Buy now MVF 49 P1 10 19/140 B3 PV Bonfiglioli Worm Gearbox i=10

Product Overview: Bonfiglioli MVF 49 P1 10 B3 PV

The Bonfiglioli MVF 49 P1 10 19/140 B3 PV is a high-performance worm gear unit designed for industrial power transmission. Part of the globally recognized VF/MVF series, this size 49 unit is engineered to provide a robust right-angle drive solution. The «PV» designation indicates the inclusion of Viton (FKM) oil seals, making this specific variant ideal for high-temperature environments or applications involving aggressive synthetic lubricants.

Technical Configuration and Engineering

This gearbox features a 10:1 reduction ratio, offering high mechanical efficiency and smooth torque delivery. It is designed with a P1 input configuration (19/140 dimensions), ensuring a rigid and precise connection to the motor. The B3 mounting position refers to its horizontal foot-mount execution. The housing is made of high-pressure die-cast aluminum, providing an excellent strength-to-weight ratio and superior heat dissipation, which is critical for extending the life of the internal components.

Key Characteristics

  • Frame Size: 49.
  • Gear Ratio (i): 10.
  • Sealing: PV (Viton/FKM Seals for high resistance).
  • Input Connection: 19mm shaft / 140mm flange.
  • Mounting: B3 (Horizontal).
  • Housing: Aluminum with optimized cooling fins.
  • Lubrication: Typically pre-filled with long-life synthetic oil.

Operational Benefits

The MVF 49 utilizes a precision-ground steel worm and a high-quality bronze alloy wheel. The inclusion of Viton seals (PV) ensures that the unit maintains its integrity even in the presence of thermal fluctuations, preventing oil leaks and protecting the internal gears from environmental contaminants. This makes it a preferred choice for food processing, chemical plants, and heavy-duty logistics conveyors.

Feature Specification
Efficiency High mechanical throughput
Backlash Low standard industrial tolerance
Thermal Capacity Enhanced via aluminum fins

Maintenance Insights

Due to the factory-filled synthetic lubricant and the high-grade PV seals, this unit is virtually maintenance-free. However, for continuous S1 duty cycles in high ambient temperatures, we recommend periodic visual inspections of the oil levels and seal condition to ensure maximum uptime.


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If your heavy-duty material handling setup requires a primary transmission unit with higher load capacities, consider integrating the robust W 75 U 15 P90 B5 B3 universal gear reducer.

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