Rotolin Type MSF

Type MSF SLIDING AND ROTARY MOTION BALL BUSHES

Flanged types of Rotolin sliding ball bushes are made a “push fit” into bored holes of correct diameter. This avoids any possible closing-in of the outer sleeve which could result in preloading and impair the ultra-smooth working action, it also serves to facilitate installation in their operating stations. These ball bushes are capable of providing first class, sliding fit on precision shafts without restriction on the length of travel, they are extensively employed for their adaptability, reliabity and general efficiency in service.

ENGINEERING DATA 

Series “MSF” bearings must be used with a clearance fit between the balls and the shaft. The housing and shaft tolerances stated must therefore be strictly adhered to in order to prevent excessive closing in of the bearing sleeve on assembly. The outer race and balls are of 535 A99 steel. Shafts should be hardened to at least 60 HRC and ground to at least 0.25um.

Metric Range

DIMENSIONS AND SPECIFICATIONS

Bearing Ref

B
Shaft Dia

D
Bearing O.D.

L+.000
 -.13

C

FW

FD

P
MSF 16-28162822.00141.635646
MSF 20-32203226.00161.636051
MSF 25-39253932.00201.636455
MSF 32-46324642.00302.037364
MSF 40-55405550.00362.038775
MSF 50-70507064.00502.0310495

SHAFT AND HOUSING TOLERANCES AND RESULTING FITS

 Bearing Ref Housing Dh* Shaft Bs Clearance Fit ‡ P Size Cap Screw Static Capacity KN
Min Max
 MSF 16-28 28.00 16.00 .002 .012 46

5mm 3-OFF

1.34
 MSF 20-32 32.00 20.00 51

5mm 3-OFF

1.91
 MSF 25-39 39.00 25.00 55

5mm 3-OFF

2.24
 MSF 32-46 46.00 32.00 64

5mm 3-OFF

4.18
 MSF 40-55 55.00 40.00 75

5mm 3-OFF

5.38
 MSF 50-70 70.00 50.00 95

5mm 4-OFF

9.34

Inch Range

DIMENSIONS AND SPECIFICATIONS

Bearing Ref

B
Shaft Dia

D
Bearing O.D.

L

+.000
-.005</>

C

FW

FD

P
MSF 500 – 8750.50000.87500.6250.406.0481.8121.5
MSF 625 – 10000.62501.00000.8120.500.0642.1871.812
MSF 750 – 12500.75001.25001.0000.625.0642.3752.000
MSF 875 – 15000.87501.50001.2500.812.0642.5312.187
MSF1000-16251.00001.62501.5001.062.0642.6872.312
MSF 1125- 17501.12501.75001.7501.312.0642.8752.531
MSF 1250- 18751.25001.87502.0001.562.0803.0002.656
MSF 1500 – 21251.50002.12502.2501.687.0803.4372.968
MSF 1750 – 26251.75002.62502.6252.062.0803.9373.468
MSF 2000 – 28752.00002.87503.0002.437.0804.0933.718

SHAFT AND HOUSING TOLERANCES AND RESULTING FITS

 Bearing Ref Housing Dh Shaft Bs Clearance Fit ‡ P Size Cap Screw Static Capacity Ibf
Min Max
 MSF 500 – 875 0.8750

+.0003 -.0002

0.5000

+.0000 -.0002

.0001 .0005 1.500

3BA 3-OFF

158
 MSF 625 – 1000 1.0000

+.0003 -.0002

0.6250

+.0000 -.0002

1.812

2BA 3-OFF

302
 MSF 750 – 1250 1.2500

+.0004 -.0002

0.7500

+.0000 -.0002

2.000

2BA 3-OFF

430
 MSF 875 – 1500 1.5000

+.0004 -.0002

0.8750

+.0000 -.0002

2.187

2BA 3-OFF

503
 MSF1000-1625 1.6250

+.0004 -.0002

1.0000

+.0000 -.0002

2.312

2BA 3-OFF

692
 MSF 1125- 1750 1.7500

+.0004 -.0002

1.1250

+.0000 -.0002

2.531

2BA 3-OFF

907
 MSF 1250- 1875 1.8750

+.0005 -.0002

1.2500

+.0000 -.0002

2.656

2BA 3-OFF

1195
 MSF 1500 – 2125 2.1250

+.0005 -.0002

1.5000

+.0000 -.0002

2.968

2BA 3-OFF

1612
 MSF 1750 – 2625 2.6250

+.0005 -.0002

1.7500

+.0000 -.0002

3.468

2BA 4-OFF

2978
 MSF 2000 – 2875 2.8750

+.0005 -.0002

2.0000

+.0000 -.0002

3.718

2BA 4-OFF

3733

Bearing reference indicates bearing type, shaft diameter and outside diameter.

‡ Between Shaft, Balls and Outer Sleeve I.D.

Larger, heavy duty and special types are available. Please contact us to discuss your requirements

Lubrication and Temperature Requirements

All bearings are supplied in rust preventative oil and should be cleaned and lubricated before use. Good quality medium oils and light ball bearing greases have the advantage of greater surface cohesion. High grade light oil will allow a higher operating speed and greater sensitivity to movement. Working temperatures under maximum load conditions should not exceed 120°C although the bearings can operate safely at slightly higher temperatures and under decreased load conditions, with special lubricants. For continuous high temperature operation, suitable grades of silicone grease should be used.

Translate »