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"Nobel" - Extra Heavy Duty 3-Jaw Self-Centering Chucks - Series 31

  • Sizes 21" to 32" in stock
  • For direct mounting on Type A spindle noses
  • Forged steel bodies.
  • Body jaw ways are hardened and ground (21" ~ 32")
  • American Standard two-piece tongue & groove jaws.
  • Special chucks up to 70"

CHUCK SIZE GRIPPING FORCE MAX r.p.m. SOFT JAW
KN (kgf)
21 73 (7400) 950 SJ-155
24 80 (8200) 800 SJ-160
28 83 (8500) 700 SJ-170
32 85 (8700) 550 SJ-170
36 85 (8700) 500 SJ-170

WRENCH SQUARE SIZE
E CHUCK SIZE
19 0.75 21"
22 0.87 24"~36"

Dimensions (mm inch)
CHUCK SIZE SPINDLE SIZE CODE NO A B C D H K R WGT
kg lb
21 A2-11 312114 535 21 152 5.98 152 (160) 6 (6.3) 196.869 7.750 75 3 60 2.36 117.5 4.625 220 484
21 A1-15 312115 535 21 152 5.98 204 8 285.775 11.250 75 3 60 2.36 123.8 4.875 210 462
24 A2-11 312414 610 24 167 6.58 172 (185) 6.77 (7.28) 196.869 7.750 92 3.62 75 2.95 117.5 4.625 325 715
24 A2-15 312415 610 24 167 6.58 241 (259) 9.49 (10.2) 285.775 11.250 92 3.62 75 2.95 165.1 6.500 300 660
24 A1-20 312416 610 24 167 6.58 266 (280) 10.47 (11.0) 412.775 16.250 92 3.62 75 2.95 184.2 7.250 280 616
28 A2--11 312814 710 28 180 7.09 172 (185) 6.77 (7.28) 196.869 7.750 92 3.62 75 2.95 117.5 4.625 465 1023
28 A2-15 312815 710 28 180 7.09 241 (259) 9.49 (10.2) 285.775 11.250 92 3.62 75 2.95 165.1 6.500 440 968
28 A1-20 312816 710 28 180 7.09 318 12.52 412.775 16.250 92 3.62 75 2.95 184.2 7.250 410 902
32 A2-11 312214 812 32 190 7.48 172 (185) 6.77 (7.28) 196.869 7.750 92 3.62 75 2.95 117.5 4.625 645 1419
32 A2-15 312215 812 32 190 7.48 266 (275) 10.47 (10.8) 285.775 11.250 92 3.62 75 2.95 165.1 6.500 600 1320
32 A2-20 312216 812 32 190 7.48 318 (370) 12.52 (14.57) 412.775 16.250 92 3.62 75 2.95 231.8 9.125 585 1287
36 A2-15 312615 915 36 200 7.87 266 (275) 10.47 (10.8) 285.775 11.250 92 3.62 75 2.95 165.1 6.500 850 1870
36 A2-20 312616 915 36 200 7.87 318 (370) 12.52 (14.57) 412.775 16.250 92 3.62 75 2.95 231.8 9.125 810 1782

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