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TIMKEN / Ts - tapered single

TIMKEN HM88649A / HM88613

Tapered roller bearings technical reference with manufacturer-sourced dimensions, characteristics and engineering resources.

Technical data available
Bore diameterd
34.925 mm
Outside diameterD
73.025 mm
WidthB
27 mm
Dynamic load ratingC
76.8 kN
Static load ratingC0
94.2 kN
Mass≈m
0.53 kg

Use this page as a technical reference. Verify the current manufacturer specification and the complete application requirements before selection.

Technical data

Product specifications

Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.

Core specifications11 parameters
Core specifications
ParameterSymbolValue
SeriesHM88600
Variant / constructionTS - Tapered Single
Bore diameterd34.925 mm
Outside diameterD73.025 mm
WidthB27 mm
Basic dynamic load ratingC76.8 kN
Basic static load ratingC094.2 kN
Mass≈m0.53 kg
Precision classABMA Class 7
SealingOpen
CageSteel cage
Calculation Factors6 parameters
Calculation Factors
ParameterSymbolValue
K Factor1.07
Y1 Factor1.10
Y2 Factor0.00
Y0 Factor0.60
E Factor0.55
Cg Factor0.0822
Manufacturer Identity9 parameters
Manufacturer Identity
ParameterSymbolValue
BrandTimken
Material Number000000000100025260
World Assembly Part NumberHM88649A_HM88613
Inner Ring Part NumberHM88649A
Outer Ring Part NumberHM88613
Drawing NumberA-43704
Upc0053893659053
Official Source SystemCORE BP - DS DF
Official Last Run2026-08-23T20:02:47.163
Product Identity4 parameters
Product Identity
ParameterSymbolValue
Type DescriptionTS - Tapered Single
ConstructionSingle Row Tapered Roller Bearing Assembly | Imperial Series | 1.3750 in Bore | 2.8750 in OD | 1.0630 in Width | Open | Cylindrical Bore | Steel Cage | Precision ABMA Class 7
Number Of Rows1
Tapered BoreN
Technical Data10 parameters
Technical Data
ParameterSymbolValue
Overall Width28.900 mm
Radial Rating19,900 N
Axial Rating18,600 N
Dynamic Rating C176,800 N
Dynamic Rating C9019,900 N
Dynamic Axial Rating Ca9018,600 N
Dynamic Axial Rating Ca171,800 N
Static Radial Rating C094,200 N
Extended Dynamic Rating Ce0 N
Static Axial Rating C0A150,000 N

Technical documents & data sheet

This product page is a BearingScope catalogue reference, not a manufacturer-certified drawing. Preserve the full brand and designation when comparing files.

Record identity
TIMKEN HM88649A / HM88613
Document matching
Exact designation, assembly scope, revision and units must agree.

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