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FAG / Four-point contact bearing

FAG QJ1984-N2-MPA

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

Technical data available
Bore diameterd
420 mm
Outside diameterD
560 mm
WidthB
65 mm
Dynamic load ratingC
620 kN
Static load ratingC0
1390 kN
Limiting speednG
1880 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
SeriesQJ1984
Bore diameterd420 mm
Outside diameterD560 mm
WidthB65 mm
Basic dynamic load ratingC620 kN
Basic static load ratingC01390 kN
Fatigue load limitPu35 kN
Reference speednref810 r/min
Limiting speednG1880 r/min
Mass≈m47.5 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 clearanceCNGroup N (CN)
Main Dimensions & Performance Data9 parameters
Main Dimensions & Performance Data
ParameterSymbolValue
Bore diameterd420 mm16.535 in
Outside diameterD560 mm22.047 in
WidthB65 mm2.559 in
Basic dynamic load rating, radialCr620,000 N139,388.489 lbf
Basic static load rating, radialC0r1,390,000 N312,500 lbf
Fatigue load limit, radialCur35,000 N7,868.705 lbf
Limiting speednG1,880 1/min
Reference speednϑr810 1/min
Mass≈m47.5 kg104.719 lbs
Mounting dimensions3 parameters
Mounting dimensions
ParameterSymbolValue
Minimum diameter shaft shoulderda min434.6 mm17.11 in
Maximum diameter of housing shoulderDa max545.4 mm21.472 in
Maximum fillet radiusra max3 mm0.118 in
Dimensions9 parameters
Dimensions
ParameterSymbolValue
Minimum chamfer dimensionrmin4 mm0.157 in
Shoulder diameter outer ringD1512.2 mm20.165 in
Shoulder diameter inner ringd1470.35 mm18.518 in
Distance between the apexes of the pressure conesa343.1 mm13.508 in
Hight retaining slotan15 mm0.591 in
Width retaining slotbn12.5 mm0.492 in
Radius retaining slotrn2.5 mm0.098 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 Identity9 parameters
Manufacturer Identity
ParameterSymbolValue
Schaeffler Product Code366504
BrandFAG
Base TypeQJ1984
Old Designation["QJ1984N2MPA"]
SAP material number0192601210000
Base product230508AD41
Bearing X designationQJ1984-N2-MPA
Mounting Manager IDQJ1984-N2-MPA
Grease application IDQJ1984-N2-MPA
Product Identity2 parameters
Product Identity
ParameterSymbolValue
ConstructionFour point contact bearing QJ19..-N2-MPA, holding grooves, solid brass cage
Short DescriptionFour-point contact bearing
Technical Data22 parameters
Technical Data
ParameterSymbolValue
Bore Diameter (D)420 mm
Outside Diameter (D)560 mm
Width (B)65 mm
Basic Dynamic Load Rating, Radial (Cr)620,000 N
Basic Static Load Rating, Radial (C0R)1,390,000 N
Operating Temperature Min. (Tmin)-30 °C
Limiting Speed (Ng)1,880 1/min
Operating Temperature Max. (Tmax)200 °C
Reference Speed (Nϑr)810 1/min
Angle Retaining Slot (Angle Retain)45 °
Hight Retaining Slot (An)15 mm
Radius Retaining Slot (Rn)2.5 mm
Fatigue Load Limit, Radial (Cur)35,000 N
Minimum Diameter Shaft Shoulder (Da Min)434.6 mm
Shoulder Diameter Inner Ring (D1)470.35 mm
Maximum Diameter Of Housing Shoulder (Da Max)545.4 mm
Minimum Chamfer Dimension (Rmin)4 mm
Maximum Fillet Radius (Ra Max)3 mm
Shoulder Diameter Outer Ring (D1)512.2 mm
Contact Angle (Α)35 °
Distance Between The Apexes Of The Pressure Cones (A)343.1 mm
Width Retaining Slot (Bn)12.5 mm

Technical documents & data sheet

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Record identity
FAG QJ1984-N2-MPA
Document matching
Exact designation, assembly scope, revision and units must agree.

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