1.1 H

10H9

H8

H7

H6

n6n6m

6m

6m

5

k6k6k5

js7

js6

js6

js5

h8 h8 h9h7h7h6h6h5

g6g6g5f6 f6 f7 f7 f8

e7 e8 e9 e8 e9

d9 d8 d9d9c9c9

b9

x6u6

t6s6

r6p6p6

**

**

2.1

h9

h8

h7

h6

h5

D8

X7U7

T7S7

R7

P6N6

H9

B10

C9 C10

D9 D10

D8D9

E9E8E9E8E7

F8F8F7F7F6G6 G7

H6 H6 H7 H7 H8 H9H8H8

JS6

JS6

JS7

K6 K6 K7

M6

M6

M7

N6 N7P6 P7

**

*

1.2

H10

H9H8

H7H6

d8d9

c9b9

h9h8

e9g8

d9c9

h8h7

f8f7

e9e8

d9x6

u6t6

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p6n6

m6k6

js7js6

h7h6

g6f7

f6e7

p6n6

m6m5

k6k5

js6js5

h6h5

g6g5

f6

H10

H9H8

H7H6

-20

0

-15

0

-10

0

-50050

2.2

h6h5

h9h8

h7

00

0H9

H8E9

E8D1

D9D8

C1C9

B1H9

H8F8

E9E8

D9D8

H8H7

F8F7

E7X7

U7T7

S7R7

P7P6

K7N7

N6M7

M6

K6JS7

JS6G7

H7H6

G6F7

F6P6

N6M6

K5JS6

M6

h9h8

h7h6

h6h5

0

200

150

100 50

-50

H6

H9

H8

H7

h8h7

n6n5h6h5

h9

x6u6t6s6r6p6n6m6k6js6h6

r5p5m5k5js5h5

f8f7

c9 e9d9

e8d9

g6f7e7

g5f6

FIT SELECTION BASICS’TECHNICAL DATA»

MANUAL FOR DESIGNING(PRECISION VER.)EXCERPT FROM¤USAGE OF JIS SERIES" ’TECHNICAL DATA»

DIMENSIONAL TOLERANCE AND FITS EXCERPT FROM JIS B 0401(1986)

Com

mon

ly u

sed

hole

-bas

is fi

tsBa

sic

hole

Clea

ranc

e fit

Inte

rfere

nce

fitTr

ansit

ion

fitTo

lera

nce

zone

cla

ss o

f sha

ftCo

mm

only

use

d sh

aft-b

asis

sys

tem

of f

its

Basic

shaf

tTo

lera

nce

zone

cla

ss o

f hol

eCl

eara

nce

fitTr

ansit

ion f

itIn

terfe

renc

e fit

Notic

e*Fi

ts w

ill m

ake

exce

ptio

ns a

ccor

ding

to th

e si

ze s

teps

.No

tice*

Fits

will

mak

e ex

cept

ions

acc

ordi

ng to

the

size

ste

ps.

Mut

ual r

elat

ions

of t

oler

ance

zon

e in

com

mon

ly u

sed

hole

-bas

is s

yste

m o

f fits

Basi

c ho

le

Fit

Tolera

nce ran

ge cla

ss of s

haft

Tran

sitio

n fit

Transi

tion f

itInt

erfere

nce fit

Cleara

nce

fit

Clea

ranc

e fit

Clea

ranc

e fit

Cleara

nce f

it Lubricated fit

Driving fit

Strong press fit

Press fit

Shrinkage fit

Loose rolling fitLight rolling fit

Rolling fit

Interference fit

Clearanc

efit

Variation of tolerance

(O

m)

*Th

is ta

ble

show

s th

e ca

se w

hen

basi

c si

ze is

ove

r 18m

m to

30m

m.

Mut

ual r

elat

ions

of t

oler

ance

zon

e in

com

mon

ly u

sed

shaf

t-bas

is s

yste

m o

f fits

Basic

shaft

Fit

Transition fit

Interference fit

Tran

sitio

n fit

Clea

ranc

e fit

Cleara

nce

fitCl

eara

nce

fitCl

eara

nce

fit

Clearance fit

Inte

rfere

nce

fit

*Th

is ta

ble

show

s th

e ca

se w

hen

basi

c si

ze is

ove

r 18m

m to

30m

m.

Variation of tolerance

(O

m)

Can be moved relatively Cannot be moved relatively

Clearance fit Transition fit Interference fit

Loose fit Light rolling fit Rolling fit Precision rolling fit Lubricated fit Push fit Driving fit Light press fit Press fit Strong press fitCShrinkage fitCCooling fit

Appl

icab

le p

art

The

part

whi

ch a

llow

s a

larg

e cl

eara

nce

spac

e or

the

part

requ

ires

clea

ranc

e sp

ace.

The

par

t whi

ch c

an b

e en

larg

ed to

mak

e cl

eara

nce

spac

e to

mak

e as

sem

bly

easi

er.

The

part

whi

ch re

quire

s pr

oper

cle

aran

ce s

pace

in th

e hi

gh te

mpe

ratu

re.

The

part

whi

ch a

llow

s a

larg

e cl

eara

nce

spac

e or

th

e pa

rt re

quire

s cl

eara

nce

spac

e.

The

bear

ing

part

whi

ch is

wor

king

und

er th

e co

nditi

on o

f hig

h te

mpe

ratu

re,

hig

h sp

eed

and

high

load(

high

gra

de p

ress

ure

feed

lubr

icat

ion)

.

The

bear

ing

part

whi

ch h

as s

light

cle

aran

ce s

pace

and

goo

d lu

bric

atio

n.Th

e part

whic

h allo

ws a

sligh

t clea

rance

spac

e or t

he pa

rt re

quire

s clea

rance

spac

e(hig

h grad

e fit)

.

The

gene

ral c

old

bear

ing

part

of g

reas

e or

oil

lubr

icat

ion.

Fit w

hich

can

be

mob

ile d

ue to

pro

per c

lear

ance

spa

ce(hi

gh g

rade

fit)

.

The

cont

inuo

us r

otar

y pa

rt of

ligh

t loa

d pr

ecis

ion

mac

hine

.Fi

t whi

ch c

an b

e m

obile

in s

pite

of s

mal

l cle

aran

ce s

pace

(sp

igot

and

pos

ition

ing)

. Pr

ecis

ion

trave

ling

part.

Stat

iona

ry p

art w

hich

is n

ot o

f gre

at im

porta

nce.

Spec

ial p

reci

sion

trav

elin

g pa

rt.Fit

whi

ch ca

n be

mov

ed m

anua

lly w

ith u

sing

a lub

ricat

or(hi

gh g

rade

pos

ition

ing)

.

Fit w

hich

can

be

asse

mbl

ed a

nd d

isas

sem

bled

by

woo

d or

lead

ham

mer

.Hi

gh-p

reci

sion

pos

ition

ing

whe

re b

oth

are

unm

obile

.M

ount

ing

part

whi

ch is

giv

en a

littl

e le

eway

.

High

-pre

cisi

on p

ositi

onin

g.

Fit w

hich

can

be as

sem

bled

and

disa

ssem

bled

by a

n iro

n ha

mm

er o

r han

d pr

ess.

(Ke

y or s

uch

item

s are

requ

ired

to p

reve

nt o

ther

com

pone

nts f

rom

rota

ting)

.

Fit w

hich

requ

ires

cons

ider

able

pow

er fo

r ass

embl

ing

and

disa

ssem

blin

g.

High

-pre

cisi

on p

ositi

onin

g w

hich

doe

s no

t tol

erat

e an

y cl

eara

nce

spac

e.

Sam

e as

the

abov

e fo

r ass

embl

ing

and

disa

ssem

blin

g

High

-pre

cisi

on fi

xed

mou

ntin

g.(

Key

or s

uch

item

s ar

e re

quire

d fo

r lar

ge to

rque

tran

smis

sion

.)

Fit w

hich r

equir

es mu

ch po

wer fo

r asse

mblin

g and

disas

sembli

ng. (

Key o

r suc

h item

s are

requir

ed

for la

rge to

rque t

ransm

ission

.)How

ever, w

hen n

on-fe

rrous

comp

onen

ts are

fitted

toge

ther, p

ress

fit po

wer w

ill be

activ

ated.S

tanda

rd pre

ss fit

fixing

betw

een iro

n and

iron o

r betw

een br

onze

and c

oppe

r.

Sam

e as

the

abov

e fo

r ass

embl

ing

and

disa

ssem

blin

g

Shrin

kage

fit,

cool

ing

fit a

nd s

trong

pre

ss fi

t for

larg

e di

men

sion

com

po-n

ents

.

Fixed

firm

ly to

geth

er, s

o th

at pe

rman

ent a

ssem

bling

can

be so

ught

with

sh

rinka

ge fi

t, co

oling

fit a

nd st

rong

pre

ss fi

t for

asse

mbli

ng. P

ress

fit f

or lig

ht al

loy.

Func

tiona

l cla

ssifi

catio

n

Func

tiona

lly, th

e part

which

requ

ires la

rge cle

aranc

e spa

ce

Prod

uctio

n co

stFo

r red

ucin

g

Leng

th o

f fit

is lo

ng.

Expa

nse.

Pos

ition

ing

erro

r is

larg

e.

Safe

ty c

ost

The

part

whi

ch re

quire

s pr

ecis

ion

mov

emen

t with

out a

ny s

lack

.

Ordi

nary

fit p

arts

.

The

gene

ral r

otat

ing

or tr

avel

ing

part.

(Di

sass

embl

ing

is o

ften

done

.)

(Th

e con

dition

of go

od lu

brica

tion i

s req

uired

.)

Tran

smis

sion

of

pow

er c

anno

t be

done

by

only

ju

nctio

n po

wer

of

fit.

Capa

ble

of

asse

mbl

ing

and

disa

s-se

mbl

ing

with

out

dam

agin

g co

mpo

nent

s.

Hard

to

disa

ssem

ble

with

out

dam

agin

g co

mpo

nent

s.

Smal

l pow

er c

an

be tr

ansm

itted

by

junc

tion

pow

er o

f fit

.

Cons

ider

able

po

wer

can

be

trans

mitt

ed b

y ju

nctio

n po

wer

of

fit.

Appl

icat

ion

exam

ple

Fit o

f loo

seni

ng s

afet

y pi

n

Pist

on ri

ng a

nd p

isto

n rin

g gr

oove

Pist

on ri

ng a

nd p

isto

n rin

g gr

oove

Exha

ust v

alve

cag

e an

d tra

velin

g pa

rt of

spr

ing

shee

tCr

ank

web

and

pin

bea

ring( S

ide

surfa

ce)

Flex

ible

pla

te c

oupl

ing

and

gear ( ac

tive

side)

Fixati

on of

gear

and s

haft ( s

mall t

orqu

e)St

oppe

r Pins

STP

N(p6

)In

serti

on o

f valv

e guid

e for

inlet

valve

Do

wel P

ins M

ST(

p6)

Print

ed in

red

are l

isted

with

appli

cable

exam

ples o

f mold

par

ts.

Fixa

tion

of b

ushi

ng fo

r bea

ring

Fixa

tion

of d

rivin

g ge

ar a

nd b

oss

Fixa

tion

of jo

int f

lang

e an

d sh

aft (

larg

e to

rque)

Inse

rtion

of v

alve

gui

de fo

r inl

et v

alve

Fixa

tion

of b

ushi

ng fo

r bea

ring

Join

t and

sha

ft

Inse

rtion

of v

alve

guid

e fo

r inl

et v

alve

Ang

ular

Pin

s(m

5)Pr

ecis

ion

fit

Lead

er P

ins

& B

ushi

ngs(

m5)

Flex

ible

pla

te c

oupl

ing

and

gear ( pa

ssiv

e si

de)

Fit o

f joi

nt fl

ange

and

sha

ftFix

ation

of pi

ston o

f hyd

raulic

syste

m an

d sha

ft Ba

ll Butt

ons B

BT(

k5)

Ream

er b

olt

Dow

el P

ins

MST

M(

m6)

Ream

er b

olt

Pres

s-fit

Sec

tion

of T

aper

ed P

in S

ets(

k6)

Fixa

tion

of g

ear p

ump

shaf

t and

cas

ing

Fit o

f rim

of t

ooth

ed g

ear a

nd b

oss

Gove

rnor

way

and

pin

Fit b

etw

een

join

t fla

nges

Fit o

f too

thed

gea

r of p

reci

sion

gea

r mec

hani

smFi

t of r

im a

nd b

oss

Dow

el P

ins

MST

H(h7

)Sp

rue

Bush

ings(

h6)

Valve

stem

of pr

ecisi

on co

ntro

l valv

e P

ushe

r Pins

PSP

(g6)

Key

and

key

groo

vePi

n fo

r lin

k sy

stem

and

leve

r

Leve

r for

link

sys

tem

and

bus

hing

Gene

ral s

haft

and

bush

ing

Run

ner L

ock

Pins(

f6)

Inse

rtion

par

t of c

oolin

g ex

haus

t valv

e cag

e Re

turn

Pins

(f6)

Gene

ral t

rave

ling

part

Pul

ler B

olts

PBN

T(e9)

Mai

n be

arin

g fo

r cra

nksh

aft

Sto

pper

Bol

ts S

TBG(

e9)

Fit o

f exh

aust

val

ve s

eat

Sho

ulde

r Bo

lts M

SB(

e9)

Toleranc

e range c

lass of s

haft

---

-----

---------77

-56

-67

-46

-56

-38

-51

-33

-43

-28

-36

-24

-30

-20

-16

6-

131

-14

6-

111

-12

1-

91-

106

-76

-86

-61

-76

-51

-61

-40

-54

-33

-44

-26

-37

-22

-31

-19

-28

-18

-17

1-

131

-15

9-

119

-14

7-

107

-12

6-

91-

113

-78

-94

-64

-85

-55

-70

-45

-64

-39

-54

-33

---------

-16

9-

123

-15

9-

113

-15

1-

105

-13

3-

93-

125

-85

-11

7-

77-

101

-66

-93

-58

-78

-48

-72

-42

-59

-34

-48

-27

-39

-21

-32

-17

-27

-15

-24

-14

-17

2-

109

-16

6-

103

-15

0-

93-

144

-87

-13

0-

78-

126

-74

-11

3-

67-

109

-63

-10

6-

60-

93-

53-

90-

50-

88-

48-

76-

41-

73-

38-

62-

32-

60-

30

-50

-25

-41

-20

-34

-16

-28

-13

-23

-11

-20

-10

-10

8-

45

-98

-41

-88

-36

-79

-33

-68

-28

-59

-24

-51

-21

-42

-17

-35

-14

-29

-11

-24-9

-20-8

-16-6

-95

-55

-87

-51

-79

-47

-70

-41

-61

-36

-52

-30

-45

-26

-37

-21

-31

-18

-26

-15

-21

-12

-17-9

-12-6

-80

-17

-73

-16

-66

-14

-60

-14

-52

-12

-45

-10

-39-9

-33-8

-28-7

-23-5

-19-4

-16-4

-14-4

-67

-27

-62

-26

-57

-25

-51

-22

-45

-20

-38

-16

-33

-14

-28

-12

-24

-11

-20-9

-16-7

-13-5

-10-4

-630

-570

-520

-460

-400

-350

-300

-250

-210

-180

-150

-120

-12-2

-50

-10

-46

-10

-41-9

-37-8

-33-8

-28-6

-24-5

-20-4

-17-4

-15-4

-12-3

-9

-1

-8

-2

-45

+18

-40

+17

-36

+16

-33

+13

-28

+12

-25

+10

-21+9

-18+7

-15+6

-12+6

-10+5

-9

+3

-100

-32+

8

-29+

7

-27+

5

-24+

5

-21+

4

-18+

4

-15+

4

-13+

3

-11+

2

-9

+2

-7

+2

-6

+2

-60

Ú23

Ú20Ú5

Ú6

Ú7

Ú9

Ú10

Ú12

Ú15

Ú17

Ú26

Ú28

Ú31

Ú20

Ú18

Ú16

Ú14

.5

Ú12

.5

Ú11Ú

9.5

Ú8

Ú6.

5

Ú5.

5

Ú4.

5

Ú4

Ú3

0+

2500

+23

00+

2100

+18

50+

1600

+14

00+

1200

+10

00+

840+

700+

580+

480+

40X

7U

7T7

S7

R7

P7

P6

N7

N6

M7

M6

K7

K6

JS7

JS6

H10

H9 0

+15

50+

1400

+13

00+

1150

+10

00+

870+

740+

620+

520+

430+

360+

300+

25

0+

970+

890+

810+

720+

630+

540+

460+

390+

330+

270+

220+

180+

14

0+

630+

570+

520+

460+

400+

350+

300+

250+

210+

180+

150+

120+

10

0+

400+

360+

320+

290+

250+

220+

190+

160+

130+

110+

90+

80+

6

+20

+83

+18

+75

+17

+69

+15

+61

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+10

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5

+62

+15

1

+56

+13

7

+50

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2

+43

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6

+36

+90

+30

+76

+25

+64

+20

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+43

+13

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6+

20

+68

+13

1

+62

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9

+56

+10

8

+50

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+36

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+30

+60

+25

+50

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+13

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+10

8

+62

+98

+56

+88

+50

+79

+43

+68

+36

+58

+30

+49

+25

+41

+20

+33

+16

+27

+13

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120

10080655040302418141063

450

400

355

315

280

250

225

200

180

160

140

120

10080655040302418141063

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H8

H7

H6

G7

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F8

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E9

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5*

js7

js6

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h6

h5

g6

g5

---

----

-----

--------

-----

Ú31

Ú28

Ú26

Ú23

Ú20

Ú17

Ú15

Ú12

Ú10Ú9

Ú7

Ú6

Ú5

Ú3

Ú4

Ú4.

5

Ú5.

5

Ú6.

5

Ú8

Ú9.

5

Ú11

Ú12

.5

Ú14

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Ú16

Ú18

Ú20

Ú13

.5

Ú12

.5

Ú11

.5

Ú10Ú

9

Ú7.

5

Ú6.

5

Ú5.

5

Ú4.

5

Ú4

Ú3

Ú2.

5

Ú2

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50

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-350

-300

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-180

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-40

-17

-35

-15

-32

-14

-27

-12

-23

-10

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-16-7

-14-6

-11-5

-9

-4

-6

-2

-16

5-

68

-15

1-

62

-13

7-

56

-12

2-

50

-10

6-

43

-90

-36

-76

-30

-64

-25

-53

-20

-43

-16

-35

-13

-28

-10

-20-

6

-13

1-

68

-11

9-

62

-10

8-

56

-96

-50

-83

-43

-71

-36

-60

-30

-50

-25

-41

-20

-34

-16

-28

-13

-22

-10

-16-6

-10

8-

68

-98

-62

-88

-56

-79

-50

-68

-43

-58

-36

-49

-30

-41

-25

-33

-20

-27

-16

-22

-13

-18

-10

-12-6

-29

0-

135

-26

5-

125

-24

0-

110

-21

5-

100

-18

5-

85

-15

9-

72

-13

4-

60

-11

2-

50

-92

-40

-75

-32

-61

-25

-50

-20

-39

-14

-23

2-

135

-21

4-

125

-19

1-

110

-17

2-

100

-14

8-

85

-12

6-

72

-10

6-

60

-89

-50

-73

-40

-59

-32

-47

-25

-38

-20

-28

-14

-19

8-

135

-18

2-

125

-16

2-

110

-14

6-

100

-12

5-

85

-10

7-

72

-90

-60

-75

-50

-61

-40

-50

-32

-40

-25

-32

-20

-24

-14

-38

5-

230

-35

0-

210

-32

0-

190

-28

5-

170

-24

5-

145

-20

7-

120

-17

4-

100

-14

2-

80

-11

7-

65

-93

-50

-76

-40

-60

-30

-45

-20

-32

7-

230

-29

9-

210

-27

1-

190

-24

2-

170

-20

8-

145

-17

4-

120

-14

6-

100

-11

9-

80

-98

-65

-77

-50

-62

-40

-48

-30

-34

-20

-63

5-

480

-59

5-

440

-54

0-

400

-50

0-

360

-46

0-

330

-43

0-

300

-39

5-

280

-37

5-

260

-35

5-

240

-33

0-

230

-31

0-

210

-30

0-

200

-26

7-

180

-25

7-

170

-22

4-

150

-21

4-

140

-19

2-

130

-18

2-

120

-16

2-

110

-13

8-

95

-11

6-

80-

100

-70

-85

-60

-99

5-

840

-91

5-

760

-82

0-

680

-74

0-

600

-67

0-

540

-61

0-

480

-53

5-

420

-49

5-

380

-45

5-

340

-41

0-

310

-38

0-

280

-36

0-

260

-32

7-

240

-30

7-

220

-27

4-

200

-26

4-

190

-24

2-

180

-23

2-

170

-21

2-

160

-19

3-

150

-18

6-

150

-17

0-

140

-16

5-

140

500

450

400

355

315

280

250

225

200

180

160

140

120

10080655040302418141063

450

400

355

315

280

250

225

200

180

160

140

120

10080655040302418141063

-

+20+4

+8

+16+8

+13

+10

+12

+38

+17

+28

+20

+33

+23

- - - - -+24

+15

’TECHNICAL DATA»

TOLERANCE OF COMMONLY USED SHAFT FITS EXCERPT FROM JIS B 0401(1986)’TECHNICAL DATA»

TOLERANCE OF COMMONLY USED HOLE FITS EXCERPT FROM JIS B 0401(1986)

( mm

)

Basic

size

ste

p

Devi

atio

ns o

f hol

es to

be

used

in c

omm

only

use

d fit

s

or less

Over

Tole

ranc

e zo

ne c

lass

of h

ole

Unit

m

Devi

atio

ns o

f sha

fts to

be

used

in c

omm

only

use

d fit

sBa

sic si

ze

step

( mm) or l

essOv

er

Tole

ranc

e Zo

ne c

lass

of s

haft

Unit

m

Note

:Thi

s ta

ble

show

s th

at th

e up

per f

igur

es a

re th

e up

per d

evia

tion

and

the

low

er fi

gure

s ar

e th

e lo

wer

dev

iatio

n.

Note

: Thi

s ta

ble

show

s th

at th

e up

per f

igur

es a

re th

e up

per d

evia

tion

and

the

low

er fi

gure

s ar

e th

e lo

wer

dev

iatio

n.