Armeg Product Guide

Long Series HSS Roll-Forged Jobber Drill Bits

HSS Roll-Forged Jobber Drill Bits Part Numbers & Technical Information

Perfect for….. Longer length HSS Jobbers are ideal for drilling deeper holes or where extended reach is required

HSS Roll-Forged Jobber Drill Bits - Imperial Range

Diameter Size inch

Overall Length

Working Length

Part Number Packs of 5

Singles

Packs of 10

mm

mm

1/16” 5/64” 3/32” 7/64”

48

22 25 32 38 41 48 51 54 59 62 64 67 70 73 75 78 81 84 87 89 92 95 98

YB0010W YB0020W YB0030W YB0040W YB0050W YB0060W YB0070W YB0080W YB0090W YB0100W YB0110W YB0120W YB0130W YB0140W YB0150W YB0160W YB0170W YB0180W YB0190W YB0200W YB0210W YB0220W YB0230W YB0240W YB0250W YB0260W YB0270W YB0280W

- - - - - - - - - - - - - - - - - - - - -

YB0010L YB0020L YB0030L YB0040L YB0050L YB0060L YB0070L YB0080L YB0090L YB0100L YB0110L YB0120L YB0130L YB0140L YB0150L YB0160L YB0170L YB0180L YB0190L YB0200L YB0210L

51

57 67 70 76 79 83 89 92 95 98

1/8”

9/64” 5/32”

Long Series HSS Roll-Forged Jobber Drill Bits

Diameter Size mm

Overall Length Working Length

Singles

Part Number Packs of 5

Packs of 10

mm

mm

11/64”

3.0

100

66

-

-

YM0300LLS

3/16”

4.0

119

78

-

-

YM0400LLS

13/64”

7/32”

4.5

126

82

-

-

YM0450LLS

15/64”

5.0

132

87

-

-

YM0500LLS

1/4”

102 105 108 111 114 117 121 124 127 130 133 140 143 143 146 152

6.0

139

91

-

-

YM0600LLS

17/64”

8.0

165

109

-

-

YM0800LLS

9/32”

19/64”

5/16”

21/64” 11/32” 23/64” 25/64” 13/32” 27/64” 29/64” 15/32” 31/64” 3/8” 7/16”

Operation Speed Chart

YB0220L YB0230L YB0240L YB0250L YB0260L YB0270L YB0280L

- - - - - - -

Diameter Size mm

Mild Steel

Free-Cutting

Grey Cast Iron

Aluminium

Copper

Brass RPM 3183 2387 1910 1592 1194

RPM

Stainless Steel RPM

RPM

RPM

RPM

3 4 5 6 8

1804 1353 1082

1273

2653 1989 1592 1326

3183 2387 1910 1592 1194

3183 2387 1910 1592 1194

103 106 106 110 114

955 764 637 477 382

902 676 541

995 796

10

955

955

955

Please visit www.armeg.co.uk for full operation speed chart

1/2”

152

114

YB0290W

YB0290L

-

Operation Speed Chart

Diameter Size

Mild Steel

Free-Cutting

Grey Cast Iron

Aluminium

Copper

Brass RPM 6658 4160 2773 2080 1387 1040

inch

Decimal

RPM

Stainless Steel RPM

RPM

RPM

RPM

5/64”

0.0781 0.1250 0.1875 0.2500 0.3750 0.5000

3585 2240 1493 1120

2305 1440

4609 2880 1920 1440

6658 4160 2773 2080 1387 1040

6658 4160 2773 2080 1387 1040

1/8”

3/16”

960 720 480 360

1/4” 3/8” 1/2”

747 560

960 720

Please visit www.armeg.co.uk for full operation speed chart

When drilling steel and alloys

When drilling steel and alloys

89

90