The Renold PM/PB Series helical bevel gearboxes are compact and heavy-duty industrial gear units designed for efficient power transmission in demanding applications. The PB type within the PM Series combines helical and bevel gearing to provide high torque output, smooth operation, and excellent efficiency in a right-angle configuration. Available in six unit sizes, the PM/PB Series is designed for flexibility, durability, and modular integration with standard IEC and NEMA motors. With robust cast-iron housings, hardened and ground gearing, and multiple shaft and mounting options, these gearboxes are widely used in conveyors, inclined drives, material handling systems, mining, and other heavy industrial environments.

Key Features

• Compact helical bevel gearbox design for right-angle power transmission
• High torque capacity with compact heavy-duty construction
• Gear ratios up to 160:1 and extendable up to 15,000:1 with modular combinations
• Available in six gearbox sizes
• High efficiency for reduced operating and energy costs
• Hardened and profile-ground helical and spiral bevel gears for smooth and quiet operation
• One-piece close-grained cast-iron housing for strength and vibration absorption
• Heavy-duty taper roller bearings for maximum load capacity and long service life
• Hollow output shaft design for direct shaft mounting
• Optional single and double plug-in output shafts for flexible configurations
• Motorised and speed reducer versions available
• Compatible with standard IEC and NEMA motors with B5 and B14 flanges
• Modular design allows integration with other Renold gear products
• Variable mounting positions for installation flexibility
• Long-life synthetic lubrication for reduced maintenance
• Optional integrated holdback/backstop for inclined conveyor applications
• Suitable for hostile and demanding industrial environments
• Designed for conveyors, material handling, mining, and heavy industrial applications