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		NJ2304
Bore diameter	d	20 mm
Outside diameter	D	52 mm
Width	B	21 mm
Basic dynamic load rating	C	49.5 kN
Basic static load rating	C0	39 kN
Fatigue load limit	Pu	6.3 kN
Reference speed	nref	9700 r/min
Limiting speed	nG	25500 r/min
Mass	≈m	0.23704 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	E	Increased Capacity Design
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	20 mm0.787 in
Outside diameter	D	52 mm2.047 in
Width	B	21 mm0.827 in
Basic dynamic load rating, radial	Cr	49,500 N11,128.597 lbf
Basic static load rating, radial	C0r	39,000 N8,767.986 lbf
Fatigue load limit, radial	Cur	6,300 N1,416.367 lbf
Limiting speed	nG	25,500 1/min
Reference speed	nϑr	9,700 1/min
Mass	≈m	237.04 g8.361 oz

Mounting dimensions5 parameters

Mounting dimensions
Parameter	Symbol	Value
Minimum diameter shaft shoulder	da min	24 mm0.945 in
Maximum diameter of shaft shoulder	da max	27 mm1.063 in
Maximum diameter of housing shoulder	Da max	45 mm1.772 in
Minimum shaft shoulder	dc min	33 mm1.299 in
Maximum recess radius	ra max	1 mm0.039 in

Dimensions7 parameters

Dimensions
Parameter	Symbol	Value
Minimum chamfer dimension	rmin	1.1 mm0.043 in
Minimum chamfer dimension	r1 min	0.6 mm0.024 in
Axial displacement	s	1.9 mm0.075 in
Raceway diameter outer ring	E	45.5 mm1.791 in
Raceway diameter inner ring	F	27.5 mm1.083 in
Minimum rib diameter outer ring	D1 min	42.35 mm1.667 in
Maximum rib diameter inner ring	d1	31.25 mm1.23 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 & suitability5 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

Manufacturer Identity10 parameters

Product Identity2 parameters

Product Identity
Parameter	Symbol	Value
Construction		Cylindrical roller bearing NJ..-E-XL-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		HJ2304-E

Technical Data22 parameters

Technical Data
Parameter	Symbol	Value
Bore Diameter (D)		20 mm
Outside Diamater (D)		52 mm
Total Width (B)		21 mm
Basic Dynamic Load Rating, Radial (Cr)		49,500 N
Basic Static Load Rating, Radial (C0R)		39,000 N
Raceway Diameter Inner Ring (F)		27.5 mm
Operating Temperature Min. (Tmin)		-30 °C
Minimum Diameter Shaft Shoulder (Da)		24 mm
Operating Temperature Max. (Tmax)		150 °C
Limiting Speed (Limiting Spe)		25,500 1/min
Minimum Shaft Shoulder (Dc Min)		33 mm
Reference Speed (Nϑr)		9,700 1/min
Maximum Recess Radius (Ra Max)		1 mm
Maximum Diameter Of Housing Shoulder (Da)		45 mm
Maximum Rib Diameter Inner Ring (D1)		31.25 mm
Minimum Chamfer Dimension (R1 Min)		0.6 mm
Axial Displacement (S)		1.9 mm
Minimum Rib Diameter Outer Ring (D1 Min)		42.35 mm
Maximum Diameter Of Shaft Shoulder (Da Max)		27 mm
Minimum Chamfer Dimension (Rmin)		1.1 mm
Raceway Diameter Outer Ring (E)		45.5 mm
Fatigue Load Limit, Radial (Cur)		6,300 N

FAG NJ2304-E-XL-M1