B71938-C-T-P4SFAGPrecision / Angular Contact

Name: FAG B71938-C-T-P4S Precision / Angular Contact Bearing
Brand: FAG
SKU: B71938-C-T-P4S

B71938-C-T-P4S is a FAG precision / angular contact bearing, bore 190 mm, O.D. 260 mm, width 33 mm. Dimensions, drawing, interchanges and price.

High precision class

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Bore d190mm

Outside dia. D260mm

Width B33mm

Dynamic Cr166kN

Static C0r212kN

Limiting speed4,300rpm

Weight4.31kg

Cr / C0r0.78

Mean dia. dm225mm

Original catalogue drawing - FAG Schaeffler HR 1, page 290

B71938-C-T-P4S FAG Precision / Angular Contact 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

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	33	1.2992
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)	33

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	37318
Basic static load rating Cor (lbs)	47659
Basic dynamic load rating Cr (N)	166000
Basic static load rating C0r (N)	212000
Fatigue limit load Cur (N)	10400
Limiting speed nG (rpm)	4,300
Effective load centre a (mm)	47

Weight

Weight (kg)	4.31

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)	2
Chamfer r1 min (mm)	1
Shaft shoulder da (mm)	202
Housing shoulder Da (mm)	247
Housing fillet ra max (mm)	1
Housing fillet ra1 max (mm)	1

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 1,400 rpm
4	41,500	64	762
6	27,667	216	2,571
8	20,750	512	6,095
10	16,600	1,000	11,905
15	11,067	3,375	40,179

Basic rating life per ISO 281: L₁₀ = (C/P)³ with C = 166,000 N. Hours = L₁₀ x 10⁶ / (60n). Life-modification factors for lubrication, contamination and temperature (a_ISO) are not included.

Source & traceability

Brand	FAG
Source catalogue	FAG / Schaeffler Rolling Bearings HR 1
Catalogue page	p.290 (dimensions)

Load ratings in newtons, fatigue limit load Cur, limiting speed nG and reference speed nB.

Interchange - same dimensions, other brands

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
6938	NSK	Ball	190	260	33	25,300 lbs	5.13
7938A5	NSK	Precision / Angular Contact	190	260	33	31,100 lbs	5.121
7938C	NSK	Precision / Angular Contact	190	260	33	33,100 lbs	5.062

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
61938	FAG	Ball	190	260	33	140 kN	4.39
B71938-E-T-P4S	FAG	Precision / Angular Contact	190	260	33	156 kN	4.29

Series variants (different suffix)

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
B71938-E-T-P4S	FAG	Precision / Angular Contact	190	260	33	156 kN	4.29

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
B7038-C-T-P4S	FAG	Precision / Angular Contact	190	290	46	250 kN	9.18
B7038-E-T-P4S	FAG	Precision / Angular Contact	190	290	46	236 kN	9.15
B7238-C-T-P4S	FAG	Precision / Angular Contact	190	340	55	315 kN	20
B7238-E-T-P4S	FAG	Precision / Angular Contact	190	340	55	300 kN	19.9

Request a quotation for B71938-C-T-P4S

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