Outline of Spherical Bushing Unit██Operation Range●range of pillow type (operation range without lubrication, in the atmosphere and at normal temperature)●Operation

Pillow type
PUFBF

PUFBS

PUSBF

PUSBS

Inner ring flange type

Inner ring flange type

Inner ring straight type

Inner ring straight type

Casting case

Stainless steel case

Casting case

Stainless steel case

Rhomboid flange type
DUFBF

DUFBS

DUSBF

DUSBS

Shaft
Maximum radial Load W
Maximum Revolution N
Allowable W-N Value
diameter（N）（rpm）（N・rpm）
（ｄ）
204
20
20000
170
9.5×105
205
2523700
145
10.8×105206
3027500
11512.7×105
207
35
32500
95
14.7×105
208
403750080
15.2×105
209
45
42500
70
15.2×105
210
50
43500
65
15.9×105
2042026500170
9.5×105205
2531500
145
10.8×105
206
30
36500
115
12.7×105
207
35
43000
95
14.7×105
208
40
43500
80
15.2×105
209
45
43500
70
15.2×105
210
50
43500
65
15.9×105＊	 For thrust load of the inner ring flange type, use 1/10 of the radial load in the table above.
Casematerial

Shaft
Maximum radial Load  W
Maximum Revolution N
Allowable W-N Value
diameter（N）（rpm）（N・rpm）（ｄ）
204
205500170
9.3×105205257000
145
10.1×105
206
30
8500
115
9.7×105
207
35
10000
95
9.5×105
208
40
11500
80
9.2×105
209
45
13500
70
9.4×105
210
50
15000
65
9.7×105204
2011500170
9.5×105
205
25
14000
145
10.8×105
206
30
17000
115
12.7×105
207
35
20000
95
14.7×105
208
40
23500
80
15.2×105
209
45
27000
70
15.2×105
210
50
30500
65
15.9×105＊	 For thrust load of the inner ring flange type, use 1/2 of the radial load in the table above.

Inner ringstraight type

Inner ringstraight type

Stainless steel case

Casting case

Stainless steel caseIf you wish to have a case other than the shapes above,please contact our sales office.
●spherical bushing has two types of inner ring , flange and straight.
●TheFlange type
SBSF

Straight type
SBSS
Outer ring SBSR

Outer ring SBSR

CaseNo.

Stainless steel case Gray Cast Iron Case

Casting case

Inner ringflange typeOperation
Temperature（ ℃）－ 50～ 150

Alignment
Angle（ °）767676－ 50～ 30076●
range of rhomboid flange type (operation range without lubrication, in the atmosphere and at normal temperature)●Operation
Casematerial

Inner ringflange type

CaseNo.

Stainless steel case Gray Cast Iron Case██Types and features of spherical bushing unit
●are 8 types of standard units according to the case shape, material and inner ring shape.
●ThereOperation
Temperature（ ℃）－ 50～ 150

Alignment
Angle（ °）767676－ 50～ 30076

※ If the unit is used exceeding the temperature of 100℃ , the operation range is different. (Refer to the graph below.)※ If the unit is used exceeding the temperature of 150 ℃ , the specification of the outer ring is different. Contact the sales
representative.
※ If the unit is used exceeding the temperature of 150℃ , use the stainless case type.

Inner ring Flange bushing

Inner ring straight bushing●the sales representative for the following cases.
●Contact※ The loading direction is not downward and A or B in the figure in the right.
※ Operation is performed under the environment not specified in the table above.
※ The outer ring material is changed.
• Loading direction of Pillow Type●●Features• The unit can be used without lubrication.
• The unit can be used at the ambient temperature of -50 ℃ to +150 ℃ .(If bushing is used exceeding +150 ℃ , pleasecontact our sales office.) The unit can be used under environment where dust or sand can easily enter.
• The unit can be used for rotation or oscillation.
• It is excellent in operation at high load and low speed.
• Flange type can withstand thrust load.
• The unit can be used without heat treatment or surface treatment on the shaft.
• Extension or shrink in the axial direction can be allowed.

• Loading direction of rhomboid Flange TypeBBAA• Reduction ratio of W and W-N values at operation temperature100Slide Unit

Reduction ratio（％）

12080604020050100150200250

300

Operation temperature（℃）

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Outline of Spherical Bushing Unit

Spherical Bushing Set

RoHS██For operation of spherical bushing unit
（1）Assembly and fixing method of unit
①	 Insert the unit at the specified position of the shaft.

SBSF（Inner ring flange type）
SBSS（Inner ring straight type）
SBSR（② , Outer Ring Only）②	 Fix the inner ring and the shaft with set screws.
③	 Fix the case with bolts.
・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.)

SBSSJ

1.6

②

3.2

h②	 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.

12φd③①No.
Description
Qty
Material and remark
1 S45C Non-electrolytic nickel plating① Inner ring
1 Copper alloy with graphite (SO#50SP2)② Outer ring  
③ Hexagon socket head screw 2 SCM435

Inner ring
Tolerance

2025+0.021
030

Outer ringd1Tolerance

D1CS

J

28

0－0.013

43.5

31

18.3

8.3

47.5

34

19.7

8.7

0－0.01657.5 38.1 22.2

9.7

33
40

3550

67.5 42.9 25.4 11.9

4060

74.5 49.2 30.2 15.7

45+0.025050

65

0－0.01970M

Ma54656879.5 49.2 30.2 15.7
84.5 51.6 32.6 17.6

Catalog No.

dSBSF

35SBSR

35810fDTolerance

d1Tolerance

hCaseNo.

447－0.080－0.10528+0.061+0.040

20204

45233

22205

562

40

25

206

672

780

785

890

－0.100－0.130－0.120－0.155+0.075+0.050Catalog No.

d2025
SBSF
SBSS

30
3550

27207

60

29208

29

209

45

30

210

50

65
70

+0.090+0.060Outer ring

SBSR

40

Slide UnitOrder③①

S

Recommended mating post tolerance is g6To minimize thrust from the inner flange type bushing,solid lubricant is embedded on the outer ring edge.
Stopper pin for outer ring (SUJ2, 1pce) is attached.

dφ(d1-1)

1.6

S（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.

1.6

1.6

1.6

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

φd1

SφD

φdφD1

φd1

SφD1.6

1.60˚（4）For greasing
Grease groove is provided at the outer ring. Greasing can improve wear resistance and durability.

2-Ma0˚②	 When a flange type is used, make assembly so that the flange area may match the solid lubricant surface at the side.

f12（3）For thrust load
①	 If thrust load is applied, use the flange type inner ring. Solid lubricant is embedded at one side of the outer ring.

Jh②2-MfC
3.2

C

3.2

SBSF

3.2

（2）Fixing method of shaft and inner ring
①	 Fix the inner ring at the position where the flange does not come in contact with the outer ring end. Fix it with theclearance 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 isused)

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