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		K6386
Bore diameter	d	66.675 mm
Basic dynamic load rating	C	355 kN
Basic static load rating	C0	385 kN
Fatigue load limit	Pu	65 kN
Reference speed	nref	4600 r/min
Limiting speed	nG	6300 r/min
Mass	≈m	2.3 kg
Precision class		ABMA4 — Class 4 (ANSI/ABMA 19.2:2013)
Cage		Standard — Sheet steel cage, window cage, roller-guided
Minimum operating temperature	Tmin	-30 °C
Maximum operating temperature	Tmax	120 °C

Product characteristics5 parameters

Product characteristics
Parameter	Symbol	Value
Tolerance class	ABMA4	Class 4 (ANSI/ABMA 19.2:2013)
Heat treatment	W60B	Carbonitrided
Cage	Standard	Sheet steel cage, window cage, roller-guided
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	66.675 mm2.625 in
Width, inner ring	B	56.007 mm2.205 in
Basic dynamic load rating, radial	Cr	355,000 N79,811.151 lbf
Basic static load rating, radial	C0r	385,000 N86,555.755 lbf
Fatigue load limit, radial	Cur	65,000 N14,613.309 lbf
Limiting speed	nG	6,300 1/min
Thermal speed rating	nϑr	4,600 1/min
Mass	≈m	2.3 kg5.071 lbs

Mounting dimensions5 parameters

Mounting dimensions
Parameter	Symbol	Value
Maximum diameter of shaft shoulder	da max	77 mm3.031 in
Minimum diameter of shaft shoulder	db min	87 mm3.425 in
Minimum axial space	CRa min	4 mm0.157 in
Maximum axial space	CRb max	0.5 mm0.02 in
Maximum fillet radius of shaft	ra max	4.3 mm0.169 in

Dimensions5 parameters

Dimensions
Parameter	Symbol	Value
Minimum chamfer dimension of inner ring back face	r1, 2 min	4.3 mm0.169 in
Distance between the apexes of the pressure cones	a	37 mm1.457 in
Guidance rib diameter of inner ring	d1	98.4 mm3.874 in
Outer envelope circle	Ew	129.024 mm5.08 in
Contact angle	α	12.208 °

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	0.32
Dynamic axial load factor	Y	1.85
Static axial load factor	Y0	1.02

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) K-Series, in inch sizes
Short Description		Tapered roller bearing

Technical Data21 parameters

Technical Data
Parameter	Symbol	Value
Bore Diameter (D)		66.675 mm
Basic Dynamic Load Rating, Radial (Cr)		355,000 N
Basic Static Load Rating, Radial (C0R)		385,000 N
Operating Temperature Min. (Tmin)		-30 °C
Limiting Speed (Ng)		6,300 1/min
Operating Temperature Max. (Tmax)		120 °C
Reference Speed (Nϑr)		4,600 1/min
Contact Angle (Α)		12.208 °
Fatigue Load Limit, Radial (Cur)		65,000 N
Limiting Value Of Fa/Fr For The Applicability Of Diff. Values Of Factors X And Y (E)		0.32
Maximum Diameter Of Shaft Shoulder (Da Max)		77 mm
Minimum Diameter Of Shaft Shoulder (Db Min)		87 mm
Dynamic Axial Load Factor (Y)		1.85
Maximum Fillet Radius (Ra Max)		4.3 mm
Maximum Axial Space (Crb Max)		0.5 mm
Minimum Chamfer Dimension Of Inner Ring Back Face (R1, 2 M)		4.3 mm
Guidance Rib Diameter Of Inner Ring (D1)		98.4 mm
Minimum Axial Space (Cra Min)		4 mm
Width, Inner Ring (B)		56.007 mm
Static Axial Load Factor (Y0)		1.02
Distance Between The Apexes Of The Pressure Cones (A)		37 mm

FAG K6386-XL-W60B