, and smaller machine assemblies. It gives OEMs and maintenance teams a tidy way to introduce 90° power transmission without moving to an oversized gearbox assembly.
Medium Reduction: At 31.63:1, this version provides balanced speed reduction with a stronger torque increase. That makes it a strong fit for conveyors, packaging machinery, transfer equipment, and compact process systems where a steadier output speed and more substantial drive performance are needed.
The 25mm hollow bore output gives a straightforward shaft-mount arrangement for smaller driven components, helping simplify installation and maintain reliable torque transfer.
The 63B5 IEC motor input is best suited to smaller motor frame pairings where the priority is a neat, compact drive package for lighter-duty equipment. Being part of the Motovario BA Series platform, it offers a proven modular solution for smaller industrial machines and replacement drive builds.
Key Specifications
Regulations: No
Bevel Helical: PAM B
Size: A52
Housing Version: U-Universal
Output Shaft Version: C-Hollow Shaft
Ratio (i): 31,63
Input Dim: Ø140×11 (IEC 63 B5)
Output Shaft Dim: Ø25
Rotation Direction: Standard
ON-Oil Plugs: No Plugs (Standard)
Mounting Position: U
ON-Output Oil Seal: NBR-Nitrile
ON-Input Oil Seal: NBR-Nitrile
ON-Output Bearings: Ball Bearings
ON-Lubrication: Mineral SAE 85W-140
Paint: Ral 5010 Blue
Output Speed (4-Pole vs 2-Pole Motors)
Calculated nominal output speed using a standard IEC motor:
| Motor Type | Input Speed (rpm) | Estimated Output Speed (rpm) |
|---|---|---|
| 4-Pole | 1400 | ~44 rpm |
| 2-Pole | 2800 | ~89 rpm |
Need torque confirmation? Output torque depends on motor power, gearbox efficiency, and service factor. Use our calculator tools or contact us for confirmed application data.
Motor Input Chart (IEC Flange Details)
This gearbox is supplied with a 63B5 IEC motor input. Confirm compatibility below:
| Motor Input | IEC Standard | Input Dimensions |
|---|---|---|
| 63B5 | IEC B5 | 11 x 140 |
If you’re unsure whether your motor is B5 or B14, contact our technical team for compatibility confirmation.
Internal Links & Compatible Options
Same ratio, different motor input: jump to the BA52 31.63:1 variant you need with a 25mm bore.
Need a different ratio? Explore the closest BA52 25mm bore ratios to this version.
More BA52 options: Browse all Motovario BA52 gearbox ratios
Explore the full BA Series range: Motovario BA Series bevel gearboxes
Helpful calculators:
Gearbox Ratio & Speed Calculator |
Output Torque Calculator
FAQ
Why choose a 31.63:1 reduction ratio?
A 31.63:1 ratio is a strong option when machinery needs a balanced output speed together with a more noticeable torque increase. It suits applications that need more speed reduction than low-ratio gearboxes while still avoiding the very slow outputs associated with higher reduction levels.
What applications is this configuration suited to?
This gearbox is well suited to conveyors, packaging machinery, transfer drives, feeders, and OEM equipment where a 25mm hollow bore and 63B5 motor input are required.
Configuration Notes
Input flange note: the 63B5 IEC motor input is designed for smaller motor frame sizes, making this gearbox suitable for compact drive assemblies where space efficiency and simple motor matching are important.
Output bore note: the 25mm hollow bore is intended for smaller driven shafts, providing secure shaft engagement and dependable torque transfer in lighter-duty and general industrial applications.
Application example: a good fit for conveyors, compact transfer systems, packaging equipment, and OEM machinery where a right-angle gearbox with balanced output speed and stronger torque gain plus a 63B5 motor input is needed.
Need help selecting the correct ratio, bore size, or motor input?
Contact our gearbox specialists for sizing assistance, torque verification, and availability confirmation.
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