23220CA-2RS Sealed Spherical Roller Bearing

Integrated Dust Defense (2RS): Heavy-duty NBR rubber seals eliminate the need for complex, expensive external housing seal setups, drastically cutting maintenance costs.
Machined Brass Cage (CA): Retaining prongs physically grip the rollers, preventing cage fracture under heavy vibration and shock loads.
Pre-Lubricated & Maintenance-Free: Factory-packed with premium high-load grease, ready to be installed directly into the harshest industrial environments.

Technical Specifications

Item	Specification
Bearing Type	Sealed Spherical Roller Bearing
Model	23220CA-2RS
Roller Type	Symmetrical Spherical Roller
Number of Rows	Double Row
Material	GCr15 / SAE 52100 / 100Cr6
Cage Material	Machined Brass (CA)
Seal Type	2RS (Double-Sided Rubber Seals)
Lubrication	Pre-filled High-Pressure Grease
Precision Grade	P0 / P6

Deep Application & Technical Narrative

The 23220CA-2RS represents the pinnacle of heavy-duty bearing technology tailored for highly contaminated environments. This spherical roller bearing combines the massive load-carrying capacity of a heavy "23" series dimension, the structural superiority of a machined brass cage (CA), and the ultimate protection of integrated double rubber seals (2RS). It is the premier choice for mining conveyors, rock crushers, and cement plant bucket elevators where abrasive dust destroys standard open bearings. Incorporating rubber seals into a spherical bearing requires exact dimensional tolerances to prevent the seal lips from burning up against the inner ring. Inside our specialized residential assembly facility, our technicians manually test the rotational drag and physically verify the seal seating of every unit. This meticulous, hands-on oversight guarantees a bearing that locks out destructive silica dust and keeps equipment running flawlessly.

Targeted Technical Clarifications (FAQ)

Q: Can a sealed spherical bearing operate at the same speed as an open one?
A: No, the 23220CA-2RS has a lower maximum RPM limit than the unsealed 23220CA due to the friction and heat generated by the rubber seal lips making contact with the inner ring.
Q: Is it possible to re-grease the 2RS version?
A: Most 2RS spherical bearings are designed to be sealed for life. However, some variants include a lubrication groove and holes (W33 feature) on the outer ring, though the seals make purging old grease difficult.