R8 Drill Chuck Arbors

R8 Drill Chuck Arbors

R8 drill chuck arbors are designed to provide a precise and rigid connection between R8 spindle systems and Jacobs taper drill chucks. These arbors mount directly into R8-equipped milling machines, allowing accurate drilling operations while maintaining proper alignment between the spindle and the drill chuck.

Commonly used in vertical mills, knee mills, and other R8 spindle machines, R8 drill chuck arbors offer excellent concentricity and dependable performance for both production and general machining applications. Precision-ground taper surfaces ensure consistent seating and repeatable accuracy in demanding shop environments.

Tolerances & Specifications

Shank to taper runout < 0.0001"

R8 taper mount

Precision ground Jacobs taper

Manufactured from 42CrMo alloy steel

Compatible with all R8 spindle systems
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