Overview
With its 180B5 IEC motor input and 90mm hollow bore output, this Motovario B153 60.92:1 bevel gearbox provides a practical right-angle solution for industrial transmission systems.
For production, conveying, and plant equipment, it delivers reliable reduction performance together with the consistent torque transfer expected from a heavy-duty bevel helical gearbox.
High Reduction: With its higher speed reduction, this version is ideal for machinery that requires slower, more controlled output movement together with reliable torque multiplication under load.
Pairing a 90mm hollow output bore with 180B5 IEC motor input, this model offers secure installation, reliable drive performance, and good suitability for heavier industrial machinery duties.
Specified with 180B5 IEC motor input, this gearbox is intended for industrial builds that need reliable flange-motor integration together with a compact bevel helical transmission layout.
Part of the established Motovario B Series bevel gearbox family, this unit supports practical mounting flexibility, straightforward motor fitment, and dependable service life in industrial use.
Key Specifications
Regulations: No
Bevel Helical: PAM B
Size: 153
Housing Version: U-Universal
Output Shaft Version: C-Hollow Shaft
Ratio (i): 60.92
Input Dim: Ø350 x 48 (IEC180 B5)
Output Shaft Dim: Ø90
Rotation Direction: Standard
ON-Oil Plugs: Breather-Drain-Level (Standard)
Mounting Position: B3
ON-Output Oil Seal: NBR-Nitrile
ON-Input Oil Seal: NBR-Nitrile
ON-Output Bearings: Taper Roller Bearings
ON-Lubrication: Without Oil
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 | ~23 rpm |
| 2-Pole | 2800 | ~46 rpm |
Need torque confirmation? Output torque depends on motor power (kW), gearbox efficiency, and service factor. Use our Gearbox Service Factor Calculator or contact us for verified torque figures.
Motor Input Chart (IEC Flange Details)
This gearbox is supplied with a 180B5 IEC motor input. Confirm flange compatibility below:
| Motor Input | IEC Standard | Input Dimensions |
|---|---|---|
| 180B5 | IEC 60072 / IEC 60034 (B5 flange) | Ø350 x 48 |
If you’re unsure whether your motor is B5 or B14, contact our technical team and we’ll confirm compatibility.
Internal Links & Compatible Options
Same ratio, different motor input: jump to the B153 60.92:1 variant you need with a 90mm bore.
Need a different ratio? Explore the closest B153 90mm bore ratios to this version.
More B153 options: Browse all Motovario B153 gearbox ratios
Explore the full B Series range: Motovario B Series bevel gearboxes
Helpful calculators: Gearbox Ratio & Speed Calculator | Output Torque Calculator
Need the non-standard 80mm bore option?
If your application requires a 80mm output bore instead of the standard 90mm, we can supply this as a non-standard configuration. View available B103 options and request the 80mm version here: Motovario B153 Gearbox.
Ratio Selection Tips
Best for: machinery requiring slower, more controlled output movement together with reliable torque multiplication, including feeders, mixers, and bulk handling equipment.
Selection tip: a 60.92:1 ratio suits applications that need slower output movement and dependable torque increase in a compact right-angle gearbox format. It is a strong option for equipment handling heavier or more demanding process loads.
FAQ
Will this ratio be too fast for my application?
A 60.92:1 ratio is best for applications where controlled, slower output speed is required alongside stronger torque multiplication. If your equipment needs quicker output speed, choose a lower reduction ratio.
Can I run this with a VFD?
Yes — using a VFD can improve speed adjustability and provide smoother starts and stops. For continuous low-speed operation, check motor ventilation and thermal performance to ensure reliable operation.
Configuration Notes
Input flange note: the 180B5 IEC input is suitable for larger IEC motor frame compatibility, making this configuration useful where more substantial motor pairings are needed.
Output bore note: the 90mm hollow bore supports larger output shaft arrangements, helping maintain a secure connection and effective torque transfer in industrial transmission systems.
Application example: ideal for feeders, mixers, and bulk handling equipment where slower shaft speed and dependable torque multiplication help maintain stable operation.
Need help selecting the correct ratio, bore size, or motor input?
Contact our gearbox specialists for sizing support, torque checks, and availability confirmation.
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