Motovario BA42 7.62:1 Bevel Gearbox – 20mm Bore, 71B14

Overview

Motovario BA42 7.62:1 bevel gearbox with a 20mm hollow bore output and 71B14 IEC motor input, built for compact 90° power transmission in smaller industrial machines and OEM assemblies.

This version is a practical choice where installation space is limited but dependable right-angle drive performance is still required. It combines compact dimensions, stable mechanical operation, and straightforward motor integration for lighter-duty industrial systems.

Low Reduction: Offers a relatively fast output speed with controlled torque increase, making it well suited to applications that need efficient motion transfer without moving into medium or high reduction ratios.

The 20mm hollow bore supports neat shaft mounting in compact machinery, while the 71B14 input flange helps this configuration suit smaller motor pairings where a face-mounted motor arrangement is preferred. As part of the Motovario BA Series bevel gearbox range, it provides a flexible solution for compact conveyor, packaging, and automation equipment.

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Key Specifications

Regulations: No
Bevel Helical: PAM B
Size: A42
Housing Version: U-Universal
Output Shaft Version: C-Hollow Shaft
Ratio (i): 7,62
Input Dim: Ø105×14 (IEC 71 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

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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	~184 rpm
2-Pole	2800	~367 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.

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Motor Input Chart (IEC Flange Details)

This gearbox is supplied with a 71B14 IEC motor input. Confirm compatibility below:

Motor Input	IEC Standard	Input Dimensions
71B14	IEC B14	Ø105 x 14

If you’re unsure whether your motor is B5 or B14, contact our technical team for compatibility confirmation.

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Internal Links & Compatible Options

Same ratio, different motor input: jump to the BA42 7.62:1 variant you need with a 20mm bore.

Need a different ratio? Explore the closest BA42 20mm bore ratios above 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

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FAQ

Why choose a 7.62:1 reduction ratio?
This ratio is commonly selected for machinery that still needs fairly quick output rotation but also benefits from extra torque compared with direct drive. It is a good fit where the aim is to moderate speed rather than heavily reduce it.

Why choose the 71B14 motor input version?
The 71B14 input is useful where a smaller face-mounted motor connection is needed for a compact build. It helps suit tighter machine layouts and can be a better choice for equipment where installation footprint matters.

Configuration Notes

Input flange note: the 71B14 IEC motor input is intended for smaller motor frames using a compact face-mount arrangement, helping simplify integration into machinery with limited mounting space.

Output bore note: the 20mm hollow bore is suited to smaller driven shafts, giving secure shaft engagement and reliable transmission for compact drive systems.

Application example: suitable for small conveyors, product handling equipment, packaging machinery, and OEM automation assemblies where a compact right-angle gearbox is needed to combine efficient speed reduction with a space-saving motor connection.

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Need help selecting the correct ratio, bore size, or motor input?
Contact our gearbox specialists for sizing assistance, torque verification, and availability confirmation.