Overview
B083 116.25:1 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.
Engineered for continuous-duty operation, the B083 116.25:1 configuration provides controlled reduction, dependable torque delivery, and a durable right-angle drive package built around a 40mm hollow bore and 100-112B5 motor input.
Very high reduction: At 116.25:1, this 100-112B5 / 40mm configuration is aimed at low-speed, high-torque duty where controlled output, improved starting leverage, and dependable reduction are more important than maximum shaft speed.
Its 100-112B5 IEC motor input allows this 116.25:1 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 116.25:1 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: 116.25:1
- 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 | ~12 rpm |
| 2-Pole | 2800 | ~24 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 116.25:1 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 maximum torque and very low output speed — ideal for heavy conveying, bulk handling, rotary valves, and high-inertia loads that demand stable, controlled motion.
- Selection tip: ultra‑low speed drives need careful checks — confirm holding torque, braking/overrun control, and any backdriving requirements of the application.
FAQ
Is a very high ratio suitable for heavy conveyors?
Yes — very high ratios are commonly used where maximum pulling power and stable, low-speed motion are required.
Do I need to worry about stopping/overrun?
Yes — with high inertia loads, consider braking (mechanical brake or VFD braking) and confirm holding/overrun requirements to keep motion controlled.
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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