Product specifications

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

Core specifications14 parameters

Core specifications
Parameter	Symbol	Value
Series		QJ1068
Bore diameter	d	340 mm
Outside diameter	D	520 mm
Width	B	82 mm
Basic dynamic load rating	C	760 kN
Basic static load rating	C0	1640 kN
Fatigue load limit	Pu	44 kN
Reference speed	nref	960 r/min
Limiting speed	nG	2070 r/min
Mass	≈m	67.5 kg
Precision class		PN — Normal (ISO 492:2023)
Cage		MPA — Solid brass cage, outer ring guided
Minimum operating temperature	Tmin	-30 °C
Maximum operating temperature	Tmax	200 °C

Product characteristics5 parameters

Product characteristics
Parameter	Symbol	Value
Design, bearing outer ring	N2	Two retaining grooves in the outer ring on one side
Tolerance class	PN	Normal (ISO 492:2023)
Cage	MPA	Solid brass cage, outer ring guided
Dimensional / heat stabilization	S1	Rings dimensional stabilized up to 200°
Axial internal clearance	CN	Group N (CN)

Main Dimensions & Performance Data9 parameters

Main Dimensions & Performance Data
Parameter	Symbol	Value
Bore diameter	d	340 mm13.386 in
Outside diameter	D	520 mm20.472 in
Width	B	82 mm3.228 in
Basic dynamic load rating, radial	Cr	760,000 N170,863.309 lbf
Basic static load rating, radial	C0r	1,640,000 N368,705.036 lbf
Fatigue load limit, radial	Cur	44,000 N9,892.086 lbf
Limiting speed	nG	2,070 1/min
Reference speed	nϑr	960 1/min
Mass	≈m	67.5 kg148.812 lbs

Mounting dimensions3 parameters

Mounting dimensions
Parameter	Symbol	Value
Minimum diameter shaft shoulder	da min	358 mm14.094 in
Maximum diameter of housing shoulder	Da max	502 mm19.764 in
Maximum fillet radius	ra max	4 mm0.157 in

Dimensions9 parameters

Dimensions
Parameter	Symbol	Value
Minimum chamfer dimension	rmin	5 mm0.197 in
Shoulder diameter outer ring	D1	459 mm18.071 in
Shoulder diameter inner ring	d1	403.75 mm15.896 in
Distance between the apexes of the pressure cones	a	301.1 mm11.854 in
Hight retaining slot	an	15 mm0.591 in
Width retaining slot	bn	12.5 mm0.492 in
Radius retaining slot	rn	2.5 mm0.098 in
Angle retaining slot		45 °
Contact angle	α	35 °

Temperature range2 parameters

Temperature range
Parameter	Symbol	Value
Operating temperature min.	Tmin	-30 °C-22 °F
Operating temperature max.	Tmax	200 °C392 °F

Capabilities & suitability7 parameters

Capabilities & suitability
Parameter	Symbol	Value
Radial load capacity		Yes
Axial load capacity in one direction		Yes
Axial load capacity in both directions		Yes
Suitable for grease lubrication		Yes
Suitable for oil lubrication		Yes
Unsealed design		Yes
Largebearing		Yes

Manufacturer Identity9 parameters

Product Identity2 parameters

Product Identity
Parameter	Symbol	Value
Construction		Four point contact bearing QJ10..-N2-MPA, holding grooves, solid brass cage
Short Description		Four-point contact bearing

Technical Data22 parameters

Technical Data
Parameter	Symbol	Value
Bore Diameter (D)		340 mm
Outside Diameter (D)		520 mm
Width (B)		82 mm
Basic Dynamic Load Rating, Radial (Cr)		760,000 N
Basic Static Load Rating, Radial (C0R)		1,640,000 N
Operating Temperature Min. (Tmin)		-30 °C
Limiting Speed (Ng)		2,070 1/min
Operating Temperature Max. (Tmax)		200 °C
Reference Speed (Nϑr)		960 1/min
Angle Retaining Slot (Angle Retain)		45 °
Hight Retaining Slot (An)		15 mm
Radius Retaining Slot (Rn)		2.5 mm
Fatigue Load Limit, Radial (Cur)		44,000 N
Minimum Diameter Shaft Shoulder (Da Min)		358 mm
Shoulder Diameter Inner Ring (D1)		403.75 mm
Maximum Diameter Of Housing Shoulder (Da Max)		502 mm
Minimum Chamfer Dimension (Rmin)		5 mm
Maximum Fillet Radius (Ra Max)		4 mm
Shoulder Diameter Outer Ring (D1)		459 mm
Contact Angle (Α)		35 °
Distance Between The Apexes Of The Pressure Cones (A)		301.1 mm
Width Retaining Slot (Bn)		12.5 mm

FAG QJ1068-N2-MPA