Purchase now: Bonfiglioli VF 44 P1 70 P63 B5 B3 Gearbox
Purchase now: Atlantechdrives provides you the VF 44 P1 70 P63 B5 B3, a highly versatile, ultra-compact fractional 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 an extremely high 70:1 reduction ratio. This massive torque multiplication factor makes it the ultimate solution for ultra-slow moving conveyor belts, heavy-duty rotary indexing tables, precision positioning machinery, and automated dosing systems where very slow, deliberate movement is required. 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 fractional IEC P63 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 70 P63 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 70 P63 B5 B3
- Gearbox Series: VF (Ultra-Compact Aluminum Worm Gear)
- Frame Size: 44 (Compact fractional size)
- Output Configuration: P1 (Standard foot mounting and hollow shaft)
- Reduction Ratio (i): 70:1 (Ultra-low output speed, extreme torque)
- Motor Interface: IEC P63 frame
- Motor Flange Type: B5 (Large standard mounting flange)
- Mounting Position: B3 (Horizontal, foot mounted)
Expert Tips: Absolute 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 70:1 reduction ratio places the VF 44 firmly into the category of absolute static irreversibility (self-locking). The lead angle of the internal steel worm thread is incredibly shallow. This precise geometry ensures that when the electric motor is turned off, the internal friction angle is so steep that virtually no amount of kinetic load on the output shaft can back-drive the gearbox. It acts as a highly effective, natural mechanical brake, securely holding suspended loads or heavy inclined conveyors perfectly stationary. However, while it is statically self-locking, extreme machine vibrations can sometimes induce micro-slippage over time. For critical safety lifts involving suspended weights, regulatory standards still demand the installation of an external failsafe electromechanical brake on your AC motor.
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 P63 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, absolutely. A 70:1 worm gear generates a massive amount of sliding friction, converting a significant portion of the electrical energy into radiant heat. The aluminum casing is specifically designed with cooling fins to dissipate this energy and will run hot to the touch during continuous 24/7 duty cycles.
Do you need more references from this brand? Explore our full catalog of Bonfiglioli here.
If your material handling system requires a primary reduction stage with a higher torque capacity and a universal housing, consider upgrading to the heavy-duty W 75 U 100 P71 B5 B3 gear reducer.
