SIFT BEARING STORE CATALOG

51240NSKThrust

51240 is a NSK thrust bearing, bore 200 mm, O.D. 280 mm, height 62 mm, dynamic rating 315 kN. Dimensions, drawing, interchanges and price.

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Bore d200mm
Outside dia. D280mm
Overall width T62mm
Dynamic Cr315kN
Static C0r1110kN
Limiting speed710rpm
Weight13.4kg
Cr / C0r0.28
Mean dia. dm240mm

Original catalogue drawing - NSK E1103, page 318

51240 NSK Thrust bearing catalogue drawing

Scanned from the manufacturer catalogue page listing this part number. All part numbers printed on that table share the same drawing.

Scale cross-section

DdTOutside dia. D280 mmBore d200 mmOverall width T62 mm

Blue = inner / outer ring, yellow = rolling element. Drawn to scale from this part's own dimensions for selection reference only - not a manufacturing or assembly drawing.

Dimension table (mm / inch)

SymbolDimensionmminch
dBore diameter2007.874
DOutside diameter28011.0236
TOverall assembly width622.4409
rChamfer (min)20.0787

Notes

Thrust bearing ratings are axial values Ca / Coa; T is the overall height. Weights are given in kg. Load ratings are shown in both the original catalogue units and the converted value (1 N = 0.2248 lbf). Data is provided for selection reference only - confirm against the latest official catalogue before ordering.

Main dimensions

Bore d (mm)200
Outside dia. D (mm)280
Overall width T (mm)62

Load ratings & speeds

Basic dynamic axial rating Ca (lbs)70815
Basic static axial rating Coa (lbs)249538
Basic dynamic axial rating Ca (N)315000
Basic static axial rating C0a (N)1110000
Limiting speed - grease (rpm)710
Limiting speed - oil (rpm)1,100

Weight

Weight (kg)13.4

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)2

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 200 rpm
478,7501028,466
652,50039232,708
839,3751,02485,333
1031,5002,154179,536
1521,0008,323693,622

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 315,000 N. Hours = L10 x 106 / (60n). Life-modification factors for lubrication, contamination and temperature (aISO) are not included.

Source & traceability

BrandNSK
Source catalogueNSK CAT. No. E1103 (metric)
Catalogue pagep.318 (dimensions)

Load ratings in newtons, weights in kg, limiting speeds for grease and oil lubrication.

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
29240NSKThrust20028048121,000 lbs8.528
29340NSKThrust200340851570 kN28.5
29340ENSKThrust20034085355,000 lbs28.576
29440NSKThrust200400122515,000 lbs68.946
51140NSKThrust20025037173 kN-
52240NSKThrust200280None315 kN23.2

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