HM258949D / HM258910 / HM258910D
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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: HM258949D / HM258910 / HM258910D
Category: Tapered Roller Bearings
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Weight and Dimensions
Bore (d): 304.800 mm 12.0000 in
Outside Diameter (D): 501.650 mm 19.7500 in
Width Over Cups (T): 336.547 mm 13.2499 in
Width Over Cones (B): 336.550 mm 13.2500 in
Weight: 268 KG 592 lbs
Data from Timken (medias)
Dynamic Radial Load Rating (C1-4 row): 6240 KN 1404000 lbf
Dynamic Radial Load Rating (C90): 465 KN 105000 lbf
Dynamic Radial Load Rating (C90-4 row): 1618 KN 364000 lbf
Dynamic Axial Load Rating (Ca90): 265 KN 59500 lbf
e Factor: 0.33
Y1 Factor: 2.03
Y2 Factor: 3.03
K Factor: 1.76
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 HM258949D / HM258910 / HM258910D four-row tapered roller bearing features a TQO configuration consisting of two double cones without face slots, four rows of tapered rollers and cages, two single cups, one double cup, one cone spacer, and two cup spacers. This design provides high radial and axial load capacity, excellent structural rigidity, and reliable stability under heavy combined loads. The robust four-row arrangement helps distribute rolling forces evenly, while the cone and cup spacers maintain proper axial spacing and support stable bearing operation.
The Timken HM258949D / HM258910 / HM258910D bearing is engineered 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 HM258949D / HM258910 / HM258910D bearings.
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