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Shrink Fit Chuck
ER Collet Chuck
CERTIFICATE OF QUALITY
Chuck fine balanced
G2,5  25.000 1/min
or U<1gmm
All functional surfaces machined
Taper tolerance AT3
Use:
For clamping tools with cylindrical shank in ER collets.

JIS B 6339 BT30

– Included in delivery: locknut (balanced, with slide coating for higher clamping forces);
– locknut type HS (High-Speed, fine balanced, with slide coating for higher clamping forces) at extra charge
Technical data subject to change without prior notice.
INCH
ER  11   16   20   25 
Ø D:  0.75"   1.1"   1.34"   1.65" 
Clamping range:  0.02"-0.28"   0.02"-0.39"   0.06"-0.51"   0.04"-0.63" 
L:  1.06"   1.3"   1.54"   1.61" 
Order number gage length A in inch
30.520... short   2.36" 
 INFO 
 2.36" 
 INFO 
 2.36" 
 INFO 
 2.36" 
 INFO 
30.521... long   3.94" 
 INFO 
 3.94" 
 INFO 
 3.94" 
 INFO 
 3.94" 
 INFO 
30.525... extrashort   1.97" 
 INFO 
 1.97" 
 INFO 
 1.97" 
 INFO 
  
Accessories
83.912... Chuck Nut (pre-balanced)  INFO   DXF 
 INFO 
 DXF 
 INFO 
 DXF 
 INFO 
83.912...HS Chuck Nut HS (fine-balanced)  DXF 
 INFO 
 DXF 
 INFO 
84.200... Wrench  INFO   INFO   INFO 
84.200... Wrench  INFO 
  ER Collets  see accessories 
  Pull Studs  see accessories 
  Shrinking Extensions  see accessories 
Imprint/Company dataTerms of delivery and paymentConditions of PurchaseTerms of use
+++ BIG and HAIMER- strong partnership for the Japanese market +++
+++ „Keep the Balance“ with Haimer at the AMB and IMTS exhibition +++
+++ A sign for the future – Haimer welcomes twelve new apprentices for the industrial and commercial sector +++
+++ First worldwide official SAFE-λOCK™ licensee +++
+++ Possibibility of standardisation thanks to Weldon and Safe Lock +++