What are the classification of industrial robot bearings?

With the development of science and technology, robot becomes the future development trend.Precision bearings are especially important for the joint and rotating parts of industrial robots. What are the classifications of industrial robot bearings?The details are as follows:

1.Thin section ball bearing
It is a thin wall bearing family consisting of seven open series and five sealed series.There are three types of open series: radial contact, angular contact and point contact.The advantages of thin wall and other cross section bearings: thin wall type bearing realizes the very thin section of the bearing, and also realizes the miniatation and lightweight of the product.Product diversity extends its use.

Thin section bearing product features: in order to get low friction torque, high rigidity, good rotary precision, small diameter steel ball is used.The use of the hollow shaft ensures the space of light quantization and wiring.Thin wall type 6700, 6800 series have various dustproof cover form, flanged form, stainless steel form, wide form, etc., variety is complete.

Main applications of thin wall bearings: stepping motor, medical device, office instrument, testing instrument, deceleration. Variable speed device, robot, optics. Image instrument, rotary encoder.

Thin section bearings are also called thin-wall ring bearings, which have high precision, very quiet and strong carrying capacity.Thin-walled ring bearing can be deep groove ball bearing, four-point contact bearing, angular contact ball bearing, thin wall bearing are mostly square.In these series, even the larger shaft diameter and bearing hole, the cross section remains unchanged.These bearings are therefore called isosections.It is this feature that distinguishes the thin-walled ring bearings from the standard ISO series from the traditional bearings.Therefore, you can choose a larger cross section and use a bearing with stronger bearing capacity without changing the shaft diameter.Thin-walled ring bearings can be designed to be extremely light and require little space.

2.Cross roller bearings
Cross roller bearing features: cross roller bearing, cylindrical roller or tapered roller on the show 90 degrees of V groove rolling through the isolation piece is arranged vertically, each other so cross roller bearings can withstand radial load, axial load and torque load in the direction of the load.The size of inner and outer rings is miniaturized, and the extremely thin form is close to the small size of the limit, and has high steel, and the precision can reach the P5, P4 and P2.Therefore, it is suitable for the joint and rotating parts of industrial robot, rotary table of machining center, precision rotary table, medical machine, calculator, military industry, IC manufacturing equipment and so on.

1) Excellent rotation accuracy:
The internal structure of crossed roller bearings by roller are arranged 90 ° vertically cross each other, with intervals between roller device or isolation, can prevent roller friction between roller tilt goods, effectively prevent the rotation torque increases.In addition, there is no contact phenomenon or locking phenomenon of the roller;Meanwhile, because the inner and outer ring is a segmented structure, the gap can be adjusted, and even if the prepressure is applied, it can obtain high precision rotary motion.

2) Simplified operation and installation:
The outer ring or inner ring, which is divided into two parts, is fastened together after loading the roller and the maintainer, so the operation is very simple.

3) Bearing large axial and radial load:
Because of the roller in the 90 ° V groove rolling surface by interval retainer is perpendicular arrangement, this design makes cross roller bearings can bear larger radial load, axial load and torque load, etc. All the direction of the load.

4) Significantly save installation space:
Cross roller bearing inner and outer ring size is minimal miniaturization, especially ultra-thin structure is close to the limit of small size, and high rigidity, so the most suitable for the joints of the industrial robot parts or rotating parts, machinery processing center of the rotary worktable, mechanical rotary department, precision rotary worktable, medical instruments, measuring instruments, such as IC manufacturing equipment widely used.

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