Overview
Configured for a 100-112B5 motor input, this BA72 bevel helical gearbox offers dependable 90° transmission together with the standard 35mm hollow output bore for common industrial shafting.
Reduction profile: At 22.19:1, the BA72 moves further into medium reduction territory, providing a more deliberate output speed and stronger torque increase for feeders, conveyors, and indexing applications.
For plant layouts using larger B5 motor flanges as standard, this combination gives straightforward integration without changing the usual 35mm output connection.
The BA72 bevel-helical design is intended for smooth torque transfer, consistent running characteristics, and dependable service life in conveyors, machinery lines, and general plant equipment.
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.
Key Specifications
Regulations: No
Bevel Helical: PAM B
Size: A72
Housing Version: U-Universal
Output Shaft Version: C-Hollow Shaft
Ratio (i): 22.19:1
Input Dim: Ø250×28 (IEC 100-112 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.
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 | ~63 rpm |
| 2-Pole | 2800 | ~126 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 100-112B5 IEC motor input. Confirm flange compatibility below:
| Motor Input | IEC Standard | Input Dimensions |
|---|---|---|
| 100-112B5 | IEC 60072 / IEC 60034 (B5 flange) | Ø250 × 28 |
If you’re unsure whether your motor is B5 or B14, contact our technical team for compatibility confirmation.
Internal Links & Compatible Options
Same ratio, different motor input: jump to the BA72 22.19:1 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
Ratio Selection Tips
Best for: continuous-duty conveyors, packaging lines, and process handling systems where steady output and stronger pulling force are needed.
Selection tip: use 22.19:1 when you want a more settled shaft speed than 17.94:1 while keeping the gearbox comfortably in the balanced medium reduction range.
FAQ
Will this ratio be too fast for my application?
For many industrial machines, 22.19:1 sits in a comfortable middle ground. It is slower than low-ratio versions, but still not as slow as the higher torque-biased BA72 options.
Can I run this with a VFD?
Yes — 22.19:1 works well with inverter-driven motors where line speed or process rate needs adjustment. It is a practical gearbox/VFD combination for many general automation duties.
Configuration Notes
- Input flange note: the 100-112B5 motor input allows direct flange mounting for larger IEC motors where a more substantial B5 interface is preferred.
- 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: main conveyor drives, process machinery, and OEM equipment where a larger direct-mount motor arrangement is required.
Typical Applications
- Commonly used on conveyor drives, transfer systems, industrial automation machinery, and OEM production equipment.
- 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
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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