Purchase now: Bonfiglioli W 63 U 25 P80 B14 B3 Gearbox
Purchase now: Atlantechdrives provides you the W 63 U 25 P80 B14 B3, a robust, industrial-grade universal worm gear reducer engineered by the power transmission experts at Bonfiglioli. As part of the heavy-duty W Series, this gearbox is specifically designed to bridge the gap between lightweight aluminum drives and massive cast-iron reducers. It features a highly rigid unibody housing that maintains perfect internal gear alignment under extreme radial and axial shock loads. The «U» designation indicates a Universal housing geometry, machined precisely on multiple faces to provide unparalleled mounting flexibility. Configured with a highly efficient 25:1 reduction ratio and designed to accept a standard IEC P80 electric motor via a compact B14 face-mount flange, it acts as a highly reliable 90-degree torque multiplier. It is heavily utilized in packaging conveyors, industrial mixers, material handling lifts, and continuous extrusion machinery.
Technical Specifications of the W 63 U 25 P80 B14 B3
The W 63 utilizes a profile-ground steel worm shaft paired with a highly wear-resistant, centrifugally cast bronze worm wheel. This time-tested metallurgical combination ensures optimal sliding friction, reducing operational noise and extending the lifespan under heavy continuous duty cycles.
- Part Number: W 63 U 25 P80 B14 B3
- Gearbox Series: W (Universal Worm Gear Reducer)
- Frame Size: 63
- Housing Type: U (Universal, multi-face mounting)
- Reduction Ratio (i): 25:1
- Motor Interface: IEC P80 frame
- Motor Flange Type: B14 (Compact face mount)
- Mounting Position: B3 (Horizontal, foot mounted)
Expert Tips: Dynamic Reversibility and Ratio Selection
Understanding the physics of worm gear ratios is critical for safe machine design. Expert Tip: Because this specific W 63 gearbox features a mid-range 25:1 reduction ratio, the lead angle of the internal steel worm thread is relatively steep. This makes the gearbox highly efficient (minimizing heat loss), but it also places it firmly in the category of dynamic reversibility. This means the load can easily «back-drive» the gearbox when the electric motor is turned off. It will not act as a mechanical brake. If your application involves a vertical lift, an inclined conveyor, or holding a suspended weight, you must never rely on a 25:1 worm gear to hold the load. You must install an external failsafe electromechanical brake on your AC motor to ensure safety and prevent free-falling machinery.
Installation Advice: B14 Flange and Vent Plugs
This model utilizes a B14 motor input flange. Unlike the massive B5 flange, the B14 is a «face-mount» design where the mounting bolts pass directly through the gearbox casting and thread into the face of the electric motor. This significantly reduces the outer radial footprint of the assembly, making it perfect for tight machine guards. Furthermore, this unit is explicitly configured for the B3 mounting position (horizontal, feet down). To prevent expanding hot air from blowing out the oil seals, Bonfiglioli installs a breather/vent plug at the highest point of the gearbox based on this specific B3 orientation. Always verify the breather plug location before running the machine.
Frequently Asked Questions (FAQs)
Q: What size motor shaft does the P80 B14 input accept?
A: A standard IEC 80 frame motor features a 19mm diameter shaft. The B14 flange has a 120mm outer diameter. The gearbox input quill is perfectly matched to these standardized dimensions.
Q: Can I use standard mineral oil in the W 63?
A: No. High-performance worm gears require specific ISO VG synthetic gear oil to handle the extreme extreme pressure (EP) sliding friction. Using standard mineral oil will cause rapid overheating and premature bronze wheel wear.
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