Bonfiglioli Bonfiglioli VF/W
Bonfiglioli VF and W series worm gear units and gear motors, with locking torques from 13 to 7,100 Nm.
The VF/W is Bonfiglioli's series of right-angle worm gear units and gear motors. The VF series covers sizes 27, 30, 44, 49, 130, 150, 185, 210 and 250, and the W series sizes 63, 75, 86 and 110. The catalogue also describes the helical-worm versions (VFR, WR) and the two-stage combinations (VF/VF, VF/W, W/VF). The manufacturer's documentation indicates locking torques from 13 to 7,100 Nm, single-stage ratios from 7 to 100 and transmissible power from 0.04 to 75 kW.
The full code of a gear unit is read from the label on the housing and is made up of the gear unit type, size, options, mounting position and ratio, for example the structure "W 63 L1 UF1 — 24 S2 — B3" in the manufacturer's catalogue. For a quotation, please send us the full code, a photo of the nameplate and, for a gear motor, the motor data; we confirm the variant in the manufacturer's documentation before issuing the quotation.
Models and codes
| Code | Note |
|---|---|
| VF 27 | smallest VF size in the catalogue; locking torque 13 Nm. |
| VF 44 | VF size with cast aluminium housing; locking torque 55 Nm. |
| VFR 44 | helical-worm version of size 44, with L1/L2 torque limiter options in the catalogue designation. |
| VF 49 | VF size with locking torque 90 Nm. |
| W 63 | smallest W size; locking torque 200 Nm. |
| W 110 | largest W size; locking torque 830 Nm. |
| VF/W 44/75 | combined two-stage gear unit, listed in the manufacturer's catalogue. |
| VF 250 | largest VF size; locking torque 7,100 Nm. |
Key specifications
| VF sizes | 27, 30, 44, 49, 130, 150, 185, 210, 250 |
|---|---|
| W sizes | 63, 75, 86, 110 |
| Locking torques (manufacturer's documentation) | 13 – 7.100 Nm |
| Transmission ratios (single stage) | 7 – 100 |
| Transmissible power | 0.04 – 75 kW |
| Housing | die-cast aluminium (VF 27–49), cast iron (VF 130–250), monobloc aluminium (W) |
| Motor mounting | B5 (VF 30–250, W); B14 (VF 30–49, W) |
| Motor protection rating | IP55 standard (IP54 on brake motor) |
Bonfiglioli documentation for the VF/W series and the VF-W catalogue (edition R11_6) is current, with no mention of withdrawal from production.
Frequently asked questions
How do I identify the full code of a VF or W gear unit?
The code is read from the nameplate on the housing and includes the type (VF, VFR, W, WR or combined), size, options, ratio and mounting position. You can send us a photo of the nameplate; we check the code structure in the manufacturer's catalogue before quoting.
Can I replace a VF gear unit with a W one?
The series have different sizes and torques, and interchangeability cannot be established from the designation alone. Please send us the existing code, the ratio and the mounting data (shaft, flange, position); we confirm the fit from the manufacturer's documentation.
What data should I send for a gear motor, not just a gear unit?
In addition to the gear unit code, the motor nameplate data: power, number of poles, voltage and frequency, size and mounting (B5 or B14), and any brake.
Other Bonfiglioli series
The meaning of each segment of a code (for example "L1F1350 544") and the detailed rated torque values per ratio are established from the nameplate and from the selection tables of the catalogue. The torque values in the code table are locking torques.
Updated: 2026-11-12