What Are the Characteristics of Full Complement Cylindrical Roller Bearings?

Full complement cylindrical roller bearing are a type of bearing without a cage, capable of accommodating the maximum number of rollers. They are widely used in machinery.  

Under the same width, compared with traditional bearings with a cage, this type of bearing has a higher load-carrying capacity and a smaller radial cross-section, which saves space, but its rotational speed is relatively low.  

During continuous operation, the bearing must bear a certain minimum load, i.e., C/P < 25. Otherwise, insufficient lubrication and high-speed operation will intensify wear. To ensure the normal operation of the bearing, all multi-row cylindrical roller bearings are equipped with a lubrication groove and lubrication holes on the outer ring.  

The main characteristics of full complement cylindrical roller bearing include the following:  

1. High Rigidity: Without a cage, cs can withstand large radial and axial loads, thus having high rigidity.  

2. High Load-Carrying Capacity: Due to the large contact area between the rollers and the inner/outer rings, they possess high load-carrying capacity.  

3. Low Vibration and Noise: Since there is no friction from a cage, full complement cylindrical roller bearing generate low vibration and noise.  

4. Rotational Speed Limitation: Owing to the large contact area between the rollers and the inner/outer rings, they are not suitable for high-speed rotation.  

5. Easy Maintenance: Full complement cylindrical roller bearings have good sealing performance, making them easy to maintain.  

It should be noted that full complement cylindrical roller bearing generally cannot withstand overturning moments. If overturning moment resistance is required, other types of bearings (such as self-aligning roller bearings) should be used.  

Key Terminology Explanation (for Clarity)  

Full complement cylindrical roller bearing: A bearing design that omits the cage to maximize the number of rollers, optimizing load capacity (distinct from "caged cylindrical roller bearings" with spacing elements).  

A critical parameter in bearing engineering, where "C" refers to the basic dynamic load rating (the load a bearing can withstand for 1 million revolutions without fatigue failure), and "P" is the actual applied load. The C/P < 25 requirement ensures adequate lubrication and prevents premature wear.  

Overturning moment: A torque that tends to tilt the bearing (e.g., uneven load distribution), which full complement designs cannot resist due to their structural focus on radial/axial load handling.