BT-ER-SHORT :  SHORTIN short ER collet chucks with BT MAS-403 AD tapered shanks.  
 
 
RUNOUT (INT) 0.003MM(.00012 TAPER HARDNESS 58-60 SURFACE FINISH N5 G2.5/20000 RPM COOLANT
  Designation
SS
CSI		 d
min		 d
max
L
L1
D3
J
G
G1
Kg
  BT30 ER20 SHORT  30  ER20  1.0  13.0  27.20  5.2  25.00  M12  M12  M25X1.5  0.30

For Adaptation Click on "More Info".
B is the designation for coolant through flange.
Balanced to G2.5/20,000 RPM.
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