Non-Involute Gear Hobs

Sprocket Hobs

Sprocket Hobs are specially designed to produce accurate finishes on several chain sprocket tooth forms. Like spline hobs, they produce the correct tooth form at only one depth of cut, so tooth form accuracy is extremely important. Sprocket hobs are available in single and multiple thread designs. We also supply hobs for a wide variety of belt drives to cut both the sprocket teeth and belt molds.

Special Form Hobs

Special form hobs are produced for a wide variety of tooth forms such as square shafts, as well as conjugate forms for pump gear that transmit motion. Generally, these special hobs generate the correct tooth form at only one depth, so accuracy is critical.

Straight Key Spline Hobs

Straight or tapered key spline hobs have specially curved tooth forms and are made in single and multiple thread types. They are used to produce at only one depth of cut.

Straight key spline hobs with lugs have a special feature that can be included on the hob to produce root clearance when necessary. Other special features, such as clearance grooves for shoulder clearance, can be added to any of the spline hobs.