Rubber-flex® collets

lathe | tap | die grinder


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  




 


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

 

 

link to tap chuck page




 



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

link to die grinder chuck page




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