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 | D | L+.000 | C | FW | FD | P | |
| MSF 16-28 | 16 | 28 | 22.00 | 14 | 1.63 | 56 | 46 | |
| MSF 20-32 | 20 | 32 | 26.00 | 16 | 1.63 | 60 | 51 | |
| MSF 25-39 | 25 | 39 | 32.00 | 20 | 1.63 | 64 | 55 | |
| MSF 32-46 | 32 | 46 | 42.00 | 30 | 2.03 | 73 | 64 | |
| MSF 40-55 | 40 | 55 | 50.00 | 36 | 2.03 | 87 | 75 | |
| MSF 50-70 | 50 | 70 | 64.00 | 50 | 2.03 | 104 | 95 | |
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 | D | L | +.000 | C | FW | FD | P |
| MSF 500 – 875 | 0.5000 | 0.8750 | 0.625 | 0.406 | .048 | 1.812 | 1.5 | |
| MSF 625 – 1000 | 0.6250 | 1.0000 | 0.812 | 0.500 | .064 | 2.187 | 1.812 | |
| MSF 750 – 1250 | 0.7500 | 1.2500 | 1.000 | 0.625 | .064 | 2.375 | 2.000 | |
| MSF 875 – 1500 | 0.8750 | 1.5000 | 1.250 | 0.812 | .064 | 2.531 | 2.187 | |
| MSF1000-1625 | 1.0000 | 1.6250 | 1.500 | 1.062 | .064 | 2.687 | 2.312 | |
| MSF 1125- 1750 | 1.1250 | 1.7500 | 1.750 | 1.312 | .064 | 2.875 | 2.531 | |
| MSF 1250- 1875 | 1.2500 | 1.8750 | 2.000 | 1.562 | .080 | 3.000 | 2.656 | |
| MSF 1500 – 2125 | 1.5000 | 2.1250 | 2.250 | 1.687 | .080 | 3.437 | 2.968 | |
| MSF 1750 – 2625 | 1.7500 | 2.6250 | 2.625 | 2.062 | .080 | 3.937 | 3.468 | |
| MSF 2000 – 2875 | 2.0000 | 2.8750 | 3.000 | 2.437 | .080 | 4.093 | 3.718 | |
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 | ||
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Bearing reference indicates bearing type, shaft diameter and outside diameter. |
‡ Between Shaft, Balls and Outer Sleeve I.D. |
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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.
