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BR Series Overrunning Cam Clutch
BR Series Overrunning Cam Clutch
Product Detail

Dimensions and Capacities:

overrunning clutch Dimensions and Capacities


Model

BoreSize

A

B

C
(h7)

D
(h7)

E

F

MountingHoles

Pulloff Holes

H min

I

J

K

L

Mmax

Dia.(H7)

Keyway

ChamferO

PCD

No.-Dia.

No.-Size

G

Q-R

S-T

BR20

20

6x2.8

0.5

35

35

90

66

40.7

40.7

78

6-6.6

2-M6

53

0

0

5

5

4.0

BR25

25

8x3.3

0.5

35

35

95

70

44.7

44.7

82

6-6.6

2-M6

58

0

0

5

5

4.0

BR30

30

8x3.3

1.0

35

35

100

75

49.7

49.7

87

6-6.6

2-M6

64

0

0

5

5

4.0

BR35

35

10x3.3

1.0

35

35

110

80

54.7

54.7

96

8-6.6

2-M6

70

0

0

5

5

4.0

BR40

40

12x3.3

1.0

35

35

125

90

64.7

64.7

108

8-9.0

2-M8

81

0

0

5

5

4.0

BR45

45

14x3.8

1.0

35

35

130

95

69.7

69.7

112

8-9.0

2-M8

86

0

0

5

5

4.0

BR50

50

14x3.8

1.0

40

40

150

110

84.7

84.7

132

8-9.0

2-M8

103

0

0

7.5

7.5

6.5

BR60

60

18x4.4

1.5

60

50

175

125

80

80

155

8-11.0

2-M10

110

5

5

7

7

6.0

BR70

70

20x4.9

1.5

60

50

190

140

95

95

165

12-11.0

2-M10

125

5

5

7

7

6.0

BR80

80

22x5.4

1.5

70

60

210

160

115

115

185

12-11.0

2-M10

148

5

5

12

12

11.0

BR90

90

25 x5.4

1.5

80

70

230

180

135

135

206

12-13.5

2-M12

170

5

5

17

17

16.0

BR100

100

28x6.4

1.5

90

80

270

210

143

143

240

12-17.5

2-M16

180

5

5

13.7

13.7

12.0

BR130

130

32 x7.4

2.0

90

80

310

240

173

173

278

12-17.5

2-M16

210

5

5

13.7

13.7

12.0

BR150

150

36x8.4

2.0

90

80

400

310

243

243

360

12-17.5

2-M16

280

5

5

13.7

13.7

12.0

BR180

180

45x10.4

2.0

105

80

400

310

290

270

360

12-17.5

2-M16

280

5

20

11.5

15.9

14.0

BR190

190

45x10.4

2.0

105

80

420

330

310

286

380

16-17.5

2-M16

300

5

20

12.5

8.9

7.5

BR220

220

50x11.4

2.0

105

80

460

360

340

320

410

18-17.5

2-M16

330

5

20

12.5

10.9

9.0

BR240

240

56x12.4

2.0

105

80

490

390

370

350

440

18-17.5

2-M16

360

5

20

12.5

10.9

9.0


Model


Chamfer


U


Oil
PlugPosition/Dia.


Weight
(kg)


Inertial
Moment
GD2
(kgm
2)

N

P

V

W

X×PT-Y

BR20

1.5

1.5

30.0

17.5

4×PT-1/16

1.3

2.25×10-4

BR25

1.5

1.5

30.0

17.5

4×PT-1/16

1.4

3.28×10-4

BR30

1.5

1.5

30.0

17.5

4×PT-1/16

1.5

4.44×10-4

BR35

1.5

1.5

22.5

17.5

4×PT-1/8

1.9

5.65×10-4

BR40

1.5

1.5

22.5

17.5

4×PT-1/8

2.4

1.01×10-3

BR45

1.5

1.5

22.5

17.5

4×PT-1/8

2.6

1.22×10-3

BR50

2.5

2.0

22.5

20

4×PT-1/8

4.1

2.64×10-3

BR60

3.5

2.0

22.5

25

4×PT-1/8

7.3

3.73×10-3

BR70

3.5

2.0

15.0

25

4×PT-1/8

8.1

6.65×10-3

BR80

3.5

2.0

15.0

14

32

4×PT-1/8

12.0

1.77×10-2

BR90

3.5

2.0

15.0

19

32

4×PT-1/8

16.0

3.16×10-2

BR100

4.5

2.0

15.0

20

40

4×PT-1/4

23.0

6.31×10-2

BR130

4.5

2.0

15.0

20

40

4×PT-1/4

31.0

0.109

BR150

4.5

3.0

15.0

20

40

4×PT-1/4

58.0

0.365

BR180

4.5

3.0

15.0

20

40

4×PT-1/4

60.0

0.435

BR190

4.5

3.0

11.25

20

40

4×PT-1/4

65.0

0.563

BR220

4.5

3.0

10.0

20

40

4×PT-1/4

76.0

0.789

BR240

4.5

3.0

10.0

20

40

4×PT-1/4

84.0

1.05

Notes:

1. Package type Cam Clutches are allmade to order. To order, please refer tothe dimensiondiagram. Please inform usif the Cam Clutch is to be used in avertical application, and if the operatingenvironment temperature will be lessthan –5°C or more than +40°C.

2. There are cases when the free runningrotation speed of the inner race will belimited when package type CamClutches are installed horizontally,

3. If your application calls for a clutchengagement speed or inner race freerunning speed not listed in this catalog,please contact us .


Dimensions (Package Type):

br_2.png

Model

Bore Size
(H7)

Keyway

A

B

C
(h7)

D

PCD
E

F-G

weight
(
kg)

BR20P

20

6X2.8

87

79

94

35

78

6-M6×12

3.4

BR25P

25

8X3.3

89

81

98

40

82

6-M6×12

3.8

BR30P

30

8X3.3

94

85

103

45

87

6-M6×12

4.3

BR35P

35

10X3.3

94

85

112

50

96

8-M6×12

5.1

BR40P

40

12X3.3

100

91

130

55

108

8-M8×16

7.5

BR45P

45

14X3.8

100

91

135

60

112

8-M8×16

7.9

BR50P

50

14X3.8

107

98

152

70

132

8-M8×16

10.9

BR60P

60

18X4.4

122

112

180

80

155

8-M10×20

17.5

BR70P

70

20X4.9

128

118

190

90

165

12-M10×20

19.5

BR80P

80

22X5.4

148

134

210

105

185

12-M10×20

27

BR90P

90

25X5.4

152

138

235

120

206

12-M12×24

35

BR100P

100

28X6.4

186

172

275

140

240

12-M16×32

60

BR130P

130

32X7.4

208

188

314

160

278

12-M16×32

80

BR150P

150

36X8.4

226

204

400

200

360

12-M16×32

151

BR180P

180

45X10.4

240

218

400

220

360

12-M16×32

169

BR190P

190

45X10.4

250

242

420

240

380

16-M16×32

193

BR220P

220

50X11.4

250

242

460

260

410

18-M16×32

220

BR240P

240

56X12.4

260

252

490

280

440

18-M16×32

267


Mounting example:

Mounting example

install_open_diagram.png


Installation and Usage:

1. If you are installing the outer race first, check the precision of the fit. The tolerances for outer race mounting are shown in the tables at right. Verify that the correct tolerances can be obtained. Out of spec installation could damage the Cam Clutch.
2. To lubricate the Cam Clutch, apply lubricant at the outer circumference of the inner race (see installation diagram). Avoid over lubrication, as it will cause the Cam Clutch to generate excessive heat.
3. When using the Cam Clutch at a reduction gearbox, make sure that oil from the gearbox cannot enter the Cam Clutch. Service life can be significantly shortened if the Cam Clutch comes in contact with gear oils that contain viscosity enhancing additives. Refer to page 80 for lubrication guidelines.
4. When installing a cover or seal support over the outer race, use bolts with a tensile rating of 10.9 or greater. Use a sealing agent or packing material between the mating services to prevent leakage.


■ USING THE BR SERIES PACKAGE TYPE CAM CLUTCH

Similar to previous types, the package type Cam Clutch is designed into a ball bearing cassette that makes

installation with a torque arm and/or coupling fast and easy. The package type Cam Clutch is grease lubricated.

package_1.png

package_2.png

package_3.png

Installation and Usage:

1. We recommend using shaft tolerances of h6 or h7 for Cam Clutch installation.
2. Use a ISO R773 (DIN 6885.1) parallel key. Make sure that the key does not move in the keyway. A loose key will damage the Cam Clutch.
3. When installing the Cam Clutch over a shaft, please follow the procedure outlined below. Never hit the clutch with a steel hammer or apply unnecessary impact loads.
1) Verify the Cam Clutch direction of rotation. The arrow on the inner race shows the free running (cam disengaged) direction. Make sure that the direction of cam engagement matches the intended application.
2) Tap the inner race lightly with a soft hammer moving around the race circumference so the Cam Clutch moves slowly and uniformly onto the end of the shaft. Make sure that the outer race does not become dislodged.
3) Place an end plate over the inner race and use the mounting bolts to pull the Cam Clutch onto the shaft as shown in the diagram at right.
4) Tighten the end plate securely to make sure that the Cam Clutch cannot move on the shaft.
4. If you using a torque arm, make sure that the bolts used to mount the torque arm have a tensile strength of 10.9 or greater, and tighten them securely.
5. Set a 2mm clearance between the torque arm and the torque arm stopper. If the torque arm is rigidly mounted, it will be applying a load to the Cam Clutch which can eventually damage it.
6. Install an appropriate coupling if there is a chance that the shaft will elongate from thermal expansion as encountered in some exhaust fan auxiliary drive system applications.
7. If thrust loads are encountered, install a thrust bearing which will prevent those thrust loads from being transferred to the Cam Clutch.
8. The Cam Clutch is pre-packed with grease before shipment and is ready for installation and operation. Refer to page 80 for lubrication guidelines.


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