ABEC5 Inch Taper Roller Bearing Single Row HM212049 For Excavator

1.Tolerances

The inner rings with roller and cage assembly and outer rings of MIRU tapered roller bearings having the same designation are interchangeable. The tolerance for the total abutment width T of the bearing will not be exceeded if the cones and cups are interchanged.
Metric bearings

MIRU single row metric tapered roller bearings are manufactured to Normal tolerances as standard. Some bearings are also available with reduced width tolerance to tolerance class CLN specifications. Bearings having a J in the prefix are produced as standard to tolerance class CLN specifications. 
All bearings having an outside diameter above 420 mm have dimensional accuracy to tolerance class Normal specifications but the running accuracy is better than Normal, being to P6 specifications. 
The values for Normal and CLN tolerances correspond to ISO 492:2002 (classes Normal and 6X). The values for P6 running accuracy are in accordance with DIN 620-3:1964, which was withdrawn in 1988.
Inch bearings

MIRU single row inch tapered roller bearings are produced to Normal tolerances as standard. On request, they may be supplied with higher accuracy to CL3 or CL0 tolerance class specifications and/or reduced width tolerances. Cones and cups having a width tolerance that differs from the Normal tolerance are identified by a designation suffix according to table where the actual tolerance values are provided. 
The values for CL3, CL0 and Normal tolerances conform to ANSI/ABMA Standard 19.2-1994. The ISO standard 578:1987, which also covered these tolerance classes, was withdrawn in 1997.
CL7C specification bearings

The tolerances for CL7C specification bearings correspond to Normal tolerances except for the running accuracy which has been tightened considerably.

2.Internal clearance and preload

The internal clearance of single row tapered roller bearings can only be obtained after mounting and is determined by adjustment of the bearing against a second bearing, which provides location in the opposite direction. Further details can be found in the section Bearing preload.

Competitive Advantage:
 
1.  We have our own factory.
2.  Standard packing can be changed as your requirement.
3.  The bearing cage could select according to your request.
4.  size and color can be customized
5.  Good communication sales team.
6.  Quality Confirmation.
7.  Experienced history.
8. Professional Team.
9.  Good service.
10.  Competitive price.

Single-Row Tapered Roller Bearings 

The most basic and widely used tapered bearing, the single row type consists of the cone assembly and the cup.It is usually fitted as one of an opposing pair.During equipment assembly, singlerow bearings can be set to the required clearance (endplay) or preload condition to optimize performance.Single row tapered roller bearings have positive roller alignment that ensures true rollingmotion and generates a “seating force” that pushes the roller against the cone large rib. This seating force prevents the rollers from skewing off apex, thereby keeping them positively aligned and located against the cone large rib.

Mr. Brian PARK Tel: 86-510-86519953
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