Toolholder Designation

ExternalER-2020K16-
12345678
InternalIRN 1618M16-

1 Utilisation 5 Minimum Bore Size (Internal) E I

External Internal

2 Hand

L R

Left Hand Right Hand

3 Option

N = No Anvil

4 Shank Size or Tool Diameter

4. Internal Shank Diameter 4 & 5. External Square Shank e.g. 16 = d 16 mm e.g. 2020 = 20 x 20mm

D 1 d

Internal: e.g. 18 = D Ø, 8mm 1 d

D 1 Min. Bore

6 Tool Length

D = 60 Q = 180 F = 80 R = 200 H = 100 S = 250

K = 125 T = 300 L

L = 140 U = 350 M = 150 V = 400 P = 170

7 Insert Size

IC L mm Inch

06 5/32IC
08 3/16
08U 3/16
11 1/4
16 3/8
22 1/2
22U 1/2UL

27 5/8 27U 5/8U

8 Option

U

Neutral