Purchase now: Bonfiglioli VF 44 P1 35 P71 B14 B3 Gearbox
Purchase now: Atlantechdrives provides you the VF 44 P1 35 P71 B14 B3, a highly responsive, ultra-compact worm gear reducer expertly engineered by the global power transmission specialists at Bonfiglioli. Belonging to the highly versatile and lightweight VF Series, this gearbox is the absolute industry standard for space-constrained, 90-degree power transmission applications. This specific unit features a mid-to-high 35:1 reduction ratio. This precise torque multiplication factor makes it the ultimate solution for medium-speed conveyor belts, reliable rotary indexing tables, precision positioning machinery, and automated dosing systems. Configured with a standard «P1» foot-mounted housing, it is pre-configured to seamlessly accept a standard IEC P71 electric motor via a compact B14 face-mount flange. The high-quality die-cast aluminum housing ensures excellent thermal heat dissipation while keeping the overall assembly extremely lightweight, minimizing structural strain on your robotic frames, small agitators, or mobile factory machinery.
Technical Specifications of the VF 44 P1 35 P71 B14 B3
The VF 44 size utilizes a precision-machined, profile-ground steel worm shaft driving a centrifugally cast bronze worm wheel. This time-tested metallurgical pairing guarantees smooth sliding friction and exceptional longevity, providing reliable 24/7 continuous operation.
- Part Number: VF 44 P1 35 P71 B14 B3
- Gearbox Series: VF (Ultra-Compact Aluminum Worm Gear)
- Frame Size: 44
- Output Configuration: P1 (Standard foot mounting and hollow shaft)
- Reduction Ratio (i): 35:1 (Mid-to-high ratio)
- Motor Interface: IEC P71 frame
- Motor Flange Type: B14 (Compact face mount)
- Mounting Position: B3 (Horizontal, foot mounted)
Expert Tips: The Reversibility Transition Zone
When selecting a worm gear, understanding the mechanical properties of your chosen ratio is critical for machine safety and efficiency. Expert Tip: The 35:1 reduction ratio places the VF 44 exactly in the mechanical transition zone between reversibility and self-locking. Ratios below 30:1 are completely reversible, while ratios of 60:1 are strictly self-locking. At 35:1, the gearbox presents high resistance to back-driving, meaning it will likely hold a light load when the motor is off. However, any sudden vibration, mechanical shock, or slight change in the internal oil temperature can break the static friction, causing the load to back-drive the motor. Therefore, if your application involves an inclined conveyor or a suspended vertical load, you must never rely solely on a 35:1 worm gear to act as a fail-safe mechanical brake. You must install an external electromechanical brake on your AC motor.
Installation Advice: B14 Flange Integration
This specific model utilizes a B14 motor input flange. Unlike the massive standard B5 flange, the B14 is a «face-mount» design. 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. The VF 44 is a factory-sealed unit, pre-filled with high-performance synthetic gear oil. It is completely «lubricated for life,» meaning it lacks breather, drain, or fill plugs. When mounting your IEC P71 motor, you must apply a premium anti-seize paste (such as Molybdenum Disulfide) to the solid motor shaft before inserting it into the gearbox input quill. Without this paste, microscopic vibrations will cause fretting corrosion, essentially cold-welding the motor to the gearbox.
Frequently Asked Questions (FAQs)
Q: What does the P1 output designation mean?
A: The P1 designation refers to Bonfiglioli’s standardized housing geometry for the VF series. It indicates that the gearbox housing features standard integral mounting feet and a hollow output shaft bore with a standard keyway.
Q: Will the aluminum casing get hot during continuous operation?
A: Yes. Because a worm gear relies on sliding friction, a portion of the electrical energy is converted into radiant heat. The aluminum casing is specifically designed to run warm or hot to the touch during continuous duty cycles, which is a perfectly normal characteristic.
Do you need more references from this brand? Explore our full catalog of Bonfiglioli here.
For complete drivetrain synchronization in medium-duty industrial applications, this worm gearbox is frequently integrated with the high-performance BN 100LB 4 230/400-50 IP55 electric motor.
