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Atlas Heavy-Duty 3-Jaw Scroll Chucks 20" & Up

Series 332 Heavy-Duty Flat-back, A, L, and D Type Mountings, Sizes 20″ thru 32″

  • One year warranty
  • Steel body
  • Sizes 20″ thru 32″
  • Maximum .003″ TIR using nominating pinion
  • .001″ Repeatability using nominating pinion
  • Two-piece American Standard tongue and groove jaws
  • Nitride hardened and ground scroll
  • Three hardened pinions
  • 6-Jaw options available upon request
  • Larger chuck sizes available upon request
Self-Centering 3-Jaw Universal Steel Body Chucks
Chuck SizeFlatback
Chuck No.
Type A SpindleType L SpindleFits Camlock
Spindle Type D
SizeChuck No.SizeChuck No.SizeChuck No.
20"2033-2000A-82033-20A8L-12033-20L1D-82033-20D8
20"---A-112033-2A11L-22033-20L2D-112033-2D11
24"2433-2000A-82433-20A8L-22433-20L2D-82433-20D8
24"---A-112433-2A11---D-112433-2D11
28"2833-2000A-152833-2A15L-22833-20L2D-112833-2D11
28"---A-202833-2A20------
32"3233-2000A-153233-2A15L-33233-20L3D-113233-2D11
32"A-203233-2A20
Consult factory for chucks sizes larger than 32".
Dimensional Data for Universal Flatback Mounting Chucks
Chuck Dia.B1B3B4B5B6B7B15J10RPM
20"19.6"15.748"5.51"(1).236"18.03"M-164.17"3.26"1100
24"23.6"21.456"9.094"(1).236"22.44"M-164.25"3.26"850
28"27.5"23.818"10.23".236"25.98"M-165.25"3.96"750
32"31.5"27.755"10.23".236"29.99"M-165.25"3.66"600
Note: Dimensions are for flatback chucks; for A, D or L mounted chucks dimension B15 will vary, add approx. 1" to B15 dimension. (1) Model No. 2033-2A11 and 2433-2A11 have a 6.5" thru-hole.