Thrust Self-aligning Roller Bearing
ISO 9001 Certified
TS 16949
Genuine SKF
Need Technical Advice?
Reply within 12 hours · 15+ certified engineers on call
Thrust Self-aligning Roller Bearing
21318 Spherical Roller Bearing Low Friction Self-Aligning for Gearbox
Keep your gearbox running smoothly with reduced wear and extended service life, thanks to our 21318 Spherical Roller Bearing. Engineered for low friction and self-aligning performance, it effortlessly handles misalignment and heavy radial loads, solving common operational disruptions in industrial setups.
- Double-row roller design ensures superior load distribution and stability, critical for high-torque applications
- Available with precision ratings from P0 to P2 and clearances C0/C3/C4, allowing customization to your exact gearbox specifications
- Constructed from high-quality bearing steel, it supports lubrication with grease or oil for versatile maintenance needs
- Measures 90*190*43mm, a standard size that fits seamlessly into most industrial gearbox assemblies
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 |
|---|---|
| Model Number | 21318 |
| Bearing Type | Spherical Roller Bearing |
| Lubrication | Grease or Oil |
| Precision Rating | P0 P6 P5 P4 P2 |
| Clearance | C0 C3 C4 |
| Rolling Body | Roller Bearings |
| The Number of Rows | Double |
| Material | Bearing Steel |
| Load Direction | Radial Bearing |
| Separated | Unseparated |
| Outer Dimension | 25mm-540mm |
| Specification | 90*190*43mm |
| Origin | China |
| HS Code | 8482300000 |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Gearbox | Transmission systems requiring misalignment compensation |
| Industrial Machinery | Heavy-duty rotating equipment with radial load requirements |
Need a Reliable 21318 Spherical Roller Bearing for Your Gearbox?
Selecting the right spherical roller bearing can be challenging when faced with inconsistent quality and limited supplier options. Many buyers encounter early bearing failure due to imprecise dimensions or substandard materials, leading to unexpected downtime and repair costs. Sourcing from multiple suppliers for different brands further complicates the process, wasting valuable time.
Engineered for Low Friction and Self-Aligning Performance
Our 21318 spherical roller bearing addresses these challenges with its low friction design and self-aligning capabilities, making it ideal for gearbox applications. As a专业轴承供应商 with ISO 9001 certified production processes, we ensure each bearing meets strict quality standards. Our extensive inventory includes both our own brand and major international brands, allowing you to source all your bearing needs from a single supplier.
Optimal Performance in Demanding Conditions
This spherical roller bearing excels in applications where misalignment occurs, such as gearboxes and heavy machinery. Its double row roller design handles high radial loads while the self-aligning feature compensates for shaft deflection and mounting errors. The bearing operates effectively with either grease or oil lubrication, adapting to various operating environments.
Key Engineering Features for Longevity
The 21318 bearing’s bearing steel construction provides excellent durability and wear resistance, ensuring a long service life even under heavy loads. Available precision ratings from P0 to P2 allow you to choose the right level of accuracy for your application, balancing performance and cost. Clearance options (C0, C3, C4) accommodate different thermal expansion requirements, preventing premature failure due to improper internal clearance. The unseparated design simplifies installation and maintenance, reducing downtime during assembly or replacement.
Why Choosing the Right Bearing Reduces Total Cost
Investing in a high-quality spherical roller bearing like the 21318 ultimately lowers your total cost of ownership. Inferior bearings often fail prematurely, causing production interruptions and requiring frequent replacements. Our bearings, manufactured to strict tolerances, minimize vibration and noise, reducing stress on adjacent components and extending overall equipment life. By selecting the appropriate precision rating and clearance, you ensure optimal performance, avoiding the hidden costs of rework and downtime.
Quality You Can Trust
Our production processes adhere to ISO 9001 standards, with rigorous testing at every stage. Raw materials are inspected for quality before production, and finished bearings undergo dimensional, hardness, and surface treatment checks. We stand behind our products with a warranty, offering replacements for any manufacturing defects. With access to a wide range of brands and models, we can fulfill your specific requirements, whether you need standard or custom solutions. Our substantial inventory ensures quick availability, minimizing lead times for your projects.
Packaging & Shipping
- Packaged in cartons and pallets for secure transportation
- Ready for immediate dispatch from stock
- Flexible shipping options including express, air, and sea freight
- Low minimum order quantity supported for both small and large purchases
Get Your 21318 Spherical Roller Bearing Quote Today
Whether you need the 21318 model or other bearing types, contact us with your requirements. Provide the model number, dimensions, quantity, and delivery location, and our team will promptly provide pricing and availability. Sourcing your bearings from a single, reliable supplier simplifies your procurement process and ensures consistent quality.
Frequently Asked Questions
Q: Do you supply bearings from other brands or only your own?
A: We offer a comprehensive range of bearings including our own brand and major international brands, as well as domestic quality brands. We can source specific brands or models according to your requirements.
Q: How can I confirm if the 21318 bearing fits my equipment?
A: Provide your equipment’s make, model, or the required bearing dimensions (bore diameter, outer diameter, width), and our technical team will verify compatibility with the 21318 specification.
Q: What is your warranty policy for bearings?
A: We provide a warranty against manufacturing defects. The specific terms and duration are detailed in our sales contract, ensuring coverage for any issues arising from production flaws.
Q: What is the minimum order quantity for the 21318 bearing?
A: We support low minimum order quantities, allowing you to purchase small batches for testing or maintenance needs, as well as large quantities for production requirements.
Q: How long does it take to ship after ordering?
A: The 21318 bearing is typically in stock and ready for immediate shipment. Delivery time depends on your location and chosen shipping method, with options for express delivery available.
Q: Can you provide custom (OEM/ODM) bearings?
A: Yes, we offer OEM and ODM services. We can manufacture bearings according to your specific drawings, specifications, or performance 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.
{{联系方式}}
Product Summary
- Product Name
- 21318 Spherical Roller Bearing Low Friction Self-Aligning for Gearbox
- 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
21318 Spherical Roller Bearing Low Friction Self-Aligning for Gearbox
NDA protected · Free samples for orders > $50K · Reply within 12 hours
Related Products
More Thrust Self-aligning Roller Bearing Products
Thrust Self-aligning Roller Bearing
22215-22219CCK Self-Aligning Roller Bearings High Quality
Thrust Self-aligning Roller Bearing
29317e Self Aligning Thrust Roller Bearing for Elevator
Thrust Self-aligning Roller Bearing