we are a professinal supplier and manufactor of wheel bearing contact me for price,product,delivery terms sherry Mail:shiw.sherry@!gmail.com Specifications1. bearings:d, 150mm ~ 1778mm 2.Precision: P0, P6, P5, P4 3.Raw material: GCr15SiMn or G20Cr2Ni4A 4.The cage material: Steel Large-size tapered roller bearings: 1) Range of dimensions: single-row tapered roller bearings:d, 150mm ~ 950mm D,270mm ~1250mm Double-row tapered roller bearings: D,300mm~2159mm Four-row tapered roller bearings: d,150mm-1580mm D,210mm~1960mm 2) Precision: P0, P6, P5, P4 3) Raw material: GCr15SiMn or G20Cr2Ni4A 4) The cage material: Steel 5) Clearance: C1, C2, C0, C3, C4 Taperded roller bearings The tapered roller bearings are separable type bearings, the raceway of inner ring and outer ring is tapered, According to the number of row of rollers, this type of bearings can be divided into single, double and four rows tapered roller bearings.Inch serice tapered roller bearings. Application area: The taperde roller bearings are widely used real wheel hubs of automotives ,spindles of large machine tools, large power gear boxes.amd transmission michanism. The type TDI double –row taperde roller bearings have a outer ring spacer,the clearance is adjustable ,these bearings mainly used in roll neck under moderate loads. The four-row taperde roller bearings are mainly used in the working roll neck of hot rolling mills and cold rolling mills, and roll neck of big mills, In order to be mounted and dismounted conveniently ,the loose fit with roll neck is usually chosen.