ISO 9001 Certified
TS 16949
Genuine SKF
Need Technical Advice?
Reply within 12 hours · 15+ certified engineers on call
Needle Bearing
Custom NK20/20 NK21/16 NK21/20 Needle Roller Bearings Factory
Get precise, long-lasting rotation in your machinery with our Custom Needle Roller Bearings—engineered to minimize friction and maximize load capacity for smooth, reliable performance. Whether you need NK20/20, NK21/16, or NK21/20 sizes, our factory-direct parts ensure a perfect fit that reduces downtime and extends equipment life.
- Precision-ground raceways deliver consistent torque transfer, ideal for high-speed applications where every micron counts
- Custom sizing options eliminate the hassle of adapting standard bearings to non-standard shafts, saving you time and frustration
- Hardened steel construction resists wear under heavy loads, keeping your operations running longer between replacements
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 | Needle Roller Bearings |
| Model Number | NK20/20, NK21/16, NK21/20 |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Automation Equipment | Linear motion systems, precision slides |
| Hydraulic Systems | Cylinder piston rods, hydraulic actuators |
| Automotive | Transmission components, steering linkages |
| Industrial Machinery | Conveyor systems, material handling equipment |
Struggling with Needle Roller Bearing Selection? NK20/20, NK21/16, NK21/20 Solutions
Finding the right needle roller bearings for your equipment often means navigating complex part numbers, inconsistent quality, and limited supplier options. Many buyers face downtime when bearings fail prematurely due to poor material quality or incorrect sizing—costing far more than the initial purchase price.
Engineered for Reliable Performance in Critical Applications
Our needle roller bearings (NK20/20, NK21/16, NK21/20) address these challenges through ISO 9001-certified manufacturing processes and strict quality control. As a professional bearing supplier with extensive experience across industries, we maintain ready inventory of these models to ensure quick delivery, while our ability to source from global and domestic brands means you get the right bearing for your specific requirements.
Optimal Performance in High-Load, Compact Spaces
Needle roller bearings excel in applications where radial space is limited but high load capacity is required. The NK20/20, NK21/16, and NK21/20 models are designed to handle moderate to heavy radial loads with minimal friction, making them ideal for precision machinery, hydraulic cylinders, and automotive transmissions where space constraints demand a compact bearing solution.
Key Engineering Features for Long Service Life
The performance of these needle roller bearings stems from critical design elements. Precision-ground raceways ensure uniform load distribution, reducing stress concentrations that cause premature failure. High-carbon chromium steel construction provides the necessary surface hardness (typically 60-65 HRC) to resist wear under continuous operation. The optimized needle roller complement balances load capacity with rotational smoothness, while tight dimensional tolerances ensure interchangeability with major international standards—simplifying replacement and reducing inventory costs.
Why Quality Bearings Lower Total Cost of Ownership
Choosing substandard needle roller bearings may save upfront costs but often leads to unplanned downtime, increased maintenance, and potential damage to adjacent components. A bearing that fails prematurely in a hydraulic system, for example, can contaminate fluid, damage cylinder walls, and require extensive repairs. Our bearings, backed by rigorous testing for dimensional accuracy and material integrity, minimize these risks—delivering consistent performance that lowers long-term operational expenses.
Quality You Can Rely On
Our manufacturing and inspection processes adhere to ISO 9001 standards, with raw material verification and成品 testing for dimensions, hardness, and surface finish. Every bearing comes with a warranty against manufacturing defects, and our technical team can assist with installation guidance to ensure optimal performance. With access to a wide range of brands and models, we can fulfill both standard and custom requirements, backed by inventory that supports quick turnaround for urgent orders.
Packaging & Shipping
- Neutral industrial packaging with protective wrapping
- Same-day dispatch for in-stock items
- Flexible shipping options: express courier, air freight, or sea freight
- Low minimum order quantity, suitable for both small repairs and large production runs
Get Your Needle Roller Bearing Quote Today
Whether you need NK20/20, NK21/16, NK21/20, or other needle roller bearings, provide your required model, quantity, and delivery location, and we’ll promptly share pricing and availability. Our team can also help verify compatibility with your equipment to ensure you get the right bearing the first time.
Frequently Asked Questions
Q: Can you supply other brands or models of needle roller bearings?
A: Yes, we support inquiries for all major brands and models, and can supply bearings according to your specific brand or dimensional requirements.
Q: How do I confirm if these bearings will fit my equipment?
A: Provide your equipment model or the required dimensions (bore diameter, outer diameter, width), and our technical team will verify compatibility with the NK20/20, NK21/16, or NK21/20 specifications.
Q: What is your warranty policy for these bearings?
A: We provide a warranty against manufacturing defects; specific terms are outlined in our sales agreement, and defective products can be replaced or refunded.
Q: What is the minimum order quantity for these needle roller bearings?
A: We offer low minimum order quantities, supporting small-batch purchases for maintenance and larger orders for production needs.
Q: How quickly can you ship the NK20/20, NK21/16, and NK21/20 bearings?
A: In-stock bearings are shipped the same day; for custom or non-stock items, lead times depend on the manufacturer and will be confirmed upon ordering. We offer courier, air, and sea shipping options.
Q: Do you offer OEM/ODM customization for needle roller bearings?
A: Yes, we support custom bearing manufacturing based on your drawings, specifications, or sample 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
- Custom NK20/20 NK21/16 NK21/20 Needle Roller Bearings Factory
- Category
- Needle 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 | Needle 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
Custom NK20/20 NK21/16 NK21/20 Needle Roller Bearings Factory
NDA protected · Free samples for orders > $50K · Reply within 12 hours
Related Products
