Overview
B083 55.52:1 bevel helical gearbox with a 40mm hollow bore output and 100-112B5 IEC motor input for efficient 90° right-angle power transmission in industrial machinery.
Designed for reliable industrial service, this B083 55.52:1 gearbox offers consistent speed reduction, smooth power transmission, and a practical 40mm hollow bore arrangement matched to a 100-112B5 IEC motor flange.
High reduction: With a 55.52:1 ratio, this 100-112B5 / 40mm gearbox is configured for stronger torque multiplication and lower output speed, making it a good choice for heavier conveyors, process equipment, and applications where controlled movement is important.
Its 100-112B5 IEC motor input allows this 55.52:1 gearbox to pair with larger motor frames, giving designers more scope for higher power transmission through the 40mm hollow bore output arrangement.
As part of the modular Motovario B083 bevel helical gearbox range, this 55.52:1 variant combines IEC motor compatibility, compact right-angle mounting, and a 40mm hollow bore layout for OEM builds, replacements, and upgrade projects using 100-112B5 motors.
Key Specifications
- Series: B Series – Bevel Helical Gearboxes
- Model: B083
- Reduction Ratio: 55.52:1
- Output Bore: 40mm Hollow Bore
- Motor Input: 100-112B5 IEC Flange
- Housing Material: High-strength cast iron
- Gear Type: Spiral bevel + hardened helical stage
- Mounting Positions: B3 Horizontal Mount
- Duty Rating: Suitable for continuous industrial operation (S1)
Engineered for high radial and axial load capacity.
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 | ~25 rpm |
| 2-Pole | 2800 | ~50 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 100-112B5 IEC motor input. Confirm flange compatibility below:
| Motor Input | IEC Standard | Input Dimensions |
|---|---|---|
| 100-112B5 | IEC 60072 / IEC 60034 (B5 flange) | Ø250 × 28 |
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 B083 55.52:1 variant you need (40mm bore).
Need a different ratio? Explore the closest B083 40mm bore ratios above and below this version.
More B083 options: Browse all Motovario B083 gearbox ratios
Explore the full B Series range: Motovario B Series bevel gearboxes
Helpful calculators:
Gearbox Ratio & Speed Calculator |
Output Torque Calculator
Performance & Design Features
✔ Space-saving 90° bevel layout for compact machine designs
✔ High torque output from a compact, industrial-duty footprint
✔ Precision-machined spiral bevel gear set for smooth, low-noise power transfer
✔ Heavy-duty taper roller bearings for strong radial and axial load handling
✔ Well suited to inverter (VFD) driven motors and variable-speed control
✔ Rigid cast iron housing built for OEM and continuous-duty operation
Ratio Selection Tips
- Best for: Best for torque-focused drives with reduced output speed — ideal for heavier conveyors, mixers, and load-handling equipment that must start and run smoothly under load.
- Selection tip: high ratios suit heavier loads — check start torque, thermal load on the motor, and whether a soft start/VFD ramp is needed for smooth acceleration.
FAQ
Does a high ratio increase torque a lot?
Yes — high reduction significantly multiplies torque and reduces output speed, improving stability under load. Always confirm shaft torque and gearbox service factor.
Do I need braking or a soft start?
Often recommended for heavier loads. A VFD ramp or soft starter helps reduce shock loading during start/stop, and braking may be needed for controlled stopping.
Typical Applications
- Conveyor and line-shaft drive systems
- Automated production and assembly lines
- Food and beverage processing machinery
- Materials handling and logistics equipment
- Pumps, mixers, and agitator drives
- OEM machine and equipment builds
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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