SKF FAG Tapered Roller Bearings Single Row 30307 30308 30309 High Precision For Auto Spares Parts
Description :
Model | 30309 |
Bearing material | GCr15/AISI52100/100Cr6 |
ID*OD*W (mm) | 45 x 100 x 27.25mm |
Seal type | double shields |
Lead time | Stock or 15-30days |
Weight(kg) | 0.97 |
Payment terms | T/T, L/C |
Limiting speed | 7000 r/min |
Clearance | C2,C0,C3,C4,C5 |
Viberation Level | V1,V2,V3,V4 |
Precision Rating | P0,P6,P5, |
MOQ | No MOQ |
Port | Shanghai |
Grease | Mobil polyrex EM,Kyodo Yushi SRL |
Advantage of tapered roller bearing
This conical geometry is used as it gives a larger contact patch, which permits greater loads to be carried than with spherical (ball) bearings, while the geometry means that the tangential speeds of the surfaces of each of the rollers are the same as their raceways along the whole length of the contact patch and no differential scrubbing occurs. When a roller slides rather than rolls, it can generate wear at the roller-to-race interface, i.e. the differences in surface speeds create a scrubbing action. Wear will degenerate the close tolerances normally held in the bearing and can lead to other problems. Much closer to pure rolling can be achieved in a tapered roller bearing and this avoids rapid wear.
Photo:
Drawing:
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Needle roller bearings
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Payment
1: T/T: 30% as deposit and 70% balance after get copy of B/L.
2: L/C (cannot for branded bearings.)
3: Discuss together between buyer and supplier.
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