Product specifications

Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.

Core specifications15 parameters

Core specifications
Parameter	Symbol	Value
Series		NJ248
Bore diameter	d	240 mm
Outside diameter	D	440 mm
Width	B	72 mm
Basic dynamic load rating	C	1140 kN
Basic static load rating	C0	1610 kN
Fatigue load limit	Pu	171 kN
Reference speed	nref	1220 r/min
Limiting speed	nG	2320 r/min
Mass	≈m	51.5 kg
Precision class		PN — Normal (ISO 492:2023)
Internal clearance		C3 (Group 3) — Internal clearance larger than CN
Cage		M1 — Two Piece Brass Cage Roller Guided
Minimum operating temperature	Tmin	-30 °C
Maximum operating temperature	Tmax	150 °C

Product characteristics5 parameters

Product characteristics
Parameter	Symbol	Value
Design	TB	Bearings with increased axial load capacity
Cage	M1	Two Piece Brass Cage Roller Guided
Radial internal clearance	C3 (Group 3)	Internal clearance larger than CN
Tolerance class	PN	Normal (ISO 492:2023)
Number of rows	1	Single-row design

Main Dimensions & Performance Data9 parameters

Main Dimensions & Performance Data
Parameter	Symbol	Value
Bore diameter	d	240 mm9.449 in
Outside diameter	D	440 mm17.323 in
Width	B	72 mm2.835 in
Basic dynamic load rating, radial	Cr	1,140,000 N256,294.964 lbf
Basic static load rating, radial	C0r	1,610,000 N361,960.432 lbf
Fatigue load limit, radial	Cur	171,000 N38,444.245 lbf
Limiting speed	nG	2,320 1/min
Reference speed	nϑr	1,220 1/min
Mass	≈m	51.5 kg113.538 lbs

Mounting dimensions5 parameters

Mounting dimensions
Parameter	Symbol	Value
Minimum diameter shaft shoulder	da min	257 mm10.118 in
Maximum diameter of shaft shoulder	da max	290 mm11.417 in
Maximum diameter of housing shoulder	Da max	423 mm16.654 in
Minimum shaft shoulder	dc min	315 mm12.402 in
Maximum recess radius	ra max	3 mm0.118 in

Dimensions7 parameters

Dimensions
Parameter	Symbol	Value
Minimum chamfer dimension	rmin	4 mm0.157 in
Minimum chamfer dimension	r1 min	4 mm0.157 in
Axial displacement	s	6 mm0.236 in
Raceway diameter outer ring	E	393 mm15.472 in
Raceway diameter inner ring	F	293 mm11.535 in
Minimum rib diameter outer ring	D1 min	373 mm14.685 in
Maximum rib diameter inner ring	d1	313 mm12.323 in

Temperature range2 parameters

Temperature range
Parameter	Symbol	Value
Operating temperature min.	Tmin	-30 °C-22 °F
Operating temperature max.	Tmax	150 °C302 °F

Capabilities & suitability6 parameters

Capabilities & suitability
Parameter	Symbol	Value
Radial load capacity		Yes
Axial load capacity in one direction		Yes
Suitable for grease lubrication		Yes
Suitable for oil lubrication		Yes
Unsealed design		Yes
Largebearing		Yes

Manufacturer Identity8 parameters

Product Identity2 parameters

Product Identity
Parameter	Symbol	Value
Construction		Cylindrical roller bearing NJ..-E-M1, with cage, single row, semi-locating bearing, 2 ribs on outer ring, 1 rib on inner ring, type NJ
Short Description		Cylindrical roller bearing

Additional information1 parameter

Additional information
Parameter	Symbol	Value
L-washer		HJ248-E

Technical Data22 parameters

Technical Data
Parameter	Symbol	Value
Bore Diameter (D)		240 mm
Outside Diamater (D)		440 mm
Total Width (B)		72 mm
Basic Dynamic Load Rating, Radial (Cr)		1,140,000 N
Basic Static Load Rating, Radial (C0R)		1,610,000 N
Raceway Diameter Inner Ring (F)		293 mm
Operating Temperature Min. (Tmin)		-30 °C
Minimum Diameter Shaft Shoulder (Da)		257 mm
Operating Temperature Max. (Tmax)		150 °C
Limiting Speed (Limiting Spe)		2,320 1/min
Minimum Shaft Shoulder (Dc Min)		315 mm
Reference Speed (Nϑr)		1,220 1/min
Maximum Recess Radius (Ra Max)		3 mm
Maximum Diameter Of Housing Shoulder (Da)		423 mm
Maximum Rib Diameter Inner Ring (D1)		313 mm
Minimum Chamfer Dimension (R1 Min)		4 mm
Axial Displacement (S)		6 mm
Minimum Rib Diameter Outer Ring (D1 Min)		373 mm
Maximum Diameter Of Shaft Shoulder (Da Max)		290 mm
Minimum Chamfer Dimension (Rmin)		4 mm
Raceway Diameter Outer Ring (E)		393 mm
Fatigue Load Limit, Radial (Cur)		171,000 N

FAG NJ248-E-TB-M1-C3