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		NJ252
Bore diameter	d	260 mm
Outside diameter	D	480 mm
Width	B	80 mm
Basic dynamic load rating	C	1350 kN
Basic static load rating	C0	1890 kN
Fatigue load limit	Pu	195 kN
Reference speed	nref	1110 r/min
Limiting speed	nG	2100 r/min
Mass	≈m	68.2 kg
Precision class		PN — Normal (ISO 492:2023)
Internal clearance		CN (Group N) — Normal internal clearance
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	CN (Group N)	Normal internal clearance
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	260 mm10.236 in
Outside diameter	D	480 mm18.898 in
Width	B	80 mm3.15 in
Basic dynamic load rating, radial	Cr	1,350,000 N303,507.194 lbf
Basic static load rating, radial	C0r	1,890,000 N424,910.072 lbf
Fatigue load limit, radial	Cur	195,000 N43,839.928 lbf
Limiting speed	nG	2,100 1/min
Reference speed	nϑr	1,110 1/min
Mass	≈m	68.2 kg150.355 lbs

Mounting dimensions5 parameters

Mounting dimensions
Parameter	Symbol	Value
Minimum diameter shaft shoulder	da min	280 mm11.024 in
Maximum diameter of shaft shoulder	da max	314 mm12.362 in
Maximum diameter of housing shoulder	Da max	460 mm18.11 in
Minimum shaft shoulder	dc min	341 mm13.425 in
Maximum recess radius	ra max	4 mm0.157 in

Dimensions7 parameters

Dimensions
Parameter	Symbol	Value
Minimum chamfer dimension	rmin	5 mm0.197 in
Minimum chamfer dimension	r1 min	5 mm0.197 in
Axial displacement	s	6.2 mm0.244 in
Raceway diameter outer ring	E	429 mm16.89 in
Raceway diameter inner ring	F	317 mm12.48 in
Minimum rib diameter outer ring	D1 min	406.6 mm16.008 in
Maximum rib diameter inner ring	d1	339.7 mm13.374 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		HJ252-E

Technical Data22 parameters

Technical Data
Parameter	Symbol	Value
Bore Diameter (D)		260 mm
Outside Diamater (D)		480 mm
Total Width (B)		80 mm
Basic Dynamic Load Rating, Radial (Cr)		1,350,000 N
Basic Static Load Rating, Radial (C0R)		1,890,000 N
Raceway Diameter Inner Ring (F)		317 mm
Operating Temperature Min. (Tmin)		-30 °C
Minimum Diameter Shaft Shoulder (Da)		280 mm
Operating Temperature Max. (Tmax)		150 °C
Limiting Speed (Limiting Spe)		2,100 1/min
Minimum Shaft Shoulder (Dc Min)		341 mm
Reference Speed (Nϑr)		1,110 1/min
Maximum Recess Radius (Ra Max)		4 mm
Maximum Diameter Of Housing Shoulder (Da)		460 mm
Maximum Rib Diameter Inner Ring (D1)		339.7 mm
Minimum Chamfer Dimension (R1 Min)		5 mm
Axial Displacement (S)		6.2 mm
Minimum Rib Diameter Outer Ring (D1 Min)		406.6 mm
Maximum Diameter Of Shaft Shoulder (Da Max)		314 mm
Minimum Chamfer Dimension (Rmin)		5 mm
Raceway Diameter Outer Ring (E)		429 mm
Fatigue Load Limit, Radial (Cur)		195,000 N

FAG NJ252-E-TB-M1