Motovario BA72 67.96:1 Bevel Gearbox – 35mm Bore, 80B5

Overview

Built with an 80B5 motor input, this BA72 gearbox delivers compact right-angle transmission through the standard 35mm hollow bore, giving a straightforward option for shaft-mounted driven equipment.

Reduction profile: At 67.96:1, this configuration sits at the deeper end of the high-reduction BA72 range, making it well suited to slower-running equipment where strong torque delivery and controlled movement matter most.

It is particularly useful in slower conveyor runs, metering equipment, handling systems, and machinery where a calmer output speed improves consistency and load control.

The B5 flange format is often preferred where direct motor mounting is part of the machine design, helping create a neat, familiar drive package for new builds and replacements.

Its bevel-helical construction supports stable torque transfer, good running characteristics, and the long service life expected from industrial geared drives.

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Need the non-standard 30mm bore option?

If your application requires the non-standard 30mm output bore instead of this standard 35mm version, we can supply that configuration as well. View available BA72 options and request the non-standard bore version here: Motovario BA72 Gearbox.

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Key Specifications

Regulations: No
Bevel Helical: PAM B
Size: A72
Housing Version: U-Universal
Output Shaft Version: C-Hollow Shaft
Ratio (i): 67.96:1
Input Dim: Ø200×19 (IEC 80 B5)
Output Shaft Dim: Ø35
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

Designed to IEC mounting and interface standards, this gearbox offers straightforward compatibility with IEC frame motors and dependable performance in direct-on-line or VFD-controlled drive systems.

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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	~21 rpm
2-Pole	2800	~41 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.

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Motor Input Chart (IEC Flange Details)

This gearbox is supplied with a 80B5 IEC motor input. Confirm flange compatibility below:

Motor Input	IEC Standard	Input Dimensions
80B5	IEC 60072 / IEC 60034 (B5 flange)	Ø200 × 19

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 BA72 67.96:1 variant you need (35mm bore).

Need a different ratio? Explore the closest BA72 35mm ratios around this version.

More BA72 options: Browse all Motovario BA72 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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Ratio Selection Tips

Best for: very slow conveyors, heavy handling systems, and industrial machinery requiring the strongest torque output in this BA72 group.

Selection tip: choose 67.96:1 when you need the slowest shaft speed and highest torque multiplication within this BA72 high reduction set.

FAQ

Will this ratio be too slow for my application?
67.96:1 is the slowest of these high reduction options, so it is selected where maximum torque multiplication and lower shaft speed are the main priorities.

Can I run this with a VFD?
Yes — using a VFD with 67.96:1 allows fine speed control and gentler startup while retaining strong low-speed torque output.

Configuration Notes

• Input flange note: the 80B5 motor input gives a compact direct flange arrangement for smaller IEC motors where installation space is limited.
• Output bore note: this build uses the standard 35mm bore. A 30mm BA72 bore is available as a non-standard option if a smaller shaft size is required.
• Application example: compact conveyor drives, transfer systems, and packaging equipment where direct B5 mounting is preferred.

Typical Applications

• Conveyor and transfer drive systems
• Packaging and process handling equipment
• Automated production and assembly lines
• Light materials handling equipment
• Rotary equipment and general machinery drives
• OEM machine and equipment builds

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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.