UCP 203 Bearing Specifications
| Pillow Block Ball Bearings No. | Shaft Dia | Dimensions(mm) | |||||
| d | |||||||
| mm | h | a | e | b | S1 | S2 | |
| UCP 203 | 17 | 30.2 | 127 | 95 | 38 | 13 | 19 |
| Pillow Block Ball Bearings No. | Shaft Dia | Dimensions(mm) | |||||
| d | |||||||
| mm | g | w | n | Bi | Weight | ||
| UCP 203 | 17 | 14 | 62 | 12.7 | 31.0 | 0.66 | |
Quality Guarantee Process of UCP 203
Raw material
Inspection report from supplier,The 3rd party’s test report.
Turning
Self inspection ,Patrol inspector check the tolerance during production.
Heat treatment
Test report from supplier Sample test from NSAR Lab.
Grinding
Automatic CNC grinding machine, SPC control system, patrol instrument Process tolerance check.
Assembly
100% inspection before assembly Inspection by patrol inspector.
Inspection
100% vibration & appearance inspection.
Packing&delivery
Inspector spot-check before packing & packing inspection before delivery.
UCP 203 Selection of Shafts
The ball bearing unit is provided with two hexagonal setscrews 120° apart on one side of the inner ring .Under normal operating conditions,the inner ring is mounted on shaft by means of a Clearance fit to ensure convenience of installation.In this case the dimensional accuracy of the shaft is shown in Table.
Dimemsional accuracy of the shaft to be used in the cylindrical bore bearing (Clearance fit) Unit:μm
UCP 203 selection of shafts
| Shaft Diameter(mm) | Deviation of tolerance in shaft | ||||||||
| for low speed | for medium speed | for rather high speed | for high speed | ||||||
| h9 | h8 | h7 | j6 | ||||||
| over | incl. | max. | min. | max. | min. | max. | min. | max. | min. |
| 10 18 30 50 80 120 | 18 30 50 80 120 180 | 0 0 0 0 0 0 | -43 -52 -62 -74 -87 -100 | 0 0 0 0 0 0 | -27 -33 -39 -46 -54 -63 | 0 0 0 0 0 0 | -18 -21 -25 -30 -35 -40 | +8 +9 +11 +12 +13 +14 | -3 -4 -5 -7 -9 -11 |
When the ball bearing is used at a high speed or under a heavy load, the inner ring of the ball bearing should be mounted to the shaft by means of a Interference fit.As shown in Table.
Dimensional accuracy of the shafts to be used in the cylindrical bore bearings(Interference fit) unit:μm
UCP 203 Shaft Diameter (mm)
| Shaft Diameter(mm) | Deviation of tolerance in shaft | ||||||||
| higher speed | rather heavy load | highest speed | heavy load | ||||||
| m6 | m7 | n7 | n7 | ||||||
| over | incl. | max. | min. | max. | min. | max. | min. | max. | min. |
| 10 18 30 50 80 120 | 18 30 50 80 120 180 | +18 +21 +25 +30 +35 +40 | +7 +8 +9 +11 +13 +15 | +25 +29 +34 +41 +48 +55 | +7 +8 +9 +11 +13 +15 | +23 +28 +33 +39 +45 +52 | +12 +15 +17 +20 +23 +27 | +30 +36 +42 +50 +58 +67 | +12 +15 +17 +20 +23 +27 |
Some bearings can be installed to the shaft by means of adapter sleeves.In this method,the bearing bore is made of 1:12 taper and the corresponding tapered adapter sleeve is applied.This is a convenient method that can be used as the intermediate bearing of a long shaft.In this case, the dimensional accuracy of shaft is shown in Table.
Dimensional accuracy of shaft to be used in tapered bore bearing.
unit:μm
UCP 203 deviation of tolerance in shaft
| Shaft Diameter(mm) | Deviation of tolerance in shaft | ||||
| for short shaft | for long shaft | ||||
| h9 | h10 | ||||
| over | incl. | max. | min. | max. | min. |
| 10 18 30 50 80 120 | 18 30 50 80 120 180 | 0 0 0 0 0 0 | -43 -52 -62 -74 -87 -100 | 0 0 0 0 0 0 | -70 -84 -100 -120 -140 -160 |
Wholesale UCP 203 | UCP 203 Supplier
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