Master 12" Power Chuck (212 size) by Auto-Grip

    Direct replacement for the trademarked chucks:

         Kitagawa     B-212  

         SamChully  HS-12

         Chandox     OP-212

         Strong         N-212

         and other brands with similar dimensions and jaw serrations.

        NOTE:  Chuck comes with A2-8 Spindle mounting adapter and can be converted to a Standard plainback chuck by removing adapter mounting bolts

• Specification / Dimensions (see Illustration) :
  • Nominal Size : 12"
  • Model : MG12A8
  • Mount : A8
  • A : 304 mm (12 in)
  • F : 91 mm (3.58 in)
  • B : 122 mm (4.80 in)
  • K max Thread : M100x2
  • Jaw Stroke : 5.3 mm (0.209 in)
  • Max Grip : 143.6 KN ( 32,282 lbs)
  • Max D-Tube Pull : 54.9 KN ( 12,342 lbs)
  • Max RPM : 3300
  • Mass : 59.5 kg (131 lb)
  • T-Slot : 21 mm (0.827 in)
  • DT Stroke : 23 mm (0.906 in)
  • C : 220 mm (8.66 in)
  • D : 171 mm (6.75 in)
  • D1 : 139.72 mm (5.50 in)
  • D2 : 190 mm (7.48 in)
  • E : 6 mm (0.236 in)
  • E1 : 18 mm (0.709 in)
  • G Max : 26 mm (1.023 in)
  • G Min : 3 mm (0.12 in)
  • H : 28 mm (1.102 in)
  • J : 50 mm (1.968 in)
  • L-1 : 25 mm (0.984 in)
  • M : 51 mm (2.00 in)
  • N : 130 mm (5.12 in)
  • P : 30 mm (1.18 in)
  • Q Max : 45.8 mm (1.803 in)
  • Q Min :  15.8 mm (0.662 in)
  • R Max : 61.3 mm (2.413 in)
  • R Min : 56 mm (2.205 in)
  • S : 50 mm (1.968 in)
  • U : 3-M8
  • L : 6-M16