Holroyd 40″ Gear Hobbing Machine TRT#67

Description

This Holroyd 40″ Gear Hobbing Machine comes from one of the most historically significant names in precision gear manufacturing. Founded in Manchester in 1860, Holroyd invented the thread milling process itself in 1897 and went on to become a world leader in gear cutting technology, including hobbing machines like this one. In 1931, the company set a world record for worm gear efficiency — 98.2%, measured at the UK’s National Physical Laboratory — a record that reportedly still stands today. Still operating from Rochdale, England as PTG Holroyd, the company remains a world leader in precision gear and rotor grinding technology.

Stock No 4222

• Manufactured by Holroyd in the UK
• Max workpiece diameter 40″ / 1,016mm
• Max Spur Gear width 12″/300mm
• Max Pitch in Wormwheel with Hob 1 3/4″ Circular Pitch
• Max Size of Hob 8″ Dia x 9 1/4″ Long
• Power requirement for Drive Motor 7.5hp/415V
• Power Requirement of Elevation Motor 2.5hp/415V
• Machine transport Dimensions 3.4m  x 1.4m x 2.7m High
• Machine Weight 6 Tonne approx
• Comes complete with a large range of change gears