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4-Jaw Universal Self-Centering Steel Body Chucks

Series 743 Sizes 6″ thru 24″

  • One-year warranty
  • Sizes 6″ thru 24″
  • Chucks can be supplied with thru holes from front of chuck for mounting on rotary tables or centers
  • Maximum .003″ TIR using nominating pinion
  • .001″ Repeatability using nominating pinion
  • Two-piece American Standard tongue and groove jaws
  • Nitride hardened and ground scroll
  • Hardened pinions
  • Steel body
  • Can be used for either two jaw or four jaw concentric, self-centering chucking
  • Larger sizes available on request
  • Sizes 20″ and 24″ chucks also available in iron body on request
4-Jaw Universal Steel Body Chucks
Chuck SizeFlatback Chuck No.Camlock Type D SpindleType L SpindleType A SpindleThreaded Type Spindle
SizeChuck No.SizeChuck No.SizeChuck No.SizeChuck No.
6"0673-2000D-30673-20D3L-000673-2L00A-40673-20A41-1/2 - 80673-2041
6"D-40673-20D4L-00673-20L0A-50673-20A51-3/4 - 80673-2042
6"2-1/4 - 80673-2043
6"2-3/8 - 60673-2046
8"0873-2000D-40873-20D4L-000873-2L00A-50873-20A52-1/4 - 80873-2043
8"D-50873-20D5L-00873-20L0A-60873-20A62-3/8 - 60873-2046
8"D-60873-20D6
10"1073-2000D-51073-20D5L-01073-20L0A-51073-20A52-1/4 - 81073-2043
10"D-61073-20D6L-11073-20L1A-61073-20A62-3/8 - 61073-2046
10"D-81073-20D8A-81073-20A8
12"1273-2000D-61273-20D6L-01273-20L0A-61273-20A6
12"D-81273-20D8L-11273-20L1A-81273-20A8
12"D-111273-2D11L-21273-20L2
16"1673-2000D-61673-20D6L-11673-20L1A-81673-20A8
16"D-81673-20D8L-21673-20L2A-111673-2A11
16"D-111673-2D11
20"2073-2000D-82073-20D8L-12073-20L1A-82073-20A8
20"D-112073-2D11L-22073-20L2A-112073-2A11
24"2473-2000D-82473-20D8L-22473-20L2A-82473-20A8
24"D-112473-2D11A-112473-2A11
Dimensional Data for Universal Flatback Mounting Chucks with Two-Piece Jaws
Chuck Dia.B1B3B4B5B6B7B15J10
6-1⁄4"6.3"4.921"1.65".157"5.51"3xM102.56"1.64"
8"7.9"6.299"2.16".157"6.92"3xM102.95"1.69"
10"9.8"7.952"3.15".165"8.74"3xM123.26"2.11"
12"12.4"10.157"3.74".196"11.18"3xM144.13"2.12"
16"15.8"12.598"5.11".196"14.25"3xM165.552.44"
20"19.6"15.748"6.49".236"18.03"3xM164.17"2.93"
24"23.6"21.456"8.07".275"23.07"3xM165.51"2.93"
Note: Dimensions are for flatback chucks; on A, L or D mounted chucks dimension B15 will vary.
(1) Model No. 2033-2A11 and 2433-2A11 have a 6.5 thru-hole.