Description
Pro-Series 3701-4671 0-1/2″ R8 Integrated Keyless Drill Chuck is a precision drill chuck designed for high-performance drilling with a convenient keyless operation. The integral R8 shank provides enhanced stability and eliminates the need for a separate arbor, reducing the risk of slipping during use. Engineered with superior craftsmanship, this chuck delivers smooth operation, long-lasting durability, and reliable performance for demanding machining tasks. The 3-jaw keyless design allows for quick and easy opening and closing of drill bits without any tools, ensuring efficient workflow in any workshop or industrial setting. With a total indicated runout (TIR) of <=0.002", this chuck guarantees precision drilling every time.
Features:
- Integral R8 shank design for stability and elimination of arbor slippage.
- Keyless 3-jaw mechanism allows for tool-free opening and closing of drill bits.
- Total Indicated Runout (TIR) <= 0.002" for precise drilling operations.
- 7/16″-20 drawbar end for secure mounting in compatible machines.
- Compact design more stable than traditional chuck and arbor combinations.
Benefits:
- Provides stable, accurate, and repeatable drilling performance.
- Keyless operation saves time and increases workflow efficiency.
- Durable construction ensures long service life and reliability.
- Eliminates chuck slipping issues common with combination arbors.
- Ideal for professional machinists, industrial workshops, and demanding drilling tasks.
Technical Specifications:
- Model: 3701-4671
- Chuck Capacity: 0 – 1/2″
- Shank Type: Integral R8
- Drawbar End: 7/16″-20
- TIR (Total Indicated Runout): <= 0.002"
- Material: Precision-engineered steel
- Applications: Precision drilling, machining, and industrial workshop use





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