Overview
Motovario B153 15.40:1 bevel gearbox with a 90mm hollow bore output and 160B5 IEC motor input, engineered for efficient 90° right-angle drive integration across demanding industrial transmission applications.
Designed for reliable everyday use, it provides controlled speed reduction and efficient torque transfer for OEM machinery, plant equipment, and continuous-duty processing systems.
Low Reduction: Suited to applications that need higher output speed with effective torque gain, making it a strong choice for faster conveyors, packaging lines, transfer equipment, and light-to-medium duty automation.
This version combines a 90mm hollow output bore with a 160B5 IEC motor input, giving a robust drive solution for larger motor pairings where secure shaft connection and consistent power transmission are essential.
With its 160B5 flange input, this configuration is intended for larger IEC motor frames, increasing input capacity while maintaining a compact right-angle layout and dependable industrial performance.
As part of the modular Motovario B Series bevel helical gearbox range, this unit offers flexible mounting possibilities, simple IEC motor adaptation, and proven long-term service in industrial environments.
Key Specifications
Regulations: No
Bevel Helical: PAM B
Size: 153
Housing Version: U-Universal
Output Shaft Version: C-Hollow Shaft
Ratio (i): 15.40
Input Dim: Ø350 x 42 (IEC160 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 | ~91 rpm |
| 2-Pole | 2800 | ~182 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 160B5 IEC motor input. Confirm flange compatibility below:
| Motor Input | IEC Standard | Input Dimensions |
|---|---|---|
| 160B5 | IEC 60072 / IEC 60034 (B5 flange) | Ø350 x 42 |
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 15.40:1 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: higher-speed right-angle drive applications where you still need a worthwhile increase in torque, such as packaging systems, belt conveyors, feeders, and automated transfer equipment.
Selection tip: a 15.40:1 ratio works well when the application benefits from a quicker output speed without losing the torque support needed for stable operation. It is especially useful for machinery that runs continuously and needs a good balance of speed, compact installation, and driveline efficiency. Always confirm starting load, inertia, and daily operating cycle before final selection.
FAQ
Is 15.40:1 suitable for heavier-duty applications?
It can be, provided the motor size, service factor, and load conditions are matched correctly. This ratio is generally better suited to applications needing relatively higher output speed rather than maximum reduction.
Can this gearbox be used with inverter-controlled motors?
Yes — it is suitable for use with VFD-controlled motors, allowing more precise speed adjustment and smoother machine control. For extended low-speed operation, always make sure the motor has adequate cooling and is sized correctly for the load.
Configuration Notes
Input flange note: the 160B5 IEC input is intended for larger motor frames, making this version suitable for applications requiring greater motor capacity and stronger input-side performance.
Output bore note: the 90mm hollow bore suits larger driven shafts and provides a solid mechanical connection for stable torque transmission in heavier industrial assemblies.
Application example: well suited to packaging conveyors, transfer lines, or material handling systems where a compact right-angle drive, larger motor compatibility, and relatively fast output speed are all required.
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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