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FAG / Four-point contact bearing

FAG QJ1088-N2-MPA-C3

Four-point contact bearing technical reference with manufacturer-sourced dimensions, characteristics and engineering resources.

Technical data available
Bore diameterd
440 mm
Outside diameterD
650 mm
WidthB
94 mm
Dynamic load ratingC
970 kN
Static load ratingC0
2400 kN
Limiting speednG
1620 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 specifications14 parameters
Core specifications
ParameterSymbolValue
SeriesQJ1088
Bore diameterd440 mm
Outside diameterD650 mm
WidthB94 mm
Basic dynamic load ratingC970 kN
Basic static load ratingC02400 kN
Fatigue load limitPu57 kN
Reference speednref690 r/min
Limiting speednG1620 r/min
Mass≈m114 kg
Precision classPN — Normal (ISO 492:2023)
CageMPA — Solid brass cage, outer ring guided
Minimum operating temperatureTmin-30 °C
Maximum operating temperatureTmax200 °C
Product characteristics5 parameters
Product characteristics
ParameterSymbolValue
Design, bearing outer ringN2Two retaining grooves in the outer ring on one side
Tolerance classPNNormal (ISO 492:2023)
CageMPASolid brass cage, outer ring guided
Dimensional / heat stabilizationS1Rings dimensional stabilized up to 200°
Axial internal clearanceC3Group 3 (C3), bigger than CN
Main Dimensions & Performance Data9 parameters
Main Dimensions & Performance Data
ParameterSymbolValue
Bore diameterd440 mm17.323 in
Outside diameterD650 mm25.591 in
WidthB94 mm3.701 in
Basic dynamic load rating, radialCr970,000 N218,075.54 lbf
Basic static load rating, radialC0r2,400,000 N539,568.345 lbf
Fatigue load limit, radialCur57,000 N12,814.748 lbf
Limiting speednG1,620 1/min
Reference speednϑr690 1/min
Mass≈m114 kg251.327 lbs
Mounting dimensions3 parameters
Mounting dimensions
ParameterSymbolValue
Minimum diameter shaft shoulderda min463 mm18.228 in
Maximum diameter of housing shoulderDa max627 mm24.685 in
Maximum fillet radiusra max5 mm0.197 in
Dimensions9 parameters
Dimensions
ParameterSymbolValue
Minimum chamfer dimensionrmin6 mm0.236 in
Shoulder diameter outer ringD1579.1 mm22.799 in
Shoulder diameter inner ringd1514.05 mm20.238 in
Distance between the apexes of the pressure conesa381.6 mm15.024 in
Hight retaining slotan20 mm0.787 in
Width retaining slotbn15.5 mm0.61 in
Radius retaining slotrn3 mm0.118 in
Angle retaining slot45 °
Contact angleα35 °
Temperature range2 parameters
Temperature range
ParameterSymbolValue
Operating temperature min.Tmin-30 °C-22 °F
Operating temperature max.Tmax200 °C392 °F
Capabilities & suitability7 parameters
Capabilities & suitability
ParameterSymbolValue
Radial load capacityYes
Axial load capacity in one directionYes
Axial load capacity in both directionsYes
Suitable for grease lubricationYes
Suitable for oil lubricationYes
Unsealed designYes
LargebearingYes
Manufacturer Identity10 parameters
Manufacturer Identity
ParameterSymbolValue
Schaeffler Product Code366466
BrandFAG
Base TypeQJ1088
Old Designation["QJ1088N2MPA.C3"]
X Life Markingn.r.
SAP material number0389049770030
Base product230508AD41
Bearing X designationQJ1088-N2-MPA-C3
Mounting Manager IDQJ1088-N2-MPA-C3
Grease application IDQJ1088-N2-MPA-C3
Product Identity2 parameters
Product Identity
ParameterSymbolValue
ConstructionFour point contact bearing QJ10..-N2-MPA, holding grooves, solid brass cage
Short DescriptionFour-point contact bearing
Technical Data22 parameters
Technical Data
ParameterSymbolValue
Bore Diameter (D)440 mm
Outside Diameter (D)650 mm
Width (B)94 mm
Basic Dynamic Load Rating, Radial (Cr)970,000 N
Basic Static Load Rating, Radial (C0R)2,400,000 N
Operating Temperature Min. (Tmin)-30 °C
Limiting Speed (Ng)1,620 1/min
Operating Temperature Max. (Tmax)200 °C
Reference Speed (Nϑr)690 1/min
Angle Retaining Slot (Angle Retain)45 °
Hight Retaining Slot (An)20 mm
Radius Retaining Slot (Rn)3 mm
Fatigue Load Limit, Radial (Cur)57,000 N
Minimum Diameter Shaft Shoulder (Da Min)463 mm
Shoulder Diameter Inner Ring (D1)514.05 mm
Maximum Diameter Of Housing Shoulder (Da Max)627 mm
Minimum Chamfer Dimension (Rmin)6 mm
Maximum Fillet Radius (Ra Max)5 mm
Shoulder Diameter Outer Ring (D1)579.1 mm
Contact Angle (Α)35 °
Distance Between The Apexes Of The Pressure Cones (A)381.6 mm
Width Retaining Slot (Bn)15.5 mm

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
FAG QJ1088-N2-MPA-C3
Document matching
Exact designation, assembly scope, revision and units must agree.

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