High Precision NC Machine Reamers ( With Milling Cutting Edge) R320
Designed with left helix and right cutting flutes with unequal flute design. Downward chip evacuation. Application for reaming different steels below 48HRC, stainless steel, cast iron, aluminium, copper…and etc. Accuracy tolerance: H7 (m5) 0/+0.004mm
a
Lc
L1
L
Through
Blind Hole
Steel Cast lron Stainless Steel AL, Copper
Hole
VHM Carbide
Uncoated Bright
L 35°
Z
Tolerance regulation
P H M K N
Dc size (mm)
Reamer Dc tolerance (mm)
Grind Dc tolerance (mm)
Above
Under
m5(JIS)
H7(DIN 1420)
Min
Mid
Max
-
3 6
+0.002/+0.006 +0.004/+0.008 +0.004/+0.009 +0.005/+0.010 +0.006/+0.012 +0.006/+0.012 +0.007/+0.015 +0.008/+0.015 +0.008/+0.017 +0.009/+0.017
+0.004 +0.005 +0.007 +0.009 +0.011
+0.005 +0.007 +0.009 +0.011 +0.013
+0.006 +0.009 +0.011 +0.013 +0.015
3 6
10 18 30
10 18
Stub Length
Code No. R320-Dc
Tolerance mm 0/+0.004 0/+0.004 0/+0.004 0/+0.004 0/+0.004
Lc mm
L1 mm
L mm
d h6
a mm
Z teeth
R320 Bright
Dc +0.004 - 0
2.95 2.96 2.97 2.98 2.99
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20 20 20 20 20 20 20 20 20 20 20 22 22 22 22 22 22 22 22 22 22 22 24 24 24 24 24 24 24 24 24 24 24 26 26 26
33 33 33 33 33 33 33 33 33 33 33 43 43 43 43 43 43 43 43 43 43 43 52 52 52 52 52 52 52 52 52 52 52 52 52 52
61 61 61 61 61 61 61 61 61 61 61 75 75 75 75 75 75 75 75 75 75 75 86 86 86 86 86 86 86 86 86 86 86 93 93 93
3 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 5 6 6 6
4 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 6 6 6
3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 4 4 4
3
H7
3.01 3.02 3.03 3.04 3.05 3.95 3.96 3.97 3.98 3.99
0/+0.004 0/+0.004 0/+0.004 0/+0.004 0/+0.004 0/+0.004 0/+0.004 0/+0.004 0/+0.004 0/+0.004
4
H7
4.01 4.02 4.03 4.04 4.05 4.95 4.96 4.97 4.98 4.99
0/+0.004 0/+0.004 0/+0.004 0/+0.004 0/+0.004 0/+0.004 0/+0.004 0/+0.004 0/+0.004 0/+0.004
5
H7
5.01 5.02 5.03 5.04 5.05 5.95 5.96 5.97
0/+0.004 0/+0.004 0/+0.004 0/+0.004 0/+0.004 0/+0.004 0/+0.004 0/+0.004
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