QIBR full complement cylindrical roller bearing products are mostly separate bearings, which are very convenient to install and disassemble. The roller of the cylindrical roller bearing is in direct contact with the raceway, so the radial load capacity is large. It is suitable for both heavy loads and shock loads. It is mainly subjected to large radial loads, and in order to improve its bearing capacity, the raceway and roller crown profile can be trimmed.

Full complement cylindrical roller bearings generally consist of outer ring, inner ring and rollers. The ring has ribs on both sides.

The outer dimensions of QIBR cylindrical roller bearings conform to GB/T273.3 "Genera plan for the outer dimensions of rolling bearing radial bearing", GB/T283 "Dimensions of rolling bearing cylindrical roller bearings", GB/T285 "Dimensions of rolling bearing double row cylindrical roller bearings", JB/T5389.1 "Rolling bearing and four row cylindrical roller bearings for rolling mills" and other regulations.

The tolerance of QIBR standard cylindrical roller bearings meets the requirements of GB/T307.1 "Tolerance of rolling bearing radial bearing" and other standards.

The clearance of QIBR standard cylindrical roller bearings meets the requirements of GB/T4604 "radial clearance of rolling bearings".

The dimensional tolerance grade of QIBR cylindrical roller bearings is generally made according to P0 (normal grade) and clearance according to group 0 (basic group). If customers have other special requirements (including non-standard) for size, tolerance and clearance, QIBR are able to provide the corresponding product.

Cylindrical roller bearings code N.

Widely application: large and medium-sized motors, locomotive vehicle, machine tool spindles, internal combustion engines, generators, gas turbines, gearboxes, rolling mills, vibrating screens, and lifting and transportation machinery.

Bearing cage

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

The cage is divided into stamped cage, brass solid cage, reinforced nylon 66 etc. Bearing cages that operate under high temperature or harsh conditions are recommended to use steel cages or brass solid cages, four-row cylindrical roller bearing is recommended to use brass solid cages. 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 5%-10% longer than other bearings of the same model, through strict production process, high standard material selection, precision control.

Standard of bearing precision level