Involute Gear Hobs

Single Thread Involute Hobs

Single Thread Involute Hobs use straight angled sides for generating gears for maximum accuracy on gear hobbing machines.

They are normally specified for

・Processes where no subsequent tooth finishing operations are required
・Where improved accuracy before tooth shaving operations is required

Multiple Thread Involute Hobs

These hobs are designed to increase productivity of the hobbing process. Advancements in hob manufacturing has improved the quality to allow finish hobbing with a multiple thread hob. Depending on the lead angle, they will be either straight or spiral gashed.

Involute Spline Hobs

Involute Spline Hobs have straight sides teeth like a gear hob, and are usually of stub tooth depth. They are made in single or multiple thread designs.

Diametral Pitches

・2.5/5 to 128/256

Pressure Angles

・30°
・37.5°
・45°

Worm Gear Hobs

Worm Gear Hobs are part of specific tools that match the worm shaft with sharpening allowance. This plunge cutting tool is manufactured in shell or shank designs with straight or spiral gash. Lead angles up to 45° are available.

Solid Carbide Hobs

Solid carbide hobs can be used in shell or shank design to cut gears with or without coolant, and are available in shell style with keyway or end drives, and various shank designs to fit most hobbing machines. Both “K” and “P” grade material is offered depending on application.