Rubber-flex® collets

Jacobs® Rubber-Flex® collets outperform conventional split-steel collets in gripping power, accuracy and durabilty.

lathe collets | tap collets | die grinder collets

RUBBER-FLEX® COLLETS

Jacobs® Rubber-Flex® collets outperform conventional split-steel collets in gripping power, accuracy and durabilty.

Unique in design and operation, the Jacobs® Rubber-Flex® Collet can generate two to three times the gripping power of a conventional split-steel collet.

Gripping force is uniform and parallel throughout the collet contact length and not concentrated at the nose or back as is frequently in the with split-steel collets ( see illustration below). Construction is of durable synthetic rubber compound permanently bonded to hardened steel jaw insert surfaces and through-hole. It is unaffected by heat, coolants and cutting compound and retains its flexibility over a long service life as compared to spring tempered metal designs.

**RUBBER-FLEX® COLLETS VS CONVENTIONAL COLLETS**

Conventional split-steel collets provide maximum gripping efficiency only at actual bored or nominal capacity. They loose parallelism when chucking bars even a few thousandths over or under this capacity. This significantly reduces gripping strength and accuracy.	Rubber-Flex® Collets exert uniform gripping pressure throughout the collet contact length (within individual collet capacity ranges) regardless of bar tolerance deviations

Features

•Parallel jaw insert surfaces exert uniform, accurate gripping force up to three times greater than can be achieved with split-steel collets

• Each collet accepts and precisely centers a wide range of both decimal or metric diameters
(within individual capacity ranges) to speed setups and increase machining productivity

• Durable one-piece construction.. Synthetic rubber retains flexibility and resists deterioration from heat, coolants and cutting compounds

• Steel jaw inserts precision ground (after molding process) to assure maximum gripping accuracy (parallelism)> Hardened for greater wear resistance than split-steel collets

• Each collet bore is held concentric to the O.D. tapers, both front and back, to minimize TIR

• Automatically seals tool O.D. to permit coolant flow through tool reducing wear

• Seals collets and machine spindles to protect from abrasive particles and swarf

Lathe Chuck Collets

	• Collets JAC.J910, JAC.J911 and JAC.J912 have a contact length of .90" (23 mm) • All other lathe chuck collets have full length contact

**Lathe Chuck Collets**
Model No	Capacity Range				Contact		Cone	Outside		Clearance		No. of inserts	Weight (oz.)
	Min		Max (A)		Length (B)		Angle (C)	Dia. (D)		Diameter (E)
	(in)	(mm)	(in)	(mm)	(in)	(mm)	(deg)	(in)	(mm)	(in)	(mm)
JAC.J910	0.060	1.5	0.125	3.2	1.74	44.5	26	2.25	57	0.60	15.2	4	0.53
JAC.J911	0.125	3.2	0.250	6.4	1.74	44.5	26	2.25	57	0.60	15.2	6	0.53
JAC.J912	0.250	6.4	0.375	9.5	1.74	44.5	26	2.25	57			6	0.47
JAC.J913	0.375	9.5	0.500	12.7	1.74	44.5	26	2.25	57			8	0.47
JAC.J914	0.500	12.7	0.625	15.9	1.74	44.5	26	2.25	57			10	0.47
JAC.J915	0.625	15.9	0.750	19.1	1.74	44.5	26	2.25	57			10	0.47
JAC.J916	0.750	19.1	0.875	22.2	1.74	44.5	26	2.25	57			12	0.47
JAC.J917	0.875	22.2	1.000	27.9	1.74	44.5	26	2.25	57			16	0.55
JAC.J918	1.000	25.4	1.125	28.6	1.74	44.5	26	2.25	57			20	0.52
JAC.J919	1.125	28.6	1.250	31.8	1.74	44.5	26	2.25	57			24	0.43
JAC.J920	1.250	31.8	1.375	34.9	1.74	44.5	26	2.25	57			24	0.40
JAC.J921*	1.375	34.9	1.500	38.1	1.74	44.5	26	2.25	57			24	0.27
*requires special 1-1/2" nose

rubber-flex tap collet

**TAP CHUCK COLLETS**
Model No	Capacity Range				Contact		Cone	Outside		No. of inserts	Weight (oz.)
	Min		Max (A)		Length (B)		Angle (C)	Dia. (D)
	(in)	(mm)	(in)	(mm)	(in)	(mm)	(deg)	(in)	(mm)
JAC.J116	0.094	2.4	0.177	4.5	0.468	11.9	26	0.590	15.1	6	0 .10
JAC.J117	0.177	4.5	0.256	6.5	0.468	11.9	26	0.590	15.1	8	0.10
JAC.J420	0.176	4.5	0.320	8.1	0.500	12.7	40	0.941	23.9	6	0.20
JAC.J421	0.139	3.5	0.257	6.5	0.500	12.7	40	0.941	23.9	6	0.20
JAC.J422	0.253	6.4	0.383	9.7	0.500	12.7	40	0.941	23.9	6	0.30
JAC.J423	0.090	2.3	0.090	4.6	0.500	12.7	40	0.860	21.8	4	0.30
JAC.J440	0.280	7.1	0.500	12.7	0.630	16.0	45	1.296	32.9	6	0.30
JAC.J441	0.176	4.5	0.383	9.7	0.630	16.0	45	1.296	32.9	6	0.30
JAC.J443	0.110	2.5	0.280	7.1	0.620	15.7	45	1.180	30.0	4	0.30

rubber-flex die grinder collet

**Die Grinder COLLETS**
Model No	Capacity Range				Contact		Cone	Outside		No. of inserts	Weight (oz.)
	Min		Max (A)		Length (B)		Angle (C)	Dia. (D)
	(in)	(mm)	(in)	(mm)	(in)	(mm)	(deg)	(in)	(mm)
JAC.J116	0.094	2.4	0.177	4.5	0.468	11.9	26	0.590	15.1	6	0.10
JAC.J117	0.177	4.5	0.256	6.5	0.468	11.9	26	0.590	15.1	8	0.10

| drill chuck terminology | Rubber-flex® collets | Jacobs taper dimensions

February 2022, March 2020, updated March 2012, November 2009 CSS, March 2007

The descriptions, illustrations, specifications, dimensions, and part numbers are subject to change without notice.

servicing the Canadian provinces and territories of Newfoundland, NF, NL, Nova Scotia, NS, New Brunswick, NB, Prince Edward Island, PEI, PE, Quebec, PQ, QC, Ontario, ON, Manitoba, MB, Saskatchewan, SK, Alberta, AB, British Columbia, BC, Northwest Territories, NT, Nunavut, NU, Yukon, YT, servicing Canadian cities, Toronto, Mississauga, Scarborough, Laval , Montreal, Montréal, Vancouver, Ottawa, Gatineau, Calgary, Edmonton, Québec City, Winnipeg, Hamilton, Kitchener, Cambridge, Waterloo, London, St. Catharines , Niagara, Halifax, Oshawa, Victoria, Windsor, Saskatoon, Regina, Sherbrooke, St. John's, Barrie, Kelowna, Abbotsford, Mission, Sudbury Kingston, Saguenay, Trois-Rivieres, Trois Rivieres, Trois-Rivières, Guelph, Moncton, Brantford, Saint John, Thunder Bay, Peterborough, Ajax, Aurora, Brampton, Brock, Burlington, Caledon, Clarington, Durham Region, Oshawa, Pickering, Whitby, Halton Hills, Milton, Oakville, Mississauga, New market, Richmond Hill, Vaughn, Orangeville, servicing US 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