Super Chucks | McMaster-Carr

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For Jacobs Chuck Manufacturer Model Number

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EAR99

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Component

Jaw and Nut Set

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Sleeve

Service Kit Number Included

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28 Products

Parts for Jacobs Keyed Drill Chucks

Replace worn components to extend the life of your Jacobs keyed drill chuck.

Service kits are for heavy duty ball bearing chucks. Each kit includes jaws, split nuts, a thrust bearing, and a washer. When choosing from these kits, check the nose of your chuck for a service number. Older chucks don't have a service kit number—choose kits with a number not included.

Jaw and Nut Sets

For Jacobs Chuck Manufacturer Model Number		Each
3A, 3B 1/2, 3B 5/8, 3KD, 3PD	2812A86	000000
33, 33BA 3/8, 33BA 1/2, 33BA 5/8, 33KD, 33KDS, 3326A, 3326E	2812A87	00000
34-02, 34-06, 34-33, 34-33C, 34PD	2812A88	00000
36, 36B 5/8, 36B 3/4, 36KD, 36PD	2812A89	000000

Sleeves

For Jacobs Chuck Manufacturer Model Number		Each
11N	2815A25	000000
14N	2815A26	00000
16N	2815A27	000000
18N	2815A28	000000
33, 33BA 3/8, 33BA 1/2, 33BA 5/8, 33KD, 33KDS, 3326A, 3326E	2812A92	00000
34-02, 34-06, 34-33, 34-33C	2812A93	00000
36, 36B 5/8, 36B 3/4, 36KD, 36PD	2812A94	00000

Service Kits

	Service Kit Number Included		Service Kit Number Not Included
For Jacobs Chuck Manufacturer Model Number		Each		Each
8 1/2N	2815A41	0000000	______	00
11N	2815A42	000000	2815A52	0000000
14N	2815A43	000000	2815A53	000000
16N	2815A44	000000	2815A54	000000
18N	2815A45	000000	2815A55	000000
20N	2815A46	000000	2815A56	000000

Extra-Grip Taper-Mount Keyed Drill Chucks

Jacobs Taper Mount

A ball-bearing design provides increased gripping force to keep bits from slipping, which allows these chucks to take on high-torque drilling applications. Also known as super chucks, they are excellent for use on high-speed drilling machines, milling machines, jig borers, and lathes. All require an arbor (sold separately).

For Bit Shank Size		Chuck Key		Jacobs Taper
Inch	mm	Included	Number	Number	Drive Type	Body Material	Jaw Material	Manufacturer Model Number		Each
Jacobs
0.04"-1/4"	1-6.5	Yes	K30	2	Standard	Steel	Steel	8 1/2N	2815A11	0000000
0.04"-3/8"	1-10	Yes	K32	2	Standard	Steel	Steel	11N	2815A12	000000
0.04"-1/2"	1-13	Yes	K3	3	Standard	Steel	Steel	14N	2815A13	000000
1/8"-5/8"	3-16	Yes	K4	3	Standard	Steel	Steel	16N	2815A14	000000
1/8"-3/4"	3-19	Yes	K4	4	Standard	Steel	Steel	18N	2815A15	000000
3/8"-1"	10-25.4	Yes	K5	5	Standard	Steel	Steel	20N	2815A16	000000

Replacement Parts
Service Kit without Service Kit Number for Drill Chuck 18N	2815A55	Each	0000000
Service Kit with Service Kit Number for Drill Chuck 18N	2815A45	Each	000000
Sleeve for Drill Chuck 18N	2815A28	Each	000000
Service Kit with Service Kit Number for Drill Chuck 14N	2815A43	Each	000000
Sleeve for Drill Chuck 14N	2815A26	Each	00000
Service Kit without Service Kit Number for Drill Chuck 14N	2815A53	Each	000000
Service Kit without Service Kit Number for Drill Chuck 16N	2815A54	Each	000000
Sleeve for Drill Chuck 16N	2815A27	Each	000000
Service Kit with Service Kit Number for Drill Chuck 16N	2815A44	Each	000000
Service Kit without Service Kit Number for Drill Chuck 20N	2815A56	Each	000000
Service Kit with Service Kit Number for Drill Chuck 20N	2815A46	Each	000000
Sleeve for Drill Chuck 11N	2815A25	Each	00000
Service Kit without Service Kit Number for Drill Chuck 11N	2815A52	Each	000000
Service Kit with Service Kit Number for Drill Chuck 11N	2815A42	Each	000000
Service Kit with Service Kit Number for Drill Chuck 8 1/2N	2815A41	Each	000000