NP647639 / NP673496 / NP682333
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All Data Sourced from Official Brands
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Brand Alternative Bearings with Identical Specifications
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Customized Bearing Solutions Based on Parameters
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OEM and Flexible Order Quantities Supported
Specifications
Availability: 100 PCS
Brand: HSN/ Timken/ OEM
Bearing Number: NP647639 / NP673496 / NP682333
Category: Tapered Roller Bearings
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Weight and Dimensions
Bore (d): 400 mm 15.7480 in
Outside Diameter (D): 540 mm 21.2598 in
Width Over Cups (T): 280 mm 11.0236 in
Width Over Cones (B): 280 mm 11.0236 in
Weight: 178 KG 392 lbs
Data from Timken (medias)
Dynamic Radial Load Rating (C1-4 row): 4100 KN 924000 lbf
Dynamic Radial Load Rating (C90): 306 KN 68700 lbf
Dynamic Radial Load Rating (C90-4 row): 1064 KN 240000 lbf
Dynamic Axial Load Rating (Ca90): 339 KN 76200 lbf
e Factor: 0.65
Y1 Factor: 1.04
Y2 Factor: 1.55
K Factor: 0.90
Product Properties
Precision: P0, P6, P5
Hardness: HRC58-62
Ring Material: GCr15, GCr15SiMn, 100CrMnSi6-4, etc.
Cage Material: Brass, Steel
Certificate: ISO9001:2015
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Downloads & Links
Timken Tapered Roller Bearings Guide
Product Description
The Timken NP647639 / NP673496 / NP682333 four-row tapered roller bearing features a TQOW configuration consisting of two double cones, four rows of tapered rollers and cages, one cone spacer, two single cups, two cup spacers, and one double cup. This design provides high radial and axial load capacity, excellent rigidity, and reliable stability under heavy combined loads. Lubrication slots on the cone faces facilitate lubricant distribution, while the hardened cone spacer helps minimize face wear and supports long-term bearing performance.
The Timken NP647639 / NP673496 / NP682333 bearing is designed for rolling mill roll-neck applications, including work rolls, intermediate rolls, and backup rolls in flat product mills, as well as work rolls in long product mills. Its robust four-row construction supports heavy rolling loads, stable roll positioning, and consistent performance under demanding operating conditions. HSN provides replacement bearing solutions for United States steel mills, OEM equipment manufacturers, and industrial distributors seeking alternatives to Timken NP647639 / NP673496 / NP682333 bearings.
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