Overview
Motovario BA42 78.17:1 bevel gearbox with a 20mm hollow bore output and 80B14 IEC motor input, configured for compact industrial drives where a larger small-frame IEC input and dependable right-angle speed reduction are required..
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.
Very High Reduction: This very high reduction ratio is intended for applications that need very low output speed together with strong torque multiplication, making it a practical choice for indexing drives, feed systems, compact process equipment, and machinery where controlled shaft speed is critical.
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 80B14 IEC motor input, this version supports slightly larger small-frame motor pairings where a compact footprint and dependable input-side connection are still important. As part of the Motovario BA Series bevel gearbox platform, it offers a compact modular solution for slower-speed industrial applications where dependable right-angle torque transfer is required.
Key Specifications
Regulations: No
Bevel Helical: PAM B
Size: A42
Housing Version: U-Universal
Output Shaft Version: C-Hollow Shaft
Ratio (i): 78,17
Input Dim: Ø120×19 (IEC 80 B14)
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 | ~18 rpm |
| 2-Pole | 2800 | ~36 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 80B14 IEC motor input. Confirm compatibility below:
| Motor Input | IEC Standard | Input Dimensions |
|---|---|---|
| 80B14 | IEC B14 | Ø120×19 |
Internal Links & Compatible Options
Same ratio, different motor input: jump to the BA42 78.17:1 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 78.17:1 reduction ratio?
A 78.17:1 ratio sits in the very-high-reduction range, making it ideal where very low output speed, stronger torque multiplication, and controlled shaft movement are all important.
What applications is this configuration suited to?
This gearbox is a strong fit for production modules, indexing units, face-mounted compact machinery, and transfer equipment where a 20mm hollow bore and 80B14 motor input are required.
Configuration Notes
Input flange note: the 80B14 IEC motor input is designed for face-mounted motor builds needing a slightly larger motor pairing while keeping the gearbox footprint compact, 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 indexing units, feed mechanisms, dosing systems, slower-running compact conveyors, and general automation equipment where very low output speed is preferred.
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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