Overview
Motovario B163 10.58:1 bevel gearbox with a 100mm hollow bore output and 250B5 IEC motor input, configured for high-capacity right-angle power transmission in demanding industrial drive applications.
Built for heavy-duty OEM machinery, plant equipment, and process systems, this version delivers reliable speed reduction, smooth torque transfer, and dependable long-term mechanical performance under continuous-duty operating conditions.
Low Reduction: The 10.58:1 ratio is well suited to applications that require a relatively faster output speed while still benefiting from practical torque multiplication, making it an excellent choice for conveyors, transfer systems, packaging lines, and material handling equipment.
The 100mm hollow bore output is intended for larger driven shafts, helping provide secure shaft engagement and stable torque transmission in higher-load industrial assemblies.
With its 250B5 IEC motor input, this configuration is designed for larger flange-mounted motor pairings, offering increased input capacity and broader suitability for more demanding drive packages while retaining the modular advantages of the Motovario B Series bevel helical gearbox platform.
Key Specifications
Regulations: No
Bevel Helical: PAM B
Size: 163
Housing Version: U-Universal
Output Shaft Version: C-Hollow Shaft
Ratio (i): 10.58
Input Dim: Ø550 x 65 (IEC250 B5)
Output Shaft Dim: Ø100
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 | ~132 rpm |
| 2-Pole | 2800 | ~265 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 250B5 IEC motor input. Confirm flange compatibility below:
| Motor Input | IEC Standard | Input Dimensions |
|---|---|---|
| 250B5 | IEC 60072 / IEC 60034 (B5 flange) | Ø550 x 65 |
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 B163 10.58:1 variant you need with a 100mm bore.
Need a different ratio? Explore the closest B163 100mm bore ratios to this version.
More B163 options: Browse all Motovario B163 gearbox ratios
Explore the full B Series range: Motovario B Series bevel gearboxes
Helpful calculators: Gearbox Ratio & Speed Calculator | Output Torque Calculator
FAQ
Why is an 10.58:1 ratio a practical choice?
An 10.58:1 ratio is commonly selected when a machine needs to maintain a relatively higher output speed while still gaining useful torque multiplication. It is a good fit for applications that need efficient, fast-running performance without stepping into much slower reduction ranges.
Can this gearbox be paired with larger industrial motors?
Yes — the 250B5 IEC input is intended for larger motor frame compatibility, making this version suitable for heavier-duty drive assemblies and applications that require increased input-side capacity.
Configuration Notes
Input flange note: the 250B5 IEC input is designed for larger flange-mounted motors, giving this gearbox greater flexibility for high-power installations and more demanding industrial drive packages.
Output bore note: the 100mm hollow bore is designed for larger driven shafts, helping ensure secure shaft retention and dependable torque transmission in higher-load applications.
Application example: ideal for heavy conveyors, transfer systems, process machinery, and larger packaging lines where a compact right-angle gearbox, large shaft bore, and relatively fast output speed are all important.
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