Jacobs 3B 5/8 PB CHUCK & K3 KEY
The JACOBS plain bearing chuck is the world’s most widely used for medium or heavy-duty portable, bench, or floor mounted power tools. This industrial quality chuck, with fully hardened and ground working components, offers exceptionally high accuracy, gripping power, and durability. Both heavy and medium duty models are available in a wide range of capacities for use on threaded or taper mounted spindles.
Thread mounted – 5/8-16
Fluted sleeve standard on all models
T.I.R. .004 In. maximum at half capacity
Each chuck 100% inspected for performance and precision
Through-hardened sleeve teeth, plus hardened nose and keyholes provide outstanding wear resistance
One-piece sleeve eliminates crack between driving teeth often found in other designs
Jaws center-ground for absolute straightness and alignment