Recommended Cutting Speeds (in RPMs)Bi-metal Hole Saw

Item No.

mm

Inches

Mild Steel

Brass

Aluminum

B0101014

14

9/16

580

790

900

B0101016

16

5/8

550

730

825

B0101017

17

11/16

500

665

750

B0101019

19

3/4

460

600

690

B0101020

20

25/32

440

580

660

B0101022

22

7/8

390

520

585

B0101024

24

15/16

370

495

555

B0101025

25

1

350

470

525

B0101027

27

1-1/16

325

435

480

B0101029

29

1-1/8

300

400

450

B0101030

30

1-3/16

285

380

425

B0101032

32

1-1/4

275

380

410

B0101033

33

1-5/16

260

345

390

B0101035

35

1-3/8

250

330

375

B0101037

37

1-7/16

240

315

360

B0101038

38

1-1/2

230

300

345

B0101040

40

1-9/16

220

290

330

B0101041

41

1-5/8

210

280

315

B0101043

43

1-11/16

205

270

305

B0101044

44

1-3/4

195

260

295

B0101046

46

1-13/16

190

250

285

B0101048

48

1-7/8

180

240

270

B0101051

51

2

170

230

255

B0101052

52

2-1/16

165

220

245

B0101054

54

2-1/8

160

210

240

B0101057

57

2-1/4

150

200

225

B0101060

60

2-3/8

140

190

220

B0101064

64

2-1/2

135

180

205

B0101065

65

2-9/16

130

175

200

B0101067

67

2-5/8

130

170

185

B0101070

70

2-3/4

125

160

185

B0101073

73

2-7/8

120

160

180

B0101076

76

3

115

150

170

B0101079

79

3-1/8

110

140

165

B0101083

83

3-1/4

105

140

155

B0101086

86

3-3/8

100

130

150

B0101089

89

3-1/2

95

130

145

B0101092

92

3-5/8

95

120

140

B0101095

95

3-3/4

90

120

135

B0101098

98

3-7/8

90

120

135

B0101102

102

4

85

110

130

B0101105

105

4-1/8

80

110

120

B0101108

108

4-1/4

80

110

120

B0101111

111

4-1/8

80

100

120

B0101114

114

4-1/2

75

100

105

B0101121

121

4-3/4

75

95

95

B0101127

127

5

65

90

90

B0101140

140

5-1/2

60

85

85

B0101146

146

5-3/4

55

75

75

B0101152

152

6

55

75

75

B0101160

160

6-5/16

50

75

75

B0101168

168

6-5/8

50

75

75

B0101177

177

7

45

65

65

B0101210

210

8-5/16

40

60

60