Spherical Bush Set:SBSF,SBSS,SBSR0 pages

OUTLINE OF SPHERICAL BUSHING UNIT

Outline of Spherical Bushing Unit

OILLESS SPHERICAL BUSH SET

Spherical Bushing Set
RoHS

q For operation of spherical bushing unit
　(1) Assembly and fixing method of unit
q Insert the unit at the specified position of the shaft.
w Fix the inner ring and the shaft with set screws.
e Fix the case with bolts.
　　　

SBSF (Inner Ring Flange Type)
SBSS (Inner Ring Straight Type)
SBSR (w , Outer Ring Only)

Make sure that the mating part for the unit is suitable for operating conditions.
Be careful that there is no foreign matter or step on the mounting surface.
• When three units or more are used, align the shaft correctly.
(The tolerance should be +/-0.25 mm.)
•

•

SBSF

SBSS
C

C

3.2

f

3.2

0.8

3.2

w

2-M

f

2-Ma
12

hd

0.8

0.8

S

　(3) For thrust load
q If thrust load is applied, use the flange type inner ring. Solid lubricant is embedded at one side of the outer
ring.
w When a flange type is used, make assembly so that the flange area may match the solid lubricant surface at
the side.

0.8

0.8

h(d1-1)

hd1

hD

hd

0.8

0.8

hD1

hd1

hD

0˚

0˚

12

　(2) Fixing method of shaft and inner ring
q Fix the inner ring at the position where the flange does not come in contact with the outer ring end. Fix it with
the clearance of 0.1 mm as a guideline. If interference between the inner ring flange and the outer ring end
due to thermal expansion/shrink of the shaft is concerned, adjust the clearance appropriately. (One straight
type screw per position is used)
w If the unit is used at a place or environment where vibration or impact is applied, provide seating at the set
screw position of the shaft with a file or borer.

J

h

J
3.2

h
w

S

eq

Recommended mating post tolerance is g6

eq

No. Description Qty

Material and remark

1

S45C

w Outer ring

1

Bronze with graphite oilless type(SO#50SP2)

Stopper pin for outer ring (SUJ2 1pce) is attached.

　(4) For greasing
Grease groove is provided at the outer ring. Greasing can improve wear resistance and durability.

To minimize thrust from the inner flange type bushing, solid
lubricant is embedded on the outer ring edge.

q Inner ring

e Hexagon socket head screw 2

Inner ring
d

Tolerance

25

D1

C

S

J

0
o0.013

43.5

31

18.3

8.3

47.5

34

19.7

8.7

57.5 38.1 22.2

9.7

33

30

40

35

0
o0.016

50

40

　(6) Measures for heat generation
If the unit is used at high temperature, thermal expansion (thrust direction) of the shaft occurs. If the flange type
inner ring is used, it is recommended to design the flange outside.

i0.021
0

Tolerance

28

20

　(5) Accuracy and design of shaft
The recommended tolerance of the mating shaft is g6. Since the inner ring slides with the outer ring, material
and hardness of the shaft is not particularly important. Heat treatment of the shaft surface is not required either.

45

Outer ring

d1

i0.025
0

50

65

74.5 49.2 30.2 15.7
0
o0.019

70

Catalog No.

Tolerance

d1

Tolerance

h

Case
No.

4

47

o0.080
o0.105

28

i0.061
i0.040

20

204

20

4

52

22

205

25

5

5

62

25

206

6

6

72

27

207

7

80

60

29

208

7

85

65

29

209

45

8

90

30

210

50

5

4

6
8

8
10

33
o0.100
o0.130

o0.120
o0.155

40

i0.075
i0.050

50

70

i0.090
i0.060

Catalog No.

SBSF
SBSS
Outer ring

SBSR

d

30
35
40

d

SBSF
SBSR

Order

D

Ma

79.5 49.2 30.2 15.7
84.5 51.6 32.6 17.6

f

M

67.5 42.9 25.4 11.9

60

SCM435

35
35

0.8

137

3.2

Slide Unit

hd1

hD

3.2

h

138