Helical wormgear unit available in six unit sizes up to 45kW capacity.  Gear unit ratio range up to 300:1 and up to 22000:1 if combined with other Renold helical gear products.

• Variable mounting - design flexibility
• High torque unit - compact design
• Robust construction - suitable for heavy duty applications
• Adaptability - ideal for hostile environments
• Innovative design - allows modular extension of power ratio range
• Motorised and speed reducer versions
• Long life synthetic lubrication
• Hollow output shaft design for direct shaft mounting
• Single and double extension plug-in output shaft for many design options
• Speed reducer version available for drives requiring free standing gear unit only
• Modular design to allow flange mounting of other Renold gear units increasing ratio and torque capacity range

PM series - PH type - Product Features

• Unique Holroyd tooth form for maximum torque capacity and optimum efficiency.
• Sprag clutch backstop option to prevent drive reversal.
• Heavy duty taper roller bearings fitted for maximum load capacity and long life.
• One piece close grained cast iron gear case for strength and absorption of vibration for quiet running.
• Accepts standard IEC and NEMA motors, B5 and B14 flanges.
• Hardened and profile ground helical gears for quiet running and high efficiency.
• Hollow output sleeve with electron beam welded bronze wormwheel rim for high security under shock load conditions.

PM series, PH type unit has been designed and built to a modular form to allow the combination of other Renold products to extend the torque, ratio and speed range.