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CLOSE THIS BOOKReaming - Course: Techniques for machining of material. Trainees' handbook of lessons (Institut für Berufliche Entwicklung, 21 p.)
VIEW THE DOCUMENT(introduction...)
VIEW THE DOCUMENT1. Purpose of reaming
VIEW THE DOCUMENT2. Design and types of reamers
VIEW THE DOCUMENT3. Preparation for reaming
VIEW THE DOCUMENT4. Reaming with solid reamer
VIEW THE DOCUMENT5. Reaming with floating reamer
VIEW THE DOCUMENT6. Reaming of taper holes
VIEW THE DOCUMENTTable 1 - Recommended values for machining allowances
VIEW THE DOCUMENTTable 2 - Usual kinds of fits

Table 2 - Usual kinds of fits

(extract from ISO system of fits standard holes)

Tolerance zone

E8

F7

H6

H7

H8

H11

Range of nominal size
(mm)

Maximum variation in mm

exceeding

1

+ 28

+ 16

+ 7

+ 9

+ 14

+ 60

up to

3

+ 14

+ 7

0

0

0

0

exceeding

3

+ 38

+ 22

+ 8

+ 12

+ 18

+ 75

up to

6

+ 20

+ 10

0

0

0

0

exceeding

6

+ 47

+ 26

+ 9

+ 15

+ 22

+ 90

up to

10

+ 25

+ 13

0

0

0

0

exceeding

10

+ 59

+ 34

+ 11

+ 18

+ 27

+ 110

up to

18

+ 32

+ 16

0

0

0

0

exceeding

18

+ 73

+ 41

+ 13

+ 21

+ 33

+ 130

up to

30

+ 40

+ 20

0

0

0

0

exceeding

30

+ 89

+ 50

+ 16

+ 25

+ 39

+ 160

up to

50

+ 50

+ 25

0

0

0

0

exceeding

50

+ 106

+ 60

+ 19

+ 30

+ 46

+ 190

up to

80

+ 60

+ 30

0

0

0

0

exceeding

80

+ 126

+ 71

+ 22

+ 35

+ 54

+ 220

up to

120

+ 72

+ 36

0

0

0

0

exceeding

120

+ 148

+ 83

+ 25

+ 40

+ 63

+ 250

up to

180

+ 85

+ 43

0

0

0

0

exceeding

180

+ 172

+ 96

+ 29

+ 46

+ 72

+ 290

up to

250

+ 100

+ 50

0

0

0

0

exceeding

250

+ 191

+ 108

+ 32

+ 52

+ 81

+ 320

up to

315

+ 110

+ 56

0

0

0

0

exceeding

315

+ 214

+ 119

+ 36

+ 57

+ 89

+ 360

up to

400

+ 125

+ 62

0

0

0

0

exceeding

400

+ 232

+ 131

+ 40

+ 63

+ 97

+ 400

up to

500

+ 135

+ 68

0

0

0

0

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