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		NU321
Bore diameter	d	105 mm
Outside diameter	D	225 mm
Width	B	49 mm
Basic dynamic load rating	C	495 kN
Basic static load rating	C0	470 kN
Fatigue load limit	Pu	59 kN
Reference speed	nref	3200 r/min
Limiting speed	nG	5300 r/min
Mass	≈m	9.63 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	105 mm4.134 in
Outside diameter	D	225 mm8.858 in
Width	B	49 mm1.929 in
Basic dynamic load rating, radial	Cr	495,000 N111,285.971 lbf
Basic static load rating, radial	C0r	470,000 N105,665.468 lbf
Fatigue load limit, radial	Cur	59,000 N13,264.388 lbf
Limiting speed	nG	5,300 1/min
Reference speed	nϑr	3,200 1/min
Mass	≈m	9.63 kg21.23 lbs

Mounting dimensions6 parameters

Mounting dimensions
Parameter	Symbol	Value
Minimum diameter shaft shoulder	da min	119 mm4.685 in
Maximum diameter of shaft shoulder	da max	132 mm5.197 in
Minimum shaft shoulder	db min	137 mm5.394 in
Maximum diameter of housing shoulder	Da max	211 mm8.307 in
Maximum recess radius	ra max	2.5 mm0.098 in
Maximum recess radius	ra1 max	2.5 mm0.098 in

Dimensions6 parameters

Dimensions
Parameter	Symbol	Value
Minimum chamfer dimension	rmin	3 mm0.118 in
Minimum chamfer dimension	r1 min	3 mm0.118 in
Axial displacement	s	1.4 mm0.055 in
Raceway diameter outer ring	E	201 mm7.913 in
Raceway diameter inner ring	F	133 mm5.236 in
Minimum rib diameter outer ring	D1 min	189.7 mm7.469 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 & suitability4 parameters

Capabilities & suitability
Parameter	Symbol	Value
Radial load capacity		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 NU..-E-XL-M1, with cage, single row, non-locating bearing, 2 ribs on outer ring, 0 ribs on inner ring (smooth), type NU, Running accuracy in P6
Short Description		Cylindrical roller bearing

Technical Data22 parameters

Technical Data
Parameter	Symbol	Value
Bore Diameter (D)		105 mm
Outside Diamater (D)		225 mm
Total Width (B)		49 mm
Basic Dynamic Load Rating, Radial (Cr)		495,000 N
Basic Static Load Rating, Radial (C0R)		470,000 N
Raceway Diameter Inner Ring (F)		133 mm
Operating Temperature Min. (Tmin)		-30 °C
Minimum Diameter Shaft Shoulder (Da)		119 mm
Operating Temperature Max. (Tmax)		150 °C
Limiting Speed (Limiting Spe)		5,300 1/min
Reference Speed (Nϑr)		3,200 1/min
Maximum Recess Radius (Ra Max)		2.5 mm
Maximum Diameter Of Housing Shoulder (Da)		211 mm
Minimum Chamfer Dimension (R1 Min)		3 mm
Axial Displacement (S)		1.4 mm
Minimum Rib Diameter Outer Ring (D1 Min)		189.7 mm
Maximum Diameter Of Shaft Shoulder (Da Max)		132 mm
Maximum Recess Radius (Ra1 Max)		2.5 mm
Minimum Chamfer Dimension (Rmin)		3 mm
Raceway Diameter Outer Ring (E)		201 mm
Minimum Shaft Shoulder (Db Min)		137 mm
Fatigue Load Limit, Radial (Cur)		59,000 N

FAG NU321-E-XL-M1