23938-S-MB is a FAG spherical roller bearing, bore 190 mm, O.D. 260 mm, width 52 mm, dynamic rating 470 kN. Dimensions, drawing, interchanges and price.
Original catalogue drawing - FAG Schaeffler HR 1, page 720
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
190
7.4803
D
Outside diameter
260
10.2362
B
Inner-ring / bearing width
52
2.0472
r
Chamfer (min)
2
0.0787
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)
190
Outside dia. D (mm)
260
Width B (mm)
52
Inner-ring shoulder dia. D1 (mm)
240.2
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
105660
Basic static load rating Cor (lbs)
200080
Basic dynamic load rating Cr (N)
470000
Basic static load rating C0r (N)
890000
Fatigue limit load Cur (N)
62000
Factor e
0.18
Factor Y0
3.58
Limiting speed nG (rpm)
3,150
Reference speed nB (rpm)
1,750
Weight
Weight (kg)
8.4
Mounting dimensions (fillets / shoulders)
Housing fillet r max (mm)
2
Shaft shoulder da (mm)
198.8
Housing shoulder Da (mm)
251.2
Housing fillet ra max (mm)
2
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 1,000 rpm
4
117,500
102
1,693
6
78,333
392
6,542
8
58,750
1,024
17,067
10
47,000
2,154
35,907
15
31,333
8,323
138,724
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 470,000 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.720 (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.
