A keyed Yukiwa EDM drill chuck.

Chucks and Precision

A chuck’s ability to hold an electrode with stability forms the basis of an EDM drilling apparatus. A chuck lacking precision only compounds defects in its electrode and guide, and does not wear down uniformly, reducing its lifespan. Chucks with keys allow for a much tighter grip than keyless chucks.

Product Code and Description

Industrial Keyed Drill Chucks

S4-0JT
Capacity: 0.3mm-4.0mm (0.012″-0.157″) Jacobs Taper: JT0

S6.5L-1JT
Capacity: 0.5mm-6.5mm (0.020″-0.256″) Jacobs Taper: JT1

S4B 5/16-24
Capacity: 0.35mm-4.0mm (0.014″-0.157″) Thread: 5/16-24

S6.5LBA 3/8-24
Capacity: 0.5mm-6.5mm (0.020″-0.256″) Thread: 3/8-24

F6.5LBA 3/8-24
Capacity: 0.5mm-6.5mm (0.020″-0.256″) Thread: 3/8-24

Stainless Steel Keyed Drill Chucks

SL4
Capacity: 0.3mm-4.0mm (0.012″-0.157″) Jacobs Taper: JT0

SL6.5EL
Capacity: 0.5mm-6.5mm (0.020″-0.256″) Jacobs Taper: JT1

400 N040 G01 0
Capacity: 0.3mm-4.0mm (0.012″-0.157″) Thread: 5/16-24
Thru-hole Diameter: 5.5mm (.217″)

400 N074 G02 0
Capacity: 0.6mm-7.4mm (0.024″-0.291″) Thread: 5/8-24
Thru-hole Diameter: 7.5mm (.295″)

Adaptors

For our chucks with female jacobs tapers, we offer male and female chuck adaptors. Our adaptors have a male jacobs taper and provide a snug fit to maintain accuracy in drilling. Our chuck adaptors also have through-holes with clearance up to 6 mm. Our adaptors give you the flexibility to choose whichever chuck suits your electrodes, not your machine.

A chuck adaptor with jacobs taper.