99,016 bearing records · search, filter and compare

TIMKEN / Cylindrical 1-row

TIMKEN Y-345-B

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

Technical data available
Bore diameterd
508 mm
Outside diameterD
616 mm
WidthB
82.55 mm
Dynamic load ratingC
1580 kN
Static load ratingC0
3680 kN
Mass≈m
50 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 specifications10 parameters
Core specifications
ParameterSymbolValue
SeriesNCS-450586
Variant / constructionCylindrical 1-Row
Bore diameterd508 mm
Outside diameterD616 mm
WidthB82.55 mm
Basic dynamic load ratingC1580 kN
Basic static load ratingC03680 kN
Mass≈m50 kg
SealingOpen
CageWindow Brass cage
Calculation Factors6 parameters
Calculation Factors
ParameterSymbolValue
K Factor0.00
Y1 Factor0.00
Y2 Factor0.00
Y0 Factor0.00
E Factor0.00
Cg Factor0.2684
Manufacturer Identity9 parameters
Manufacturer Identity
ParameterSymbolValue
BrandTimken
Material Number000000000190076298
World Assembly Part NumberY-345-B
Inner Ring Part NumberY-383-C
Outer Ring Part NumberY-384-C
Drawing NumberM962537
Upc0013992460332
Official Source SystemCORE BP - DS DF
Official Last Run2026-08-23T20:02:47.757
Product Identity4 parameters
Product Identity
ParameterSymbolValue
Type DescriptionCylindrical 1-Row
ConstructionSingle Row Cylindrical Roller Bearing | Imperial Series | 20.0000 in Bore | 24.2520 in OD | 3.2500 in Width | Open | Cylindrical Bore | Machined Window Brass Cage | C3 Clearance
Number Of Rows1
Tapered BoreN
Technical Data10 parameters
Technical Data
ParameterSymbolValue
Overall Width0.000 mm
Radial Rating1,580,000 N
Axial Rating0 N
Dynamic Rating C11,580,000 N
Dynamic Rating C900 N
Dynamic Axial Rating Ca900 N
Dynamic Axial Rating Ca10 N
Static Radial Rating C03,680,000 N
Extended Dynamic Rating Ce0 N
Static Axial Rating C0A0 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 Y-345-B
Document matching
Exact designation, assembly scope, revision and units must agree.

No verified redistributable CAD or manufacturer PDF is registered for this exact model. A catalogue image is not a dimensioned drawing. Missing technical files are not generated or replaced with unrelated models.

Look up another model or check drawing requirements →

Search the consolidated catalogue

Find, filter and compare bearing model data in one place.

Open model search