Get now: Bonfiglioli MVF 49 105 P71 B Worm Gearbox
Atlantechdrives provides you the MVF 49 105 P71 B, a high-performance worm gear reducer from the Metric Worm Fleet (MVF) series. This size 49 unit is specifically engineered to provide extreme speed reduction with its 105:1 ratio, making it an ideal choice for heavy-duty industrial automation where high torque and slow, controlled output speeds are required. The P71 input flange ensures a standardized IEC connection, while the «B» configuration provides specific mounting versatility.
- Series: MVF (Metric Worm Gear)
- Size: 49 (Medium frame for high torque)
- Reduction Ratio: 105:1 (High-ratio reduction)
- Input Interface: P71 (IEC 71 frame compatibility)
- Housing Material: Ribbed aluminum for optimal heat dissipation
- Worm Wheel: High-resistance bronze alloy
- Efficiency: Optimized for high-load industrial cycles
Mechanical Architecture of the MVF 49 Series
Get now the MVF 49 105 P71 B to benefit from Bonfiglioli’s advanced gear geometry. The 105:1 reduction ratio is achieved through a precision-engineered worm and wheel set, where the steel worm shaft is case-hardened and ground to sub-micron tolerances. This interacts with a bronze alloy wheel designed to minimize friction and maximize the transmission of force. In a worm gear system with a ratio as high as 105, the sliding contact generates significant heat; therefore, Bonfiglioli utilizes high-pressure die-cast aluminum with an integrated ribbing system to increase the surface area for convective cooling. The P71 input flange is machined to strict IEC standards, ensuring that when coupled with a motor, the axial and radial alignment remains perfect, preventing premature wear on the input oil seals. The internal bearings are oversized to handle the thrust loads generated by the high-ratio reduction, ensuring the gearbox remains silent and vibration-free throughout its service life.
Expert Tips: Thermal Management and Lubrication
When operating a high-ratio unit like the MVF 49 105 P71 B, thermal capacity is often the limiting factor rather than mechanical torque. We recommend using high-quality synthetic oil (ISO VG 320) to maintain a consistent lubricant film between the worm and wheel. Because high ratios involve significant sliding friction, mineral oils can degrade quickly under heat. Furthermore, if your application involves a high duty cycle, ensure the gearbox is installed in a well-ventilated area. If the housing temperature consistently exceeds 80°C, consider using an external cooling fan or a specialized high-temperature seal kit. At Atlantech Drives, we suggest a «run-in» period of 50 hours at reduced load to allow the gear teeth surfaces to achieve their optimal contact pattern, which significantly improves long-term efficiency.
Installation Advice and Universal Mounting
The MVF 49 105 P71 B features a universal mounting design, but it is critical to verify the position of the breather and drain plugs. For vertical mounting (V5/V6 positions), the upper bearings may require specialized splash lubrication or a higher oil level to prevent dry-start wear. When mounting the P71 motor, ensure the shaft is lubricated with a light anti-seize compound; forced assembly can damage the internal snap rings of the gearbox. Always verify that the mounting surface is machined to a flatness of 0.1mm to avoid inducing stress into the aluminum housing, which could lead to micro-fractures during peak torque events.
Series Continuity and Related Components
The MVF 49 105 P71 B is designed to integrate seamlessly with the E71B4 5 THERMISTOR 140C TRI motor from this same batch. Standardizing on the Bonfiglioli ecosystem ensures that the torque limits of the gearbox and the thermal protection of the motor are synchronized, providing a fail-safe industrial drive solution. By maintaining series continuity, you reduce spare part inventory complexity and ensure that all maintenance protocols remain consistent across your machinery.
FAQs
Q: Is the MVF 49 105 P71 B self-locking?
A: At a 105:1 ratio, this unit provides significant static self-locking properties. However, for safety-critical lifting applications, we always recommend a mechanical motor brake to ensure 100% load retention.
Q: What is the benefit of the P71 input flange?
A: It allows for the direct connection of any standard IEC 71 frame motor, making it a modular and easily replaceable component in any automation line.
Do you need more references from this brand? Explore our full catalog of Bonfiglioli here.
