Purchase now: Bonfiglioli VF 44 P1 46 P71 B5 B3 Gearbox
Purchase now: Atlantechdrives provides you the VF 44 P1 46 P71 B5 B3, a highly versatile, ultra-compact worm gear reducer expertly engineered by the global power transmission specialists at Bonfiglioli. Belonging to the lightweight and widely utilized VF Series, this gearbox is the absolute industry standard for space-constrained, 90-degree power transmission applications. This specific unit features a highly specific 46:1 reduction ratio. This strong torque multiplication factor makes it the ultimate solution for slow-moving conveyor belts, heavy-duty rotary indexing tables, precision positioning machinery, and automated dosing systems. Configured with a standard «P1» foot-mounted housing, it provides integral mounting feet and a hollow output shaft for seamless, direct machine integration. It is pre-configured to flawlessly accept a standard IEC P71 electric motor via a large B5 mounting 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 automated frames and mobile factory machinery.
Technical Specifications of the VF 44 P1 46 P71 B5 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 even under substantial torque loads.
- Part Number: VF 44 P1 46 P71 B5 B3
- Gearbox Series: VF (Ultra-Compact Aluminum Worm Gear)
- Frame Size: 44
- Output Configuration: P1 (Standard foot mounting and hollow shaft)
- Reduction Ratio (i): 46:1 (Low output speed, high torque)
- Motor Interface: IEC P71 frame
- Motor Flange Type: B5 (Large standard mounting flange)
- Mounting Position: B3 (Horizontal, foot mounted)
Expert Tips: The Edge of Static Irreversibility
When selecting a worm gear, understanding the mechanical properties of your chosen ratio is critical for machine safety and efficiency. Expert Tip: The 46:1 reduction ratio places the VF 44 right on the theoretical edge of static irreversibility (self-locking). While ratios of 60:1 or 100:1 are strictly self-locking, a 46:1 ratio provides very high resistance to back-driving and will typically hold a static load when the motor is off. However, any sudden machine vibration, mechanical shock, or slight change in the internal oil temperature (which lowers oil viscosity) can break this static friction, causing the load to slowly back-drive the motor. Therefore, if your application involves an inclined safety conveyor or a suspended vertical load, you must never rely solely on a 46:1 worm gear to act as a fail-safe mechanical brake. You must install an external electromechanical brake on your AC motor to guarantee safety.
Installation Advice: B5 Flange and Lubrication
This specific model utilizes a B5 motor input flange, which is a large outer flange design providing excellent rigidity for the motor assembly. The VF 44 is a factory-sealed unit, pre-filled with high-performance synthetic ISO VG 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 severe fretting corrosion, essentially cold-welding the motor to the gearbox.
Frequently Asked Questions (FAQs)
Q: What does the P1 output designation mean for the VF 44?
A: The P1 designation refers to Bonfiglioli’s standardized housing geometry. It indicates that the aluminum housing features standard integral mounting feet at its base 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 even hot to the touch during continuous 24/7 duty cycles, which is a perfectly normal characteristic.
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