Thrust Self-aligning Roller Bearing
ISO 9001 Certified
TS 16949
Genuine SKF
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Thrust Self-aligning Roller Bearing
21311-21316CCK W33 Self-Aligning Roller Bearing
Keep your machinery running smoothly with reduced downtime using the reliable 21311-21316CCK W33 Self-Aligning Roller Bearing, designed to handle heavy radial loads while compensating for shaft misalignment.
- Self-aligning capability minimizes stress on shafts and housings, extending equipment lifespan in challenging operating environments
- CCK design ensures optimal internal clearance for consistent performance under varying temperature conditions
- W33 lubrication groove and hole simplify maintenance, keeping your operations efficient and cost-effective
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
Spécifications du produit
Adéquation de l'application
Need a Reliable 21311-21316CCK W33 Self-Aligning Roller Bearing? Here’s What Matters
Finding the right self-aligning roller bearing can be a challenge when dealing with equipment misalignment issues or trying to source specific models across multiple suppliers. Many procurement teams face delays from limited inventory, while maintenance managers worry about premature bearing failure due to poor material quality or incorrect lubrication design.
Built for Heavy-Duty Performance in Demanding Environments
The 21311-21316CCK W33 self-aligning roller bearing addresses these challenges with its robust design and compatibility with international standards. As a supplier with extensive experience across industrial sectors, we maintain ready stock of this bearing type, ensuring quick delivery for critical maintenance needs. Its self-aligning capability makes it ideal for applications like conveyor systems, mining equipment, and industrial gearboxes where shaft misalignment is common.
Optimal Performance in Misalignment-Prone Applications
This self-aligning roller bearing excels in operating conditions with moderate to heavy radial loads and occasional axial loads. Its spherical outer ring allows for angular misalignment up to 2-3 degrees, reducing stress on shafts and housings in equipment like vibrating screens and paper mill machinery. The CCK design (crowned inner ring with cylindrical bore) enhances load distribution, while the W33 lubrication groove and hole facilitate relubrication, extending service life in dusty or high-temperature environments.
Caractéristiques techniques clés pour la fiabilité
The 21311-21316CCK W33 bearing’s performance stems from critical design elements. The roller profile is optimized to minimize edge stress, distributing radial loads evenly across the raceway. Its precision-machined components ensure consistent dimensional accuracy, allowing for straightforward interchangeability with bearings from major manufacturers. The W33 lubrication system provides a maintenance path for补充 grease, essential in applications where complete disassembly for relubrication is impractical. Surface hardness of the raceways and rollers, typically 58-62 HRC, ensures resistance to wear and fatigue under continuous operation. Pourquoi le choix approprié du roulement réduit le coût total
Choosing the right self-aligning roller bearing directly impacts operational costs. A correctly specified bearing reduces unplanned downtime caused by premature failures, while its misalignment tolerance lowers installation and alignment costs. Inferior bearings often show early signs of overheating or vibration, leading to secondary damage to gears and shafts. By following ISO 281 load-life calculations and matching bearing capacity to application demands, this bearing delivers predictable performance, minimizing the total cost of ownership over time. Qualité sur laquelle vous pouvez compter
Our self-aligning roller bearings are produced under ISO 9001 certified processes, with raw material inspections and成品 testing for dimensional accuracy, hardness, and surface finish. Each bearing undergoes rigorous quality checks to ensure conformance with international standards. We provide a warranty against manufacturing defects, with clear terms for replacement or refund. Our global supply chain includes both自有品牌 and access to major international and domestic brands, allowing us to fulfill orders according to customer specifications. Emballage industriel neutre avec emballage protecteur Stock prêt pour expédition immédiate
Options de livraison flexibles incluant coursier express, fret aérien et fret maritime
To get pricing and availability for the 21311-21316CCK W33 bearing, please provide your required quantity and delivery location. We also welcome inquiries for other self-aligning roller bearing models or alternative brands—our technical team can assist with cross-referencing and compatibility checks to ensure you get the right bearing for your application. Foire aux questions Q: Fournissez-vous des roulements d'autres marques que les vôtres ?
A: Yes, we offer a full range of bearing brands including international manufacturers like SKF, NSK, NTN, Koyo, NACHI, IKO, FAG, Timken as well as domestic quality brands. We can source specific brands as per customer requirements. Q: Comment puis-je confirmer si ce roulement est adapté à mon équipement ?
A: Please provide the original equipment manufacturer (OEM) part number or the bearing dimensions (bore diameter, outer diameter, width), and our technical team will verify compatibility with your application. Q: Quelle est votre politique de garantie pour les roulements ?
A: We provide a warranty period covering manufacturing defects. If a bearing fails due to material or production issues, we offer replacement or refund according to the terms specified in the sales contract. Q : Quelle est la quantité minimale de commande pour ce roulement ?
A: We support low minimum order quantities, including single-unit purchases, to accommodate maintenance and repair needs as well as large-volume production orders. Q: Combien de temps prend l'expédition et quelles méthodes sont disponibles?
A: In-stock bearings are shipped within 1-2 business days. Shipping methods include express courier (3-5 days), air freight (5-7 days), and sea freight (3-6 weeks), depending on your location and urgency. Q: Can you provide custom-made (OEM/ODM) bearings? A: Yes, we offer OEM/ODM services for bearings manufactured to customer-provided drawings, specifications, or samples, including custom materials, dimensions, and surface treatments. Ready to order or need a quote?
Packaging & Shipping
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Product Summary
- Product Name
- 21311-21316CCK 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
21311-21316CCK W33 Self-Aligning Roller Bearing
NDA protected · Free samples for orders > $50K · Reply within 12 hours
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