CAT Taper to Jacobs Taper Drill Chuck Arbors

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CAT 40

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U.S.–Mexico–Canada Agreement (USMCA) Qualifying

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EAR99

For Drill Chuck Jacobs Taper Diameter

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12 Products

CAT Taper to Jacobs Taper Drill Chuck Arbors

Adapt machines with CAT taper spindles to hold Jacobs taper drill chucks. These arbors are made of hardened steel to resist wear. Their shank is precision ground to the industry standard AT3 tolerance for a secure fit that minimizes runout in your machine spindle. They meet ASME standards for CAT spindles to ensure compatibility. The shank has internal threads for a retention knob, so you can connect them to your machine’s drawbar system.

Strike the top of the shank to seat these arbors onto a drill chuck. To separate them, use a drill chuck removal tool.

For Drill Chuck Taper No.	Overall Lg.	Projection	Material	Specs. Met		Each



CAT 40	Jacobs 2, Jacobs 2s	5 1/16"	1 1/2"	Hardened Steel	ASME B5.50	9251N11	000000


CAT 40	Jacobs 3	5 13/32"	1 1/2"	Hardened Steel	ASME B5.50	9251N14	00000
CAT 40	Jacobs 4	5 27/32"	1 1/2"	Hardened Steel	ASME B5.50	9251N15	00000
CAT 40	Jacobs 5	6 1/16"	1 1/2"	Hardened Steel	ASME B5.50	9251N16	000000
CAT 40	Jacobs 6	5 3/16"	1 1/2"	Hardened Steel	ASME B5.50	9251N13	00000
CAT 40	Jacobs 33	5 3/16"	1 1/2"	Hardened Steel	ASME B5.50	9251N12	00000
CAT 50	Jacobs 2, Jacobs 2s	6 3/8"	1 1/2"	Hardened Steel	ASME B5.50	9251N17	000000
CAT 50	Jacobs 3	6 23/32"	1 1/2"	Hardened Steel	ASME B5.50	9251N21	000000
CAT 50	Jacobs 4	7 5/32"	1 1/2"	Hardened Steel	ASME B5.50	9251N22	000000
CAT 50	Jacobs 5	7 3/8"	1 1/2"	Hardened Steel	ASME B5.50	9251N23	000000
CAT 50	Jacobs 6	6 1/2"	1 1/2"	Hardened Steel	ASME B5.50	9251N19	000000


CAT 50	Jacobs 33	6 1/2"	1 1/2"	Hardened Steel	ASME B5.50	9251N18	000000