Overview
Motovario BA42 28.00:1 bevel gearbox with a 20mm hollow bore output and 80B5 IEC motor input, intended for compact industrial machinery requiring a B5 motor interface, useful torque multiplication, and a practical medium-reduction gearbox layout.
This configuration is well suited to applications that need efficient 90° drive transfer, dependable mechanical performance, and a compact gearbox layout for smaller machine builds and automation assemblies.
Medium Reduction: This balanced medium reduction ratio delivers a balanced mix of speed reduction and torque increase, which suits handling systems, packaging equipment, general conveyors, and OEM drive assemblies.
The 20mm hollow bore output provides a secure and practical fit for smaller driven shafts, helping ensure stable torque transmission and straightforward mechanical integration.
Equipped with a 80B5 IEC motor input, this version is intended for larger compact motor pairings where extra input-side flexibility is needed without moving to a bigger gearbox size. As part of the Motovario BA Series bevel gearbox platform, it offers a modular solution for space-conscious industrial applications.
Key Specifications
Regulations: No
Bevel Helical: PAM B
Size: A42
Housing Version: U-Universal
Output Shaft Version: C-Hollow Shaft
Ratio (i): 28,00
Input Dim: Ø200×19 (IEC 80 B5)
Output Shaft Dim: Ø20
Rotation Direction: Standard
ON-Oil Plugs: No Plugs (Standard)
Mounting Position: U
ON-Output Oil Seal: NBR-Nitrile
ON-Input Oil Seal: NBR-Nitrile
ON-Output Bearings: Ball Bearings
ON-Lubrication: Mineral SAE 85W-140
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 | ~50 rpm |
| 2-Pole | 2800 | ~100 rpm |
Need torque confirmation? Output torque depends on motor power, gearbox efficiency, and service factor. Use our calculator tools or contact us for confirmed application data.
Motor Input Chart (IEC Flange Details)
This gearbox is supplied with a 80B5 IEC motor input. Confirm compatibility below:
| Motor Input | IEC Standard | Input Dimensions |
|---|---|---|
| 80B5 | IEC B5 | Ø200×19 |
Internal Links & Compatible Options
Same ratio, different motor input: jump to the BA42 28.00:1 variant you need with a 20mm bore.
Need a different ratio? Explore the closest BA42 20mm bore ratios to this version.
More BA42 options: Browse all Motovario BA42 gearbox ratios
Explore the full BA Series range: Motovario BA Series bevel gearboxes
Helpful calculators:
Gearbox Ratio & Speed Calculator |
Output Torque Calculator
FAQ
Why choose a 28.00:1 reduction ratio?
A 28.00:1 ratio offers an even balance between output speed and torque multiplication, making it a dependable all-round choice for general industrial drive duties.
What applications is this configuration suited to?
This gearbox is a strong fit for slightly heavier compact conveyors, packaging machinery, bespoke OEM equipment, and industrial transfer systems where a 20mm hollow bore and 80B5 motor input are required.
Configuration Notes
Input flange note: the 80B5 IEC motor input is designed for larger compact motor pairings where extra input-side flexibility is needed without moving to a bigger gearbox size, making this gearbox suitable for compact drive assemblies where space efficiency and simple motor matching are important.
Output bore note: the 20mm hollow bore is intended for smaller driven shafts, providing secure shaft engagement and dependable torque transfer in lighter-duty and general industrial applications.
Application example: well suited to production conveyors, material handling systems, packaging machinery, and general-purpose industrial automation where balanced output speed and torque are needed.
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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