Product specifications

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

Core specifications13 parameters

Core specifications
Parameter	Symbol	Value
Bore diameter	d	180 mm
Outside diameter	D	240 mm
Width	B	32 mm
Basic dynamic load rating	C	230 kN
Basic static load rating	C0	400 kN
Fatigue load limit	Pu	47.5 kN
Reference speed	nref	1710 r/min
Limiting speed	nG	2800 r/min
Mass	≈m	3.62 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	200 °C

Product characteristics5 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
Quality level		Standard
Number of rows	1	Single-row design

Main Dimensions & Performance Data11 parameters

Main Dimensions & Performance Data
Parameter	Symbol	Value
Bore diameter	d	180 mm7.087 in
Outside diameter	D	240 mm9.449 in
Width, inner ring	B	30 mm1.181 in
Width, outer ring	C	23 mm0.906 in
Width, total	T	32 mm1.26 in
Basic dynamic load rating, radial	Cr	230,000 N51,708.633 lbf
Basic static load rating, radial	C0r	400,000 N89,928.058 lbf
Fatigue load limit, radial	Cur	47,500 N10,678.957 lbf
Limiting speed	nG	2,800 1/min
Thermal speed rating	nϑr	1,710 1/min
Mass	≈m	3.62 kg7.981 lbs

Mounting dimensions9 parameters

Mounting dimensions
Parameter	Symbol	Value
Maximum diameter of shaft shoulder	da max	192 mm7.559 in
Minimum diameter of shaft shoulder	db min	195 mm7.677 in
Minimum diameter of housing shoulder	Da min	224 mm8.819 in
Maximum diameter of housing shoulder	Da max	228 mm8.976 in
Minimum diameter of housing shoulder	Db min	233 mm9.173 in
Minimum axial space	Ca min	5 mm0.197 in
Minimum axial space	Cb min	9 mm0.354 in
Maximum fillet radius of shaft	ra max	3 mm0.118 in
Maximum fillet radius of housing	rb max	3 mm0.118 in

Dimensions4 parameters

Dimensions
Parameter	Symbol	Value
Minimum chamfer dimension of inner ring back face	r1, 2 min	3 mm0.118 in
Minimum chamfer dimension of outer ring back face	r3, 4 min	3 mm0.118 in
Distance between the apexes of the pressure cones	a	48 mm1.89 in
Guidance rib diameter of inner ring	d1	209.4 mm8.244 in

Temperature range2 parameters

Temperature range
Parameter	Symbol	Value
Operating temperature min.	Tmin	-30 °C-22 °F
Operating temperature max.	Tmax	200 °C392 °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	0.48
Dynamic axial load factor	Y	1.24
Static axial load factor	Y0	0.68

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 Identity9 parameters

Product Identity2 parameters

Product Identity
Parameter	Symbol	Value
Construction		Tapered roller bearings T, main dimensions acc. to ISO 355, separable
Short Description		Tapered roller bearing

Additional information1 parameter

Additional information
Parameter	Symbol	Value
Comparative designation to ISO 10317 and ISO 355		T4DB180

Technical Data28 parameters

Technical Data
Parameter	Symbol	Value
Bore Diameter (D)		180 mm
Outside Diameter (D)		240 mm
Width (B)		32 mm
Basic Dynamic Load Rating, Radial (Cr)		230,000 N
Basic Static Load Rating, Radial (C0R)		400,000 N
Operating Temperature Min. (Tmin)		-30 °C
Limiting Speed (Ng)		2,800 1/min
Operating Temperature Max. (Tmax)		200 °C
Reference Speed (Nϑr)		1,710 1/min
Maximum Fillet Radius Of Housing (Rb Max)		3 mm
Minimum Chamfer Dimension Of Outer Ring Back Face (R3, 4 M)		3 mm
Minimum Diameter Of Housing Shoulder (Da Min)		224 mm
Minimum Diameter Of Housing Shoulder (Db Min)		233 mm
Width, Outer Ring (C)		23 mm
Fatigue Load Limit, Radial (Cur)		47,500 N
Limiting Value Of Fa/Fr For The Applicability Of Diff. Values Of Factors X And Y (E)		0.48
Maximum Diameter Of Shaft Shoulder (Da Max)		192 mm
Minimum Diameter Of Shaft Shoulder (Db Min)		195 mm
Maximum Diameter Of Housing Shoulder (Da Max)		228 mm
Dynamic Axial Load Factor (Y)		1.24
Maximum Fillet Radius (Ra Max)		3 mm
Minimum Axial Space (Cb Min)		9 mm
Minimum Chamfer Dimension Of Inner Ring Back Face (R1, 2 M)		3 mm
Guidance Rib Diameter Of Inner Ring (D1)		209.4 mm
Minimum Axial Space (Ca Min)		5 mm
Width, Inner Ring (B)		30 mm
Static Axial Load Factor (Y0)		0.68
Distance Between The Apexes Of The Pressure Cones (A)		48 mm

FAG T4DB180