Motovario BA72 22.19:1 Bevel Gearbox – 35mm Bore, 90B5

Overview

This BA72 configuration combines a 90B5 motor flange with the standard 35mm hollow bore, making it a capable right-angle gearbox for general industrial drives that need efficient 90° power transmission.

Reduction profile: The 22.19:1 ratio gives a firmer speed drop than the lower medium options, which helps where machinery needs steadier movement, better control, and more torque at the output.

For equipment already standardised around B5 motor mounting, this version helps simplify replacement and integration while retaining the BA72’s compact right-angle form.

In service, the BA72 arrangement is valued for efficient right-angle transmission, stable output behaviour, and the kind of durability expected in continuous-duty industrial environments.

---

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: Ø200×24 (IEC 90 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 90B5 IEC motor input. Confirm flange compatibility below:

Motor Input	IEC Standard	Input Dimensions
90B5	IEC 60072 / IEC 60034 (B5 flange)	Ø200 × 24

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 90B5 motor input offers direct flange mounting for IEC 90 frame motors and is well suited to tidy, rigid installations.
• 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: general conveyor drives, line machinery, and plant equipment where direct B5 motor mounting is preferred.

Typical Applications

• Typical uses include industrial conveyors, processing lines, automated machinery, and materials handling 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.