99,016 bearing records · search, filter and compare

KOYO / Radial needle roller and cage assemblies / metric series / k,k.zw

KOYO K55X63X25

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

Technical data available
Dynamic load ratingC
49.8 kN
Static load ratingC0
96.5 kN
Limiting speednG
5000 r/min
Mass≈m
0.08 kg
Fw
55 mm
Ew
63 mm

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 specifications6 parameters
Core specifications
ParameterSymbolValue
Variant / constructionRadial needle roller and cage assemblies / Metric series / K,K.ZW
Basic dynamic load ratingC49.8 kN
Basic static load ratingC096.5 kN
Fatigue load limitPu15.1 kN
Limiting speednG5000 r/min
Mass≈m0.08 kg
Manufacturer Identity2 parameters
Manufacturer Identity
ParameterSymbolValue
BrandKOYO
Official Class Key090-010-010
Classification2 parameters
Classification
ParameterSymbolValue
Official Category PathNeedle roller bearings - Radial needle roller and cage assemblies - Metric series - K,K.ZW
Official Classification 1Needle roller bearings / Radial needle roller and cage assemblies / Metric series / K,K.ZW
Technical Data14 parameters
Technical Data
ParameterSymbolValue
Fw55 mm
Ew63 mm
Bc25 mm
Basic Load Ratings : Cr49.8 kN
Basic Load Ratings : C0R96.5 kN
Fatigue Load Limit : Cu15.1 kN
Cage Material P/SS
Limiting Speeds(Grease Lub.)5000 min-1
Limiting Speeds(Oil Lub.)7800 min-1
Recommended Dimensions Shaft : S(Max.)55.000 mm
Recommended Dimensions Shaft : S(Min.)54.987 mm
Recommended Dimensions Housing : H(Max.)63.029 mm
Recommended Dimensions Housing : H(Min.)63.010 mm
Mass(Refer.)0.080 kg

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
KOYO K55X63X25
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