7Leaders

Machine Reamers R300

Designed with straight cutting flutes. Applicable to blind hole reaming. Application for reaming different steels below 48HRC, stainless steel, cast iron, aluminium, copper…and etc. Accuracy tolerance: H7 (m5)

a

30°

Lc

L1

L

Through

Blind Hole 

Steel Cast lron Stainless Steel AL, Copper

Hole 

VHM Carbide

Uncoated Bright

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

Standard Length

Code No. R300-Dc

Dc H7

Lc mm

L1 mm

L mm

d mm

a mm 0.2 0.2 0.3 0.3 0.4 0.4 0.5 0.5 0.6 0.6 0.6 0.8 0.8 0.8 1.0 1.0

Z teeth

R300 Bright

1

● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●

6 8

15 18 24 29 36 41 44 48 53 58 58 64 70 70 76 76 82 82 88 97

34 40 49 57 61 70 75 80 86 93 93

1

4 4 4 4 4 4 4 4 6 6 6 6 6 6 6 6 6 6 6 6 6

1.5

1.5

2

11 14 15 18 19 21 23 26 26 28 31 31 33 33 36 36 38 41 44

2

2.5

2.5

3

3

3.5

3.5

4

4

4.5

4.5

5

5

5.5

5.5

6

6

6.5

101 109 109 117 117 125 125 133 142 151

6.5

7

7

7.5

7.5

8

8

8.5

8.5

9

9

1.0 1.0 1.0 1.2 1.2

9.5

9.5

10 11 12

10 11 12

106

Please refer to page P493 for parameters.

465

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