Examples of Our Arbors and Mandrels
Collet Arbors / Collet Mandrels
Collet arbors are also called collet mandrels or expanding mandrels. When the application requires a large expansion range, and we frequently recommend this cost-effective type of arbor. Drewco designs collet arbors with significant versatility, making our collet arbors a convenient, efficient, and cost-effective way to run different part sizes.
Hydraulic Expanding Arbors
Drewco creates highly accurate hydraulic arbors. This most accurate type of arbor allows for considerable precision capable of holding up to .0001 TIR. Drewco designs hydraulic arbors to hold gears, for use in tooth cutting, milling and inspection with proven dependability, and uniform expansion or compression. We offer highly competitive pricing, short lead time and an in-house refurbishing program.
Hob arbors, sometimes called hobbing fixtures, hold hob cutters while they cut the gear tooth profile. Drewco’s specialty in tight tolerance grinding allows us to create a tight clearance fit with minimal runout. Our custom hob arbors can be designed fit your hob machine through either, a pilot diameter, a cat taper or an HSK connection.
The shaft of a solid arbor is ground to the clearance fit of the bore diameter of the part being held. This clearance can be as little as 0.0002” depending on the tolerance of the bore diameter and the accuracy required. Solid workholding arbors can be a useful solution for parts with small-diameter bores, where the small-bore diameter might prohibit using an expanding arbor /mandrel.