Accupro CY01004000MSC Drill Chuck JT1 Tapered Mount 3/8 Inch

Product Description

The ACCUPRO CY01004000MSC is a keyed drill chuck designed for tapered-mount spindles using a JT1 taper. It accepts drill bit shanks from 1/32 inch up to 3/8 inch (0.0394 to 0.3750 decimal inch), making it suitable for light-duty to mid-range drilling operations. The chuck body is constructed from steel and uses a plain bearing design. Closed length is approximately 2.362 inches and open length is approximately 2.008 inches, with a sleeve diameter of approximately 1.457 inches. A K34 key is included. This chuck is installed by machinists, maintenance technicians, and tool-room professionals working with drill presses and compatible machine spindles.

This chuck fits bench-top and floor-standing drill presses, milling machines, and other equipment with a JT1 Jacobs taper spindle. The keyed design provides positive bit retention under load, making it a practical choice for production environments and job-shop applications where consistent clamping force is required. It is suited for drilling ferrous and non-ferrous materials in both shop and light industrial settings.

Key Features

• Capacity range: 1/32 inch to 3/8 inch (0.0394 to 0.3750 decimal inch)
• JT1 Jacobs taper mount for positive spindle seating
• Keyed chuck with K34 key included for secure bit clamping
• Steel chuck body with plain bearing construction
• Sleeve diameter: approximately 1.457 inches (37 mm)
• Compact closed length of approximately 2.362 inches (60 mm)

Compatibility

Designed for use with drill press and machine tool spindles fitted with a JT1 Jacobs taper. Verify spindle taper specification before installation.

Installation Notes

Installation should be performed by a qualified machinist or maintenance technician. Power down and lock out the machine at the disconnect before removing or seating any chuck. The chuck is driven onto the spindle taper using a soft mallet or arbor press; never use the spindle itself to force the chuck on by running the machine. Inspect the taper surfaces for burrs or debris and clean thoroughly before seating to ensure full contact and concentricity.