Over 125 years have elapsed since John Holroyd & Co. Ltd started to produce machine tools and gears and throughout this period the name Holroyd has been associated with the highest quality in both of these fields.

In the production of worm gearing the unique Holroyd gear form is widely respected for its performance and reliability in a wide variety of drives, ranging from the screw down mechanisms in steel mills to the motion actuators of robots used in the construction of microchips.

To improve the performance of wormwheel hobbing machines, Renold developed the Precision Dual Lead Backlash Adjustable Wormgear Form which is now widely used in rotary tables, cutter drives and machine tool positioning mechanisms.

Approvals

Renold Gears is BS EN ISO 9001:2000 approved.  All products are designed and manufactured within this Quality Assurance System.

Unrivalled Accuracy

Renold utilise inspection equipment which is unique in its ability to provide our clients with records of pitch, profile and transmission graphs.

Investment in new state-of-the-art gear production  equipment has ensured that years of design and manufacturing experience is also backed up by the very latest in CNC machinery and work methods and supported by modern CAD systems for both product and tooling designs.

Renold precision wormgears, although manufactured to BS721 exceed the highest standard, class A.  They have also been proven to match and surpass DIN 3962 grade 2.  This assures that the accuracy and repeatability of these gears are to the highest standards.

Applications

• Mining, coal cutting machines, axle drives
• Civil engineering and building, cranes, trucks and dumpers
• Steel and foundry plant, screwdown, wire and tube drawing
• Automotive, oil pump, fuel injection
• Power, coal crusher, steam turbines