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What is a Cylindrical Roller Bearing (CRB)?
A CRB is a bearing with the rolling element in the form of rollers. These bearings have line contact between the rolling element and the inner and outer ring. Due to this particular design, these bearings are suited to withstand heavy radial load.
A CRB is made of following parts:
- Inner Ring
- Outer Ring
- Cage
- Rollers: These rollers are though cylindrical-shaped but are crown-shaped at the end, to minimize the stress concentration.
- Seal/Shield (as per bearing model)
Material Type Used in Cylinder Roller Bearing
Most of the cylindrical roller bearings are made up of an alloy of low-carbon steels. However, for some of the applications, the bearings may also be enriched with high levels of Carbon by the process of case hardening. The addition of Carbon, as well as alloy, often leads to a hard, fatigue-resistant case and a tough ductile core.
A cylindrical roller bearing can support the light-thrust movement, with the double-row type also able to support axial loads in both directions. Commonly found in fans, rollerblades, wheel bearings, and different applications on cars, etc cylindrical & Needle Roller Bearings. The new trend of spindles includes a series of high-precision ball and roller bearings such as silicon nitride cylindrical roller bearings.
The cylindrical roller bearings have greater radial load capacity than ball bearings of the same external dimensions and are particularly suitable for arduous duties. The roller bearings feature a modified line contact between rollers and raceways to eliminate edge stressing.
These bearings have a high radial load capacity and are suitable for high speeds. Due to the detachable design character, they have the advantage of mounting the inner ring and outer ring separately. The direction of axial load which a bearing can take depends upon the geometry of the bearing.
Bearing Selection
Design Parameters for consideration
- Static Axial & Radial loads
- Dynamic Axial & radial loads
- Rated speed
Applications of Cylinder Roller Bearing
- Power Transmission
- Process Industries
- Cement
- Rolling Mills
- Pulp and Paper
- Blowers
- Fans
- Gear Drives
- Traction Motors and Pumps
Advantages of Using CRB-Cylinder Roller Bearing
- Higher radial load carrying & impact load capacity due to line contact between rolling elements& rings
- Accommodate axial displacement
- Specially used for vibratory applications
- These bearings have a significantly longer life under axial loads and also have reduced friction thanks to the improved contact between the rollers and the ribs.
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