21317-21324CCK W33 Self-Aligning Roller Bearing

Product Specifications

Application Suitability

Need Reliable 21317-21324CCK W33 Self-Aligning Roller Bearings? Avoid These Common Mistakes

Finding the right self-aligning roller bearing for heavy-duty equipment can be frustrating. Many buyers face downtime due to incorrect dimensions, struggle with limited brand options from single suppliers, or end up with bearings that fail prematurely in harsh conditions. As someone who’s worked with industrial bearings for years, I understand how critical it is to get this selection right the first time.

Built for Demanding Industrial Environments

Our 21317-21324CCK W33 self-aligning roller bearing addresses these challenges directly. With ISO 9001 certified manufacturing processes and access to a comprehensive range of brands—including both our own reliable products and international standards—we ensure you get the exact specification needed. Whether your application involves the oscillating movements of hydraulic cylinder articulation points in construction equipment or the heavy radial loads in mining conveyors, this bearing delivers consistent performance where it matters most.

Optimal Performance in Misaligned Conditions

This self-aligning roller bearing excels in applications where shaft misalignment is common. With its double-row design and spherical outer ring, it accommodates angular misalignment up to 2-3 degrees, reducing stress on associated components. It performs reliably under combined radial and axial loads, making it ideal for heavy machinery operating in dusty, vibrating environments typical of steel mills and power generation facilities.

Key Engineering Features Explained

The CCK design indicates a cylindrical bore with a tapered adapter sleeve, simplifying installation and removal—critical for maintenance efficiency. The W33 suffix denotes a lubrication groove and three oil holes in the outer ring, allowing for effective relubrication during operation, which extends service life in high-temperature applications. The bearing’s surface hardness, achieved through precise heat treatment, ensures resistance to wear even under continuous heavy loads. Its dimensional precision guarantees interchangeability with major international standards, eliminating fit issues when replacing existing components.

Why Bearing Quality Impacts Your Bottom Line

Choosing a substandard self-aligning roller bearing might save costs initially, but the hidden expenses add up quickly. Early failure can lead to unplanned downtime, expensive equipment repairs, and production losses—especially in critical systems like wind turbine gearboxes or steel mill rollers. Our bearings, manufactured to strict quality standards, help minimize these risks. By following ISO 281 guidelines for bearing life calculation, we ensure our products deliver predictable performance, reducing total cost of ownership over time through extended service intervals and fewer replacements.

Quality You Can Trust in Every Bearing

Packaging & Shipping

• Neutral industrial packaging with protective wrapping to prevent damage during transit
• Ready for immediate dispatch from stock for standard models
• Flexible shipping options including express courier, air freight, and sea freight
• Low minimum order quantity available, supporting both small maintenance orders and large production runs

Get Your 21317-21324CCK W33 Bearing Quote Today

Whether you need a single replacement bearing or a bulk order for your production line, we’re here to help. Provide us with your specific model requirements, quantity, and delivery location, and our team will respond promptly with pricing and availability. With our extensive network, we can also assist with sourcing other bearing types or brands to meet all your industrial needs.

Frequently Asked Questions