Overview
Motovario BA72 8.36:1 bevel gearbox with a 35mm hollow bore output and 100-112B14 IEC motor input, intended for compact right-angle industrial drives that need a larger motor frame without moving up to a much bigger gearbox size.
Low reduction ratio: With its 8.36:1 ratio, this version is suited to equipment needing comparatively fast shaft speed together with dependable torque multiplication, such as packaging systems, transfer equipment, and higher-capacity conveyor sections.
The combination of a 100-112B14 motor interface and a 35mm hollow output bore makes this build especially useful where the non-non-standard 30mm BA72 bore is preferred and a larger compact B14 motor connection is required.
It offers smooth bevel helical transmission, stable running under load, and reliable long-term performance for demanding OEM and continuous-duty industrial applications.
Need the non-standard 30mm bore option?
If your application requires the standard 30mm output bore instead of this 30mm non-standard version, we can supply that configuration as well. View available BA72 options and request the 30mm 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): 8.36:1
Input Dim: Ø160×28 (IEC 100-112 B14)
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 | ~167 rpm |
| 2-Pole | 2800 | ~335 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 100-112B14 IEC motor input. Confirm flange compatibility below:
| Motor Input | IEC Standard | Input Dimensions |
|---|---|---|
| 100-112B14 | IEC 60072 / IEC 60034 (B14 flange) | Ø160 × 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 8.36:1 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: higher-capacity conveyors, larger packaging machinery, and OEM equipment that needs a compact B14 motor arrangement with faster output speed.
Selection tip: pick this setup when you need the larger 100-112 frame B14 input but still want one of the faster BA72 output ratios rather than a heavy reduction configuration.
FAQ
Will this ratio be too fast for my application?
In many conveyor and packaging duties this ratio is intentionally on the quicker side. If the machine needs slow shaft movement, stronger torque multiplication, or softer mechanical output, a higher ratio will usually be the better match.
Can I run this with a VFD?
Yes — this configuration can be run with a VFD for adjustable speed and better process control. As always, confirm motor cooling and low-speed operating limits with the chosen motor.
Configuration Notes
- Input flange note: the 100-112B14 interface allows pairing with larger IEC B14 motors while keeping the installation shorter than an equivalent B5 arrangement.
- Output bore note: the 35mm bore is the standard BA72 size, while a 30mm BA72 bore is available as a non-standard alternative.
- Application example: larger transfer conveyors, higher-capacity packaging systems, and OEM machinery where a compact larger-frame B14 motor must be matched to a faster gearbox ratio.
Typical Applications
- Higher-capacity conveyor sections
- Larger packaging and cartoning equipment
- Transfer and accumulation systems
- Compact OEM machinery with larger IEC motors
- Automated handling equipment
- Industrial retrofit projects needing a larger B14 input
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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