6904ZZ

Thin-walled bearings.

Product features: In order to obtain low friction torque, high rigidity and good slewing accuracy of the bearing, small outer diameter steel balls are used. The use of hollow shaft ensures light weight and space for wiring. The thin-walled bearing achieves an extremely thin bearing section, and also miniaturizes and lightens the product. The variety of products extends the range of applications.

The thin-walled 6700 and 6800 series are available in a variety of dust cover forms, forms with flanges, stainless steel forms, and wide forms.

Classification.

Generally there are Rubber seal-RS, Iron seal-ZZ, Flat,Iron card-K, Copper card-M.

Thin-walled crossed roller bearings

CRA series thin-walled crossed roller bearings (outer ring split type) are small and light crossed roller bearings with thin wall thickness of outer ring and inner ring, which are both small and can bear heavy loads, so the mounting parts of the bearings on the equipment can be light...

CRB series thin-walled crossed roller bearings (outer ring split type) have a maximum miniaturization of the inner and outer ring size, the structure of which is two split outer rings and one inner ring.

CRE series thin-walled crossed roller bearings (inner ring split type) have a structure in which the inner ring is two split parts and the outer ring is one piece, and are most suitable for applications requiring high rotational accuracy of the outer ring.

Thin-walled ring bearings are highly accurate, very quiet and have a high load carrying capacity. These ball bearings are available in three designs and are extremely small and mostly square in cross-section. In these series, the cross section remains the same even for larger shaft diameters and bearing bores. These bearings are therefore called equal-section. It is this characteristic that separates the standard ISO series of

thin-walled sleeve bearings from conventional bearings. As a result, larger cross-sections can be selected and bearings with higher load carrying capacity can be used without changing the shaft diameter. Thin-walled collar bearings can be designed to be extremely light and require very little space.

Deep groove ball bearings, four point contact bearings, angular contact ball bearings

Thin-walled rings can be deep groove ball bearings (C), four-point contact bearings (X), angular contact ball bearings (E). These designs are available in different series. The series depends on the size of the cross section. The balls are matched to the series. Deep groove ball bearings can support axial loads as well as radial loads in both directions. Four-point contact bearings can support bi-directional

axial loads as well as radial loads; they therefore operate in the same way as double row angular contact ball bearings. Angular contact ball bearings can be matched with an optimum number of balls and have a contact angle of 30°. They support higher radial loads than deep groove ball bearings or four-point contact bearings and can support axial loads from the same direction. For special requirements

Angular contact ball bearings can also be supplied as matched bearings. As a result, the rigidity and load carrying capacity of these combinations are much higher than those of single bearing products.