ADJ BT-ER :  FINEFIT, DIN 6499 ER collet chucks with center alignment and BT MAS-403 AD/B tapered shanks.  
 
 
RUNOUT (INT) 0.003MM(.00012 TAPER HARDNESS 58-60 SURFACE FINISH N5 COOLANT
  Designation
SS

CSI
d
min
d
max

L

L1

L5

L3

D3

D1

D2

J

G

Kg
  ADJ BT40 D70 ER32  40  ER32  2.0  20.0  129.50  102.5  92.50  52.50  50.00  70.0  62.50  M22X1.5  M16  2.56
  ADJ BT50 D70 ER32  50  ER32  2.0  20.0  144.50  106.5  106.50  52.50  50.00  70.0  70.00  M22X1.5  M24  5.90

Radial adjustment 0.1 mm. Angular adjustment 1°.
Add B to the designation for coolant through flange option.
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