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PRODUCT

30300 series bearings are one series of tapered roller bearings. The bearing is a radial thrust type rolling bearing in which the rolling elements are tapered rollers, and they are constructed for high loads. At the same time, they are relatively narrow as regards its inner and outer diameter.


Tapered roller bearings are usually of a separate type, ie a conical inner ring assembly consisting of an inner ring with a roller and cage assembly can be mounted separately from the outer bevel (outer ring).


30300 Series belong to the separated type bearings, and the inner and outer ring of the bearings have conical row raceways. When the conical roller bearing equipment needs regular maintenance, operation and peripheral parts are changed, it is necessary to judge whether the bearing parts can be used again and record the operation status. If any of the inner and outer rings, rollers, or retainers are cracked or fragmented, the surface of inner and outer ring or rolling body will be peeled off. The raceway surface, side stop or rolling body is obviously stuck. Serious wear of cage or obvious loosening of rivet. The raceway surface and the rolling body are rusty and scarred. Marked indentation on rolling surface or rolling body. Having traces of movement on the inner diameter of the inner ring or on the outer diameter of the outer ring. Surface discoloration caused by overheating. Damage of sealing ring and dust cover of grease seal bearing. These circumstances require timely replacement of the bearing.


Applications

They are mainly used in hob bearing of truck, shaft of large machine tool, wheel shaft box, large reducer, bearing of rollers of steel mill, etc.


Bearing ModelDimensions(mm)Basic Load Rating(kN)Limiting Speed(rpm)Weight(kg)
dDBDyn.CStat.CoGreaseOil
3030215421322.921.79000130000.095 
3030317471428.227.28500110000.129 
3030420521530.528.48300110000.170 
3030525621746.848630080000.263 
303063072215963560070000.387 
3030735802175.282.5500063000.515 
3030840902390.8108450056000.747 
303094510025108130400050000.984 
303105011027130158380048001.280 
303115512029152188340043001.630 
303126013031170210320040001.990 
303136514033195242280036002.440 
303147015035218272260034002.980 
303157516037252318240032003.570 
303168017039278352220030004.270 
303178518041305388200028004.960 
303189019043342440190026005.800 
303199520045317368200026006.320 
3032010021547344400180024007.760 
3032110522549432568160022009.910 
30322110240504716191600220011.500 
30324120260555627541500200013.700 
30326130280586398641300180017.100 
30328140300627219851200170021.700 
303301503206582510601100160028.500 
303321603406888014001100160029.000 
303341703607210201340950140035.000 


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