The classification of non-standard three or four point angular contact ball bearings

QIBR are able to provide sealed three or four point angular contact ball bearings, three or four point angular contact ball bearings with snap grooves on the outer ring, etc. QIBR can make new design for customized bearings according to customer need, such as the bearings with irregular contact angle. As shown below.

Three or four point angular contact ball bearings are classified into general dust cap seals, non-contact rubber seals and contact rubber seals. Usually, the sealed bearings are filled with grease lubricant. The amount of grease is 25% to 40% of the effective space of the bearing. If there are special requirements, we can make corresponding adjustments.

Sealed four point angular contact ball bearing

Outer ring with snap groove four point angular contact ball bearing

Bearing cage

The high-quality cage used by QIBR bearings ensure that the balls are evenly distributed in the bearing rings and can be rotated properly.

The cage has stamped steel wave type, stamped steel rivet type, nylon or phenolic plastic.

QIBR offers a wide range of advice and options depending on the operating conditions.

Type of lubrication

Lubricating oil is the basic lubricant for ball bearings. Previously most of the lubricating oil was extracted from petroleum. Synthetic oils are now acceptable due to improved performance, such as two lipid synthetic oils, silicones and fluorocarbon synthetic oils. In general, lipid synthetic oils have better low temperature properties, lower volatility, and better temperature characteristics and viscosity compared than petroleum refined oils. Essentially all lubricants contain additives to inhibit chemical changes, prevent metal corrosion, and improve physical properties (antifoam, etc.).

The silicone and fluorocarbon synthetic oils that adopted by QIBR have lower volatility and wider temperature/viscosity characteristics.

Service life and the rated load

The bearing life is the number of bearing rotations before the fatigue occurs on the ring or any rolling element (or the rotation time at a constant speed). However, the same set of bearings will not necessarily have the same life under the same conditions. In this case, the rated life is the number of rotations that 90% of the bearings in this group can reach or exceed before bearing weariness (or the rotation time at a constant speed). The service life of QIBR series bearings are 10%-20% longer than other bearings of the same model, through strict production process, high standard material selection, precision control.