Thrust Self-aligning Roller Bearing
ISO 9001 Certified
TS 16949
Genuine SKF
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Thrust Self-aligning Roller Bearing
21315-21319CAK W33 Self-Aligning Roller Bearing
Ensure smooth, reliable operation even under misalignment with the 21315-21319CAK W33 Self-Aligning Roller Bearing. This high-performance component minimizes downtime by accommodating angular deviations, letting your machinery run longer with less maintenance stress.
- Engineered with a cylindrical bore and W33 lubrication groove for consistent grease distribution, ideal for heavy-duty industrial applications
- Self-aligning design reduces shaft stress and extends equipment lifespan, solving common alignment challenges in dynamic systems
7
Day Prototype
vs. 8-12 wks standard
50+
Countries Served
Global logistics network
12h
Quote Response
Expert engineers on call
Typical Applications
Wind Power
Mining
Steel & Metallurgy
Automotive / EV
Rail Transit
Precision Machinery
Genuine SKF Bearings
NDA Protected
Free Sample for Orders > $50K
Global Shipping
Product Details
Product Specifications
| Parameter | Details |
|---|---|
| Bearing Type | Self-Aligning Roller Bearing |
| Model Number | 21315-21319CAK W33 |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Construction Machinery | Excavator boom pivots, bulldozer track rollers |
| Steel Metallurgy | Continuous casting machine rollers, rolling mill stands |
| Mining | Conveyor belt idlers, crusher bearings |
| Wind Energy | Yaw drive systems, gearbox support bearings |
Struggling with Bearing Misalignment Issues? The 21315-21319CAK W33 Self-Aligning Roller Bearing Offers a Solution
Equipment downtime from bearing failure costs manufacturers thousands in lost production. Many maintenance teams face repeated issues with premature wear caused by shaft misalignment or inconsistent quality from low-cost suppliers. Sourcing the right self-aligning roller bearing often means navigating dozens of brands and technical specifications.
Engineered for Heavy-Duty Performance in Demanding Environments
The 21315-21319CAK W33 self-aligning roller bearing addresses these challenges through its robust design and precision manufacturing. As a professional bearing supplier with ISO 9001 certified production processes, we ensure each unit meets strict dimensional and hardness standards. Our extensive inventory includes this model alongside thousands of other roller bearings, supporting quick turnaround for critical repairs in industries like mining and steel production.
Optimal Performance in Misalignment-Prone Applications
This bearing excels in applications where shaft deflection or mounting errors are common. The self-aligning design accommodates angular misalignment up to 2-3 degrees, making it ideal for heavy machinery like construction equipment articulation points and conveyor systems. Its CAK configuration (carrier-guided roller and tapered bore) provides enhanced radial load capacity, handling dynamic forces typical in steel mill roll stands and wind turbine gearboxes.
Key Engineering Features That Maximize Service Life
The W33 lubrication groove and holes simplify maintenance by allowing grease replenishment without disassembly, reducing downtime during scheduled service. Constructed with high-carbon chromium steel, the bearing races undergo precision heat treatment to achieve surface hardness of HRC 58-62, critical for resisting wear in abrasive mining environments. The cylindrical roller design distributes load evenly across the raceway, improving fatigue life compared to ball bearings in similar applications. Tapered bore (1:12) facilitates easy mounting and dismounting, a valuable feature for equipment with frequent maintenance cycles.
Total Cost of Ownership: Why Quality Matters More Than Initial Price
Choosing a precision-manufactured self-aligning roller bearing reduces long-term costs by minimizing unplanned downtime. Inferior bearings often fail prematurely due to substandard material hardness or inaccurate tolerances, leading to costly equipment repairs and production losses. This model’s compliance with international dimensional standards ensures interchangeability with major brands, simplifying replacement and reducing inventory costs. By selecting bearings that match your application’s load requirements and operating conditions, you optimize equipment reliability and extend service intervals.
Quality Assurance You Can Verify
Our production and inspection processes adhere to ISO 9001 standards, with raw material verification and comprehensive成品 testing for dimensional accuracy, surface finish, and hardness. Each bearing undergoes dynamic load testing to ensure performance under operational conditions. We provide a standard质保期 covering manufacturing defects, with clear procedures for replacement or refund if issues arise. As a supplier with access to both自有品牌 and international brand bearings, we can source this exact model or equivalent alternatives according to your specifications.
Packaging & Shipping
- Neutral industrial packaging with anti-corrosion protection
- Available from stock for immediate dispatch
- Flexible shipping options including express courier, air freight, and sea freight
- Low minimum order quantity supported, from single units to bulk orders
Get Your 21315-21319CAK W33 Bearing Quote Today
Whether you need a single replacement bearing or bulk quantities for ongoing production, we can provide competitive pricing and fast delivery. Contact us with your specific requirements, including quantity and delivery location, and our technical team will confirm availability and provide a detailed quote within 24 hours.
Frequently Asked Questions
Q: Do you supply bearings from other brands besides your own?
A: Yes, we offer a full range of bearings including international brands like SKF, NSK, NTN, Koyo, NACHI, IKO, FAG, Timken as well as domestic quality brands. We can source specific brands or models according to customer requirements.
Q: How can I confirm if this bearing will fit my equipment?
A: Provide your equipment model or existing bearing dimensions (bore diameter, outer diameter, width) and our technical team will verify compatibility with the 21315-21319CAK W33 specifications.
Q: What is your warranty policy for bearings?
A: We provide a warranty period covering manufacturing defects. If a bearing fails due to material or production issues within the warranty period, we will arrange replacement or refund according to the terms specified in our sales contract.
Q: What is the minimum order quantity for this bearing?
A: We accept low minimum order quantities, including single unit purchases, to support maintenance and repair needs as well as larger production orders.
Q: How quickly can you ship this bearing after order placement?
A: This model is typically available from stock and can be shipped within 1-2 business days. Shipping time depends on the selected logistics method and destination.
Q: Do you offer custom bearing solutions?
A: Yes, we support OEM and ODM customization according to customer-provided drawings, specifications, or samples for special application requirements.
Ready to order or need a quote?
Send the bearing model, dimensions (d x D x B), and quantity — we’ll get back to you with pricing and lead time.
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Product Summary
- Product Name
- 21315-21319CAK W33 Self-Aligning Roller Bearing
- Category
- Thrust Self-aligning Roller Bearing
- Brand
- SKF
- Certification
- ISO 9001 · TS 16949
- Lead Time
- 7 Working Days
Get a Custom Quote
Our engineers will respond within 12 hours with a tailored solution.
Request QuoteGeneral Specifications
| Bearing Type | Thrust Self-aligning Roller Bearing |
| Brand | SKF |
| Quality Standard | ISO 9001 / TS 16949 |
| Precision Grade | P0 / P5 / P6 (custom) |
| Material | Chrome Steel / Stainless |
| Cage Material | Steel / Brass / Polyamide |
| Lubrication | Grease / Oil (specify) |
| Operating Temp. | -40°C to +200°C |
| Min. Order Qty | 1 pc (samples available) |
| Prototype Lead Time | 7 Working Days |
Performance Parameters
| Load Capacity | Contact for C0/Cr values |
| Speed Rating | Contact for ndm limit |
| Vibration Level | Z1 / Z2 / Z3 (custom) |
| Noise Level | V1 / V2 / V3 (custom) |
| Fatigue Life | L10h per ISO 281 |
| Sealing Options | Open / Z / 2Z / RS / 2RS |
Custom Specifications Available
Our engineering team can modify bearing dimensions, materials, seals, and clearances to meet your specific operating requirements. Submit your drawing or spec sheet for a tailored proposal.
Wind Power
Main shaft bearings, gearbox bearings, and generator bearings for onshore and offshore wind turbines.
Mining & Quarrying
Heavy-duty bearings for crushers, conveyors, and rotary equipment in extreme dust and shock-load environments.
Steel & Metallurgy
High-temperature bearings for rolling mills, continuous casting, and furnace applications.
Automotive / EV
Wheel hub bearings, transmission bearings, and e-motor bearings for passenger and commercial vehicles.
Rail Transit
Axle box bearings, traction motor bearings, and gearbox bearings meeting EN/UIC railway standards.
Precision Machinery
High-precision spindle bearings, angular contact bearings, and super-precision bearings for CNC and robotics.
Application Design
EngineeringOur engineers analyze your operating conditions -- load, speed, temperature, environment -- and select or design the optimal bearing solution to maximize service life and reduce total cost of ownership.
Custom Modification
7-Day TurnaroundNeed non-standard dimensions, special materials, or modified clearances? We can modify standard SKF bearings or manufacture fully custom solutions with a 7-day prototype turnaround.
Failure Analysis
DiagnosticsWhen bearings fail prematurely, our team conducts root-cause analysis using advanced diagnostic tools to identify the failure mode and recommend corrective action.
Predictive Maintenance
Up to 40% Less DowntimeWe deploy vibration monitoring, thermal imaging, and oil analysis programs that detect bearing deterioration early -- reducing unplanned downtime by up to 40%.
On-site Installation
Global CoverageProper installation is critical to bearing performance. Our certified technicians provide on-site installation support, alignment verification, and operator training worldwide.
Lifecycle Support
Enterprise SLAFrom initial selection through end-of-life, our dedicated account managers provide scheduled maintenance plans, re-lubrication programs, and replacement forecasting for enterprise clients.
Why SKF China
The engineering partner advantage
7 Days
Prototype Lead Time
vs. 8-12 weeks via standard channels
15+
Certified Engineers
SKF-certified, on-call for your project
50+
Countries Delivered
Reliable global logistics network
Request a Quote
Get a custom quote for
21315-21319CAK W33 Self-Aligning Roller Bearing
NDA protected · Free samples for orders > $50K · Reply within 12 hours
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