99,016 bearing records · search, filter and compare

INA / Radial insert ball bearing

INA RA104-NPP-B

Radial insert ball bearing technical reference with manufacturer-sourced dimensions, characteristics and engineering resources.

Technical data available
Bore diameterd
31.75 mm
Outside diameterD
72 mm
WidthB
39 mm
Dynamic load ratingC
25.5 kN
Static load ratingC0
15.3 kN
Mass≈m
0.508 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 specifications8 parameters
Core specifications
ParameterSymbolValue
SeriesRA104
Bore diameterd31.75 mm
Outside diameterD72 mm
WidthB39 mm
Basic dynamic load ratingC25.5 kN
Basic static load ratingC015.3 kN
Fatigue load limitPu0.8 kN
Mass≈m0.508 kg
Manufacturer Identity5 parameters
Manufacturer Identity
ParameterSymbolValue
Schaeffler Product Code358953
BrandINA
Base TypeRA104
Old Designation["RA 104 NPPB"]
X Life Markingn.r.
Product Identity2 parameters
Product Identity
ParameterSymbolValue
ConstructionRadial insert ball bearings RA..-NPP-B, spherical outer ring, location by eccentric locking collar, P seals on both sides, inch size bore
Short DescriptionRadial insert ball bearing
Technical Data14 parameters
Technical Data
ParameterSymbolValue
Bore Diameter (D)31.75 mm
Outside Diameter (Dsp)72 mm
Locking Collar Total Width (B1)39 mm
Basic Dynamic Load Rating, Radial (Cr)25,500 N
Basic Static Load Rating, Radial (C0R)15,300 N
Width Across Flats (Inch) (W)0.188 in
Width, Outer Ring (C)19 mm
Calculation Factor (F0)13.8
Total Width (Total Width)25.4 mm
Outside Diameter Locking Collar/Locknut (D3)51 mm
Distance Raceway (S)9.5 mm
Rib Diameter Sealing Inner Ring (D2)44.6 mm
Bore Diameter, Inch (D)1.25 in
Fatigue Load Limit, Radial (Cur)800 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
INA RA104-NPP-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