7011 CD/P4ATBTB

These sets of three matched super-precision angular contact ball bearings are available as universally matchable bearings or as preconfigured arrangements.

Sets arranged in back-to-back and tandem, or face-to-face and tandem, are available in different preload classes and correct mounting results in preload within a predetermined range, without the need for shims or similar devices. Sets of three bearings paired in tandem need to be mounted against a single bearing, or another set of bearings in tandem, to achieve the desired preload. The bore and outside diameters of the bearings are matched to within a maximum of one-third of the permitted diameter tolerance, to provide better load distribution than single universally matchable bearings.

• Very high running accuracy
• High axial and radial stiffness
• High axial and radial load carrying capacity

Dimensions

d	55 mm	Bore diameter
D	90 mm	Outside diameter
B	54 mm	Width
d1	65.8 mm	Shoulder diameter of inner ring (large side face)
r1,2	min.1.1 mm	Chamfer dimension
r3,4	min.0.6 mm	Chamfer dimension

Abutment dimensions

da	min.61 mm	Diameter of shaft abutment
Db	max.86.8 mm	Diameter of housing abutment
ra	max.1 mm	Radius of fillet
rb	max.0.6 mm	Radius of fillet
dn	68.1 mm	Position of oil nozzle