21317-21324CAK W33 Self-Aligning Roller Bearings

Product Specifications

Application Suitability

Need 21317-21324CAK W33 Self-Aligning Roller Bearings? Avoid Common Sourcing Headaches

Searching for the right self-aligning roller bearings can feel like navigating a maze of incompatible dimensions and questionable quality. Many buyers face costly delays when suppliers can’t match exact specifications, or worse, receive bearings that fail prematurely due to substandard materials. Sourcing across multiple brands to compare options only adds to the complexity.

Engineered for Reliable Performance in Demanding Environments

The 21317-21324CAK W33 self-aligning roller bearings address these challenges through interchangeable dimensions with major international standards, ensuring compatibility with existing equipment. Our ISO 9001-certified production and inspection processes verify critical factors like material hardness and dimensional accuracy, reducing the risk of premature wear in heavy-duty applications such as conveyor systems and industrial gearboxes. With access to extensive inventory across leading brands, we eliminate the need for multi-supplier sourcing.

Optimal Performance in Misalignment-Prone Applications

These self-aligning roller bearings excel in applications where shaft misalignment is common, such as textile machinery and mining equipment. Their design accommodates angular misalignment up to 2-3 degrees, reducing stress on adjacent components while maintaining load-carrying capacity. The W33 designation indicates a lubrication groove and three oil holes in the outer ring, facilitating maintenance in hard-to-reach installations where frequent relubrication is challenging.

Key Engineering Features for Long Service Life

The CAK design combines a brass cage (C) with an inner ring featuring a tapered bore (K) and a locking slot (A), allowing secure mounting on tapered shafts for applications requiring precise axial positioning. The self-aligning capability ensures even load distribution across the rollers, minimizing edge stress and extending bearing life. Dynamic load ratings are optimized through controlled roller profile design, while the outer ring’s sphered outer diameter allows for automatic adjustment to shaft deflection under heavy radial loads.

Total Cost of Ownership: Why Quality Matters More Than Price

Choosing bearings based solely on upfront cost often leads to higher long-term expenses. Inferior bearings with inadequate hardness (below HRC 58-62) typically exhibit accelerated wear, causing increased vibration, noise, and unplanned downtime. Our bearing selection process focuses on matching the bearing’s dynamic load rating (C) and static load rating (C0) to application requirements, following ISO 281 principles for calculated service life. This approach reduces replacement frequency and associated labor costs, delivering better value over the bearing’s operational lifetime.

Quality You Can Rely On

Packaging & Shipping

• Standard industrial packaging with moisture-resistant wrapping
• Available from stock for immediate dispatch
• Multiple shipping options including express courier, air freight, and sea freight
• Low minimum order quantity supported, ideal for maintenance and repair needs

Get Your 21317-21324CAK W33 Bearing Quote Today

Whether you need a single replacement bearing or a bulk order, provide your exact model requirements, quantity, and delivery location, and we’ll promptly confirm availability and pricing. Our technical team can also assist with cross-referencing if you need alternatives to specific brand designs.

Frequently Asked Questions