Four Row Tapered Roller Bearing LM772749D-710-710D

Four-row tapered roller bearings are widely used for various rolling mills. That's because they can both withstand loads from 2 directions. Tedin is a professional in designing and manufacturing large-size tapered roller bearings for heavy industries.

Tedin's advantages:

1. High Purity Material:

Through-hardened material: DAYE steel or BAOSHAN steel GCr15SiMn, GCr18Mo, 100CrMo7-4, or imported OVAKO steel;

Case-hardened material: DAYE steel or BAOSHAN steel G20Cr2Ni4A, or imported OVAKO steel and TIMKEN steel;

2. High Precision:

For roll neck bearings for rolling mills: ISO Grade P5, P4;

For backup roll bearings for Z-mills: ISO Grade P4,

The interface height difference of all bearings on the same shaft ≤ 0.005mm.

The difference between the wall thickness of adjacent bearings ≤ 0.002mm.

3. Crowned inner ring, raceway & rollers: Tapered rollers of TRB: with logarithmic profile,

4. Consistency of roller profiles and sizes

The tapered rollers of the double row and four-row tapered roller bearings are manufactured to such close dimensional and geometrical tolerances that they are practically identical. This provides optimal load distribution, reduces noise and vibration, and enables preload to be set more accurately.

5. Improved fatigue life

6. Reduced noise vibration

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