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KOYO / Single-row / inch series

KOYO L21549/11

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

Technical data available
Bore diameterd
15.875 mm
Outside diameterD
34.988 mm
WidthB
10.998 mm
Dynamic load ratingC
18.1 kN
Static load ratingC0
14.3 kN
Limiting speednG
12000 r/min

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 specifications9 parameters
Core specifications
ParameterSymbolValue
Variant / constructionSingle-row / Inch series
Bore diameterd15.875 mm
Outside diameterD34.988 mm
WidthB10.998 mm
Basic dynamic load ratingC18.1 kN
Basic static load ratingC014.3 kN
Fatigue load limitPu1.9 kN
Limiting speednG12000 r/min
Mass≈m0.049 kg
Manufacturer Identity2 parameters
Manufacturer Identity
ParameterSymbolValue
BrandKOYO
Official Class Key050-010-020
Classification2 parameters
Classification
ParameterSymbolValue
Official Category PathTapered roller bearings - Single-row - Inch series
Official Classification 1Tapered roller bearings / Single-row / Inch series
Technical Data23 parameters
Technical Data
ParameterSymbolValue
d15.875 mm
D34.988 mm
T10.998 mm
B10.998 mm
C8.712 mm
R(Min.)1.2 mm
R1(Min.)1.2 mm
Basic Load Ratings : Cr18.1 kN
Basic Load Ratings : C0R14.3 kN
Fatigue Load Limit : Cu1.90 kN
Limiting Speeds(Grease Lub.)12000 min-1
Limiting Speeds(Oil Lub.)16000 min-1
Load Center Spread : A7.6 mm
Constant :E0.32
Axial Load Factors : Y11.88
Axial Load Factors : Y01.04
Da21.5 mm
Db19.5 mm
Da29.0 mm
Db32.5 mm
Ra(Max.)1.2 mm
Rb(Max.)1.2 mm
Mass(Refer.)0.049 kg

Technical documents & data sheet

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Record identity
KOYO L21549/11
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