Product specifications

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

Core specifications12 parameters

Core specifications
Parameter	Symbol	Value
Series		R30210
Bore diameter	d	50 mm
Basic dynamic load rating	C	98 kN
Basic static load rating	C0	97 kN
Fatigue load limit	Pu	15.1 kN
Reference speed	nref	4700 r/min
Limiting speed	nG	9900 r/min
Mass	≈m	0.394 kg
Precision class		PN — Normal (ISO 492:2023)
Cage		Standard — Sheet steel cage, window cage, roller-guided
Minimum operating temperature	Tmin	-30 °C
Maximum operating temperature	Tmax	120 °C

Product characteristics6 parameters

Product characteristics
Parameter	Symbol	Value
Tolerance class	PN	Normal (ISO 492:2023)
Heat treatment		Standard
Cage	Standard	Sheet steel cage, window cage, roller-guided
Internal design		Standard
Quality level	XL	X-life
Number of rows	1	Single-row design

Main Dimensions & Performance Data8 parameters

Main Dimensions & Performance Data
Parameter	Symbol	Value
Bore diameter	d	50 mm1.969 in
Width, inner ring	B	20 mm0.787 in
Basic dynamic load rating, radial	Cr	98,000 N22,032.374 lbf
Basic static load rating, radial	C0r	97,000 N21,807.554 lbf
Fatigue load limit, radial	Cur	15,100 N3,394.784 lbf
Limiting speed	nG	9,900 1/min
Thermal speed rating	nϑr	4,700 1/min
Mass	≈m	0.394 kg0.869 lbs

Mounting dimensions5 parameters

Mounting dimensions
Parameter	Symbol	Value
Maximum diameter of shaft shoulder	da max	58 mm2.283 in
Minimum diameter of shaft shoulder	db min	57 mm2.244 in
Minimum axial space	CRa min	4.8 mm0.189 in
Maximum axial space	CRb max	0.2 mm0.008 in
Maximum fillet radius of shaft	ra max	1.5 mm0.059 in

Dimensions5 parameters

Dimensions
Parameter	Symbol	Value
Minimum chamfer dimension of inner ring back face	r1, 2 min	1.5 mm0.059 in
Distance between the apexes of the pressure cones	a	18 mm0.709 in
Guidance rib diameter of inner ring	d1	69.6 mm2.74 in
Outer envelope circle	Ew	87.258 mm3.435 in
Contact angle	α	15.642 °

Temperature range2 parameters

Temperature range
Parameter	Symbol	Value
Operating temperature min.	Tmin	-30 °C-22 °F
Operating temperature max.	Tmax	120 °C248 °F

Calculation factors3 parameters

Calculation factors
Parameter	Symbol	Value
Limiting value of Fa/Fr for the applicability of diff. Values of factors X and Y	e	0.42
Dynamic axial load factor	Y	1.43
Static axial load factor	Y0	0.79

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 Identity6 parameters

Product Identity2 parameters

Product Identity
Parameter	Symbol	Value
Construction		Tapered roller bearings without outer ring (Cone) 302, main dimensions acc. to DIN 720
Short Description		Tapered roller bearing

Additional information1 parameter

Additional information
Parameter	Symbol	Value
Comparative designation to ISO 10317 and ISO 355		T3DB050

Technical Data21 parameters

Technical Data
Parameter	Symbol	Value
Bore Diameter (D)		50 mm
Basic Dynamic Load Rating, Radial (Cr)		98,000 N
Basic Static Load Rating, Radial (C0R)		97,000 N
Operating Temperature Min. (Tmin)		-30 °C
Limiting Speed (Ng)		9,900 1/min
Operating Temperature Max. (Tmax)		120 °C
Reference Speed (Nϑr)		4,700 1/min
Contact Angle (Α)		15.642 °
Fatigue Load Limit, Radial (Cur)		15,100 N
Limiting Value Of Fa/Fr For The Applicability Of Diff. Values Of Factors X And Y (E)		0.42
Maximum Diameter Of Shaft Shoulder (Da Max)		58 mm
Minimum Diameter Of Shaft Shoulder (Db Min)		57 mm
Dynamic Axial Load Factor (Y)		1.43
Maximum Fillet Radius (Ra Max)		1.5 mm
Maximum Axial Space (Crb Max)		0.2 mm
Minimum Chamfer Dimension Of Inner Ring Back Face (R1, 2 M)		1.5 mm
Guidance Rib Diameter Of Inner Ring (D1)		69.6 mm
Minimum Axial Space (Cra Min)		4.8 mm
Width, Inner Ring (B)		20 mm
Static Axial Load Factor (Y0)		0.79
Distance Between The Apexes Of The Pressure Cones (A)		18 mm

FAG R30210-XL