Hofmann Engineering specialises in the design and manufacture of all styles of industrial gearboxes, including helical, bevel-helical, double-helical, planetary, self-aligning and custom gearboxes to suit your requirements. We offer a range of in-house heat treatment options including case carburising, quench & tempering and induction hardening. Hofmann Engineering has a range of finish machining options including finish grinding and hard-cutting, to achieve excellent quality levels required.

Hofmann Engineering will tackle any repair presented from reclaimers to positioner drives, agitator’s to exciters, mill drives to conveyors to mention only a few, not only do we overhaul to the manufactures specification we have improved the original design on many occasions thus increasing the life and reliability.

UPGRADE YOUR EXISTING GEAR DRIVES
More power and longer life, quieter operation, leak proof sealing and re-ratio.

ADVANCEMENT THROUGH TECHNOLOGY
Improved case hardened and ground gearing, computerised gear geometry and profile optimisation, high capacity bearings and improved sealing.

Hofmann Engineering’s Self Aligning Drives automatically maintain 100% contact 100% of the time through all loading stages, regardless of:
• Mating gear axial run out
• Foundation movement and temperature expansion changes
• Deflections and load variations

APPLICATIONS
• Mills, kilns, dryers and car dumpers
• Draglines, shovels, winders and slewing drives
• Any gear drive where self aligning is required to reduce maintenance

DESIGNED OR REVERSE ENGINEERING AND MANUFACTURED UNDER ONE ROOF

DESIGN
The first step of 5-axis machining is to create a 3D model of the bevel or worm gear. A 3D model to DIN, AGMA or Gleason standards can be created for a new gear using outputs from state-of-the art engineering calculation programs. For replacement gears, a 3D model of the existing design can be acquired from the CMM and then modified to solve the problem which caused the gear to fail or to optimise future operation. Tooth modification can also be optimised to give quiet running gears.

INSPECTION
All gearing must be inspected to ensure that the quality required has been achieved. Specialist Coordinate Measuring Machines are capable of inspecting complicated gearing such as spiral bevel gears, helical bevel gears, worm wheels and worm shafts.

CUTTING
An extensive collection of 5-axis machines to cut spiral, helical and straight bevel gears and worm wheels. Unique software is used to optimise the CAM program for the manufacture of spiral, helical and straight bevel gears and worm wheels.

WORM GRINDING
Worm shafts are ground on form grinding machines to achieve ultimate accuracy and surface finish. After grinding, the gear accuracy is preliminarily checked on the machine prior to final inspection on the CMM and mesh testing if required.

HEAT TREATMENT
Gears up to 1.87m diameter can be case carburised, and gears up to 4m diameter can be full contour, tooth-by-tooth induction hardened.

WORM MESH CONTACT INSPECTION
A mesh test of worm wheel and worm shaft is conducted to confirm contact accuracy.

TESTING
Bevel gears and worm wheels and shafts can be tested in their assembled gearboxes under load to ensure that operational specifications have been achieved.