NC Machine Reamers (Difficult To Cut Material • Coolant Hole) R212TX
Designed with left helix and right cutting flutes with unequal flute design. Downward chip evacuation. Application for reaming different steels below 62HRC, stainless steel, High temp alloys, cast iron, copper…and etc. Extremely high reaming life with coolant holes for blade cooling. Nano multilayer coating AlTiSiN with superior wear resistance is suitable for high hardness materials reaming. Accuracy tolerance: H7 (m5) 0/+0.004mm
a
Lc
L1
L
Through
Blind Hole
Steel Cast Iron
Hole
VHM Carbide
AlTiSiN
L 12°
Stainless Steel Difficult To Cut Material
Z
Tolerance regulation
P H M K
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
Standard Length
Code No. R212TX-Dc
Dc mm
Tolerance mm
Lc mm
L1 mm
L mm
a mm 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.6 0.6 0.6 0.6 0.6 0.6
d h5
Z teeth
R212TX AlTiSiN
2.97 0/+0.004 2.98 0/+0.004 2.99 0/+0.004
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20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20
42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42
80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80
4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 6 6 6 6 6 6 6 6 6 6 6
4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
3
H7
3.01 0/+0.004 3.02 0/+0.004 3.03 0/+0.004
3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9
H7 H7 H7 H7 H7 H7 H7 H7 H7
3.97 0/+0.004 3.98 0/+0.004 3.99 0/+0.004
4
H7
4.01 0/+0.004 4.02 0/+0.004 4.03 0/+0.004
4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9
H7 H7 H7 H7 H7 H7 H7 H7 H7
4.97 0/+0.004 4.98 0/+0.004
458
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