78215C / 78551
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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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Fast Quotation Response
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OEM and Flexible Order Quantities Supported
Specifications
Availability: 100 pcs
Brand: HSN/ TIMKEN/ OEM
Bearing Number: 78215C / 78551
Category: Tapered Roller Bearings
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Weight and Dimensions
Bore (d): 53.975 mm 2.1250 in
Outer (D): 140.030 mm 5.5130 in
Width (T): 36.512 mm 1.4375 in
Width (B): 33.236 mm 1.3085 in
Width (C): 23.520 mm 0.9260 in
Weight: 2.74 kg
Data from Timken (medias)
Dynamic Radial Load Rating – 1M Revs (C1): 237000 N
Dynamic Radial Load Rating – 90M Revs (C90) : 61300 N
Dynamic Axial Rating – 90M Revs (Ca90): 90900 N
Static Radial Load Rating (C0): 234000 N
e Factor: 0.87
K Factor: 0.67
Y Factor: 0.69
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 78215C / 78551 Timken tapered roller bearing features a single-row design consisting of an inner ring assembly (cone), an outer ring (cup), and a single row of tapered rollers. This configuration provides reliable radial and axial load support, high rigidity, and stable performance under demanding operating conditions. The separable cone and cup design allows convenient mounting and adjustment, while the bearing can be set to the required endplay or preload during assembly to optimize operating performance.
The 78215C / 78551 bearing is widely used in automotive applications, transmission systems, machine tool spindles, pumps, agricultural machinery, construction equipment, and other industrial applications. It is particularly suitable for applications requiring controlled bearing clearance or preload, accurate shaft positioning, and reliable support for combined radial and axial loads.
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