Bonfiglioli W 63 Worm Gearbox (VF & W Series)
The Bonfiglioli W 63 (featured model: W 63 U 1/19 P80 B5) is a benchmark cubic-body worm gearbox from Bonfiglioli's world-renowned W Series, engineered alongside the classic rounded VF Series. Combining high torque density, smooth operation, and modular mounting options, Bonfiglioli VF and W worm speed reducers cover nominal output torques from 13 Nm to 7,100 Nm. Manufactured in lightweight aluminum die-cast housings (VF 27-49 and W 63-86) and heavy-duty cast iron housings (VF 130-250 and W 110), these units feature case-hardened ground steel worms and high-tin bronze worm wheels. With standard IEC motor flanges, hollow output shafts, and torque arms, Bonfiglioli VF/W gearboxes provide 100% direct 1-to-1 mechanical compatibility to replace Motovario NMRV, SEW S Series, and Rossi A Series worm drives across conveyors, packaging machinery, food processing, and material handling systems.
Technical Specifications
| Featured Model | W 63 U 1/19 P80 B5 (Size 63, Universal Mount, Ratio 1:19, IEC 80 B5 Flange) |
|---|---|
| Brand / Manufacturer | Bonfiglioli Riduttori S.p.A. (Italy) |
| Product Line | VF Series (Rounded Body) & W Series (Cubic Rigid Body) |
| Size Range Covered | VF 27, VF 30, VF 44, VF 49, VF 130, VF 150, VF 185, VF 250 / W 63, W 75, W 86, W 110 |
| Nominal Output Torque | 13 Nm to 7,100 Nm (Single Reducer) / Up to 12,000 Nm (Double Worm Combination) |
| Single Stage Ratios | i = 7, 10, 12, 15, 19, 24, 30, 38, 45, 64, 80, 100 |
| Combination Options | VF/VF & W/VF Double Worm (ratios to 1:3000), WR Helical-Worm Pre-stage |
| Output Shaft Options | Hollow Shaft with Keyway (Standard), Plug-in Single/Double Solid Shaft, Torque Arm |
Documentation & Resources
Bonfiglioli VF & W Series Modular Architecture Matrix
Full modular layout guide for Bonfiglioli VF and W worm gearboxes. Review housing materials, torque limits, supported IEC motor input flanges, and output shaft diameters:
| Gearbox Model & Design Type | Housing Material | Max Torque (Nm) | Standard Hollow Shaft Bore (mm) | Supported IEC Input Flanges |
|---|---|---|---|---|
| VF 27 / VF 30 / VF 44 / VF 49 (Compact Rounded) | Die-Cast Aluminum | 13 Nm - 230 Nm | 14 mm / 18 mm / 25 mm | IEC 56, IEC 63, IEC 71 (B5 / B14) |
| W 63 / W 75 / W 86 (Cubic Universal Body) | Die-Cast Aluminum | 190 Nm - 500 Nm | 25 mm / 28 mm / 35 mm | IEC 71, IEC 80, IEC 90, IEC 100 (B5 / B14) |
| W 110 / VF 130 / VF 150 (Heavy Industrial) | Heavy Cast Iron | 850 Nm - 2,000 Nm | 42 mm / 45 mm / 50 mm | IEC 90, IEC 100, IEC 112, IEC 132 (B5) |
| VF 185 / VF 250 (Extra Heavy Industrial) | Heavy Cast Iron | 3,600 Nm - 7,100 Nm | 60 mm / 70 mm | IEC 132, IEC 160, IEC 180, IEC 200 (B5) |
| VF/VF & W/VF Series (Double Worm Combination) | Aluminum / Cast Iron | Up to 12,000 Nm | Combination Specific | Ratios up to 1:3000 for low RPM drives |
Motovario NMRV & SEW S Series to Bonfiglioli Direct Replacement Guide
Bonfiglioli VF and W worm gearboxes adhere strictly to international IEC mounting standards, making them 100% physically interchangeable with competing worm speed reducers (Motovario NMRV, SEW S/WA series, Rossi A series):
| Competitor Model (Motovario / SEW / Rossi) | Hollow Shaft Diameter | Bonfiglioli 1-to-1 Equivalent Model | Max Torque Rating | Mechanical Mounting Compatibility Notes |
|---|---|---|---|---|
| Motovario NMRV 030 / NMRV-P 030 | 14 mm shaft | Bonfiglioli VF 30 P1 100% Drop-In | 35 Nm | Identical foot bolt hole centers, B5/B14 motor flange, and shaft height. |
| Motovario NMRV 040 / NMRV-P 040 | 18 mm shaft | Bonfiglioli VF 44 U 100% Drop-In | 90 Nm | Direct 1:1 replacement. Fits standard IEC 63 / IEC 71 motor inputs. |
| Motovario NMRV 050 / NMRV-P 050 | 25 mm shaft | Bonfiglioli VF 49 U / W 63 U 100% Drop-In | 190 Nm | Cubic housing matches NMRV 050 torque arm and foot mounting dimensions. |
| Motovario NMRV 063 / SEW WA30 | 25 mm / 28 mm | Bonfiglioli W 63 U 100% Drop-In | 250 Nm | Universal M10 mounting holes on all sides. Plug-in solid shaft available. |
| Motovario NMRV 075 / SEW S47 / SA47 | 28 mm / 30 mm | Bonfiglioli W 75 U 100% Drop-In | 320 Nm | Direct drop-in replacement for conveyor drives. Fits IEC 80/90 B5 motors. |
| Motovario NMRV 090 / SEW S57 / SA57 | 35 mm shaft | Bonfiglioli W 86 U 100% Drop-In | 500 Nm | Heavy-duty aluminum housing. Matches 35mm hollow shaft and torque arm. |
| Motovario NMRV 110 / SEW S67 / SA67 | 42 mm shaft | Bonfiglioli W 110 U 100% Drop-In | 850 Nm | Cast iron heavy-duty housing. Direct replacement for primary conveyor drives. |
Expert Selection & Retrofit Engineering Notes
When replacing worn Motovario NMRV, SEW S Series, or Rossi A Series worm gearboxes on existing production lines, switching to Bonfiglioli VF/W units guarantees 100% exact physical mounting alignment, output shaft compatibility, and high mechanical efficiency without modifying mounting brackets or motor wiring. Simply supply us with your existing gearbox nameplate code (e.g., W 63 U 1/19 P80 B5) or shaft dimensions, and our technical team will deliver a 100% compliant replacement specification and proposal.
Core Benchmark Model Standard Configurations
- VF 27 P1 1/20 P56 B5
- VF 30 P1 1/30 P63 B5
- VF 44 U 1/14 P63 B5
- VF 44 U 1/35 P71 B14
- VF 49 P1 1/18 P71 B5
- VF 49 U 1/45 P80 B5
- W 63 U 1/19 P80 B5
- W 63 U 1/30 P90 B5
- W 75 U 1/24 P80 B5
- W 75 U 1/40 P90 B5
- W 86 U 1/15 P90 B5
- W 86 U 1/30 P100 B5
- W 110 U 1/40 P112 B5
- VF 130 P1 1/50 P132 B5
- VF 150 P1 1/60 P132 B5
- VF 185 P1 1/80 P160 B5
- W/VF 63/44 Double Worm
- W/VF 86/49 Double Worm
- WR 63 Helical-Worm Unit
- WR 86 Helical-Worm Unit
