23948-K-MB is a FAG spherical roller bearing, bore 240 mm, O.D. 320 mm, width 60 mm, dynamic rating 640 kN. Dimensions, drawing, interchanges and price.
Original catalogue drawing - FAG Schaeffler HR 1, page 764
Scanned from the manufacturer catalogue page listing this part number. All part numbers printed on that table share the same drawing.
Scale cross-section
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)
Symbol
Dimension
mm
inch
d
Bore diameter
240
9.4488
D
Outside diameter
320
12.5984
B
Inner-ring / bearing width
60
2.3622
r
Chamfer (min)
2.1
0.0827
Notes
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)
240
Outside dia. D (mm)
320
Width B (mm)
60
Inner-ring shoulder dia. D1 (mm)
297.8
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
143878
Basic static load rating Cor (lbs)
307988
Basic dynamic load rating Cr (N)
640000
Basic static load rating C0r (N)
1.37e+06
Fatigue limit load Cur (N)
93000
Factor e
0.17
Factor Y0
3.96
Limiting speed nG (rpm)
2,440
Reference speed nB (rpm)
1,310
Weight
Weight (kg)
13.4
Mounting dimensions (fillets / shoulders)
Housing fillet r max (mm)
2.1
Shaft shoulder da (mm)
250.2
Shaft shoulder db (mm)
250
Housing shoulder Da (mm)
309.8
Housing fillet ra max (mm)
2.1
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 800 rpm
4
160,000
102
2,117
6
106,667
392
8,177
8
80,000
1,024
21,333
10
64,000
2,154
44,884
15
42,667
8,323
173,406
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 640,000 N. Hours = L10 x 106 / (60n). Life-modification factors for lubrication, contamination and temperature (aISO) are not included.
Source & traceability
Brand
FAG
Source catalogue
FAG / Schaeffler Rolling Bearings HR 1
Catalogue page
p.764 (dimensions)
Load ratings in newtons, fatigue limit load Cur, limiting speed nG and reference speed nB.
Send us the quantity you need and we will come back with price and
lead time, normally within 24 hours. Equivalent parts from other brands can be quoted at the same time.
