Overview
Motovario B153 35.02:1 bevel gearbox with a 90mm hollow bore output and 160B5 IEC motor input, built for compact 90° power transmission duties in OEM machinery and industrial plant equipment.
Engineered for reliable long-term operation, it provides smooth speed reduction, dependable torque delivery, and stable mechanical performance across continuous-duty applications.
Medium Reduction: Delivers a practical balance between speed control and torque increase, well suited to continuous-duty conveyors, material transfer equipment, and production machinery.
This version pairs a 90mm hollow output bore with a 160B5 IEC motor input, helping deliver secure shaft engagement, dependable power transfer, and practical flexibility for conveyor systems, packaging equipment, and transfer machinery.
Its 160B5 flange input gives compatibility with larger IEC motors, making it a strong choice for installations where higher motor frame support, compact layout, and proven industrial durability are all important.
Within the Motovario B Series bevel helical gearbox range, this model offers modular configuration flexibility, dependable right-angle performance, and straightforward integration into industrial drive assemblies.
Key Specifications
Regulations: No
Bevel Helical: PAM B
Size: 153
Housing Version: U-Universal
Output Shaft Version: C-Hollow Shaft
Ratio (i): 35.02
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 | ~40 rpm |
| 2-Pole | 2800 | ~80 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 35.02:1 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 that needs moderate speed reduction with dependable torque increase, such as conveyors, handling systems, packaging lines, and continuous-duty industrial equipment.
Selection tip: a 35.02:1 ratio is well suited to applications where neither extremely high output speed nor very heavy reduction is required. It provides a balanced operating point for equipment that needs controlled speed, practical torque multiplication, and efficient long-term running. Always review load characteristics, acceleration demands, and operating cycle before specifying.
FAQ
Will this ratio be too fast for my application?
That depends on your target output speed and torque demand. A 35.02:1 ratio is usually chosen for applications needing a balanced reduction rather than very slow final output. For slower-running heavy-duty machinery, a higher ratio may be more appropriate.
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 160B5 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: suitable for conveying systems, packaging equipment, and process machinery that need a compact right-angle drive with balanced speed reduction and reliable torque output.
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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