Delivering the Most Advanced Industrial Solutions

1
Home Products PA31 series Adjustable Cast Iron Body 3-Jaw Adjustable Precision Self-Centering Chucks

Mostly suitable for the production of parts with top concentricity.It is for universal use,hawever particularly advantageous for grinding machines, indexing heads and lathes:
● adjusting accuracy within 0.005mm
● repeatabillity 0.015mm


The clamped workpiece is adjusted to the required concentricity by mean of4 or8 radially arranged adjusting screws Standard accessories:
● 1 set of hard reversible top jaws
● 1 wrench
● 1 hexagonal key
● 1 set of mounting screws.


截屏2025-10-14 下午7.19.33

Chuck SizeDD₁D₂D₃HH₁hz - dSolid Jaws - Cast iron body2 - Piece Jaws - Cast iron body
12512760.33112.733398.15816.73 - M6PA31 - 125PA31 - 125A
160152.579.37135.7039107.96417.56 - M6PA31 - 160PA31 - 160A
200210120.65190.560126.379.318.66 - M10PA31 - 200PA31 - 200A
250※254161.90111.1372142.808920.46 - M12PA31 - 250PA31 - 250A
315※305200.79133.3583165.80102.520.46 - M12PA31 - 315PA31 - 315A
380※381299.237171.45108209136.227.76 - M16PA31 - 380PA31 - 380A