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Needle Bearing
Stainless Steel Needle Roller Bearing K42X48X35 K42X50X18 K42X50X20
Ensure smooth, long-lasting performance in your machinery with our precision-engineered Stainless Steel Needle Roller Bearing. Designed to reduce friction and handle radial loads efficiently, this bearing keeps your equipment running reliably even in demanding environments.
- Available in three critical sizes: K42X48X35, K42X50X18, and K42X50X20 to fit your specific assembly needs
- Stainless steel construction resists corrosion, eliminating premature wear from moisture or harsh conditions
- Needle roller design delivers high load capacity in a compact profile, saving space without sacrificing durability
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 | Stainless Steel Needle Roller Bearing |
| Model Number | K42X48X35, K42X50X18, K42X50X20 |
| Bore Diameter (d) | 42 mm |
| Outside Diameter (D) | 48 mm, 50 mm |
| Width (B) | 18 mm, 20 mm, 35 mm |
| Material | Stainless Steel |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Hydraulic Systems | Cylinder pivot points, piston rod guidance |
| Automation Equipment | Linear motion mechanisms, conveyor systems |
| Mechanical Engineering | Transmission assemblies, linkage connections |
Tired of Bearing Selection Headaches? Stainless Steel Needle Rollers K42X48X35/K42X50X18/K42X50X20
Specifying the right needle roller bearing can stop production lines in their tracks when dimensions don’t match or material quality fails. Many buyers waste hours cross-referencing metric and imperial standards, only to receive components that wear prematurely under heavy loads.
Engineered for Reliable Performance in Demanding Environments
Our stainless steel needle roller bearings address these challenges through ISO 9001-certified manufacturing processes and comprehensive quality testing. With interchangeable dimensions matching major international standards, these K42 series bearings fit seamlessly into existing hydraulic systems and automation equipment. Our extensive inventory ensures quick access to common sizes like K42X48X35, K42X50X18, and K42X50X20, eliminating long lead times.
Optimal Performance in Radial Load Applications
These needle roller bearings excel in applications with high radial loads and limited installation space. The 42mm bore diameter combined with 48-50mm outer diameters provides robust load capacity while maintaining compact dimensions—critical for hydraulic cylinder assemblies and precision automation mechanisms. The stainless steel construction offers enhanced corrosion resistance, making them suitable for damp or washdown environments where standard bearings would degrade quickly.
Key Engineering Features That Impact Service Life
The needle roller design maximizes load distribution across the bearing surface, allowing higher radial load capacities compared to ball bearings of similar size. This feature is particularly valuable in mechanical transmission systems where space constraints limit component size. The precision-ground raceways ensure consistent contact between rollers and surfaces, reducing vibration and noise during operation. Stainless steel material selection not only resists corrosion but also maintains structural integrity at operating temperatures ranging from -20°C to 120°C, suitable for most industrial environments.
Why Proper Bearing Selection Lowers Total Operating Costs
Choosing the correct needle roller bearing directly affects equipment uptime and maintenance expenses. Under-specifying bearings leads to premature failure, requiring costly replacements and unplanned downtime. Our K42 series bearings undergo rigorous hardness testing to ensure material integrity, with surface hardness exceeding 60 HRC for optimal wear resistance. By selecting the appropriate width—18mm, 20mm, or 35mm—based on load requirements, operators can extend service intervals and reduce overall maintenance costs.
Quality Assurance You Can Verify
Every bearing in our inventory follows strict quality control protocols, from raw material inspection to final dimensional verification. Our ISO 9001 certification ensures consistent manufacturing processes, while finished products undergo precision measurement checks for bore diameter, outer diameter, and width tolerances. We provide a standard质保期 against manufacturing defects, with clear procedures for returns and replacements. As a full-range bearing supplier, we source from established manufacturers and can provide material certificates upon request for critical applications.
Packaging & Shipping
- Neutral industrial packaging with protective wrapping
- Same-day shipping for in-stock items
- Flexible logistics options including express courier, air freight, and sea transport
- Low minimum order quantity available for prototype and maintenance requirements
Get Your Bearing Quote Today
Whether you need the K42X48X35, K42X50X18, K42X50X20, or other needle roller bearing sizes, we can provide competitive pricing and availability. Share your exact model number or dimensional requirements, and our technical team will confirm compatibility with your application. Early order confirmation ensures priority handling and faster delivery.
Frequently Asked Questions
Q: Do you supply bearings from other brands or model ranges?
A: Yes, we offer comprehensive bearing procurement services covering both our own brand and major international manufacturers, as well as domestic quality brands. We can source specific models as per customer requirements.
Q: How can I confirm if the K42 series bearings will fit my equipment?
A: Provide your existing bearing’s dimensions (bore diameter, outer diameter, width) or equipment model number, and our technical team will verify compatibility and suggest appropriate alternatives if needed.
What is your warranty policy for these needle roller bearings?
A: We provide a standard质保 period covering manufacturing defects. Specific terms are detailed in our sales contract, and we handle returns for verified quality issues according to established procedures.
What is the minimum order quantity for the K42 series bearings?
A: We support low minimum order quantities, including single-unit purchases for maintenance and repair needs, with volume pricing available for larger orders.
How quickly can you ship the K42X48X35/K42X50X18/K42X50X20 bearings?
A: Stock items are shipped the same business day when orders are confirmed before 12:00 PM local time. For non-stock items, lead times vary by manufacturer and are provided during the quoting process.
Do you offer custom bearing solutions if standard sizes don’t meet my requirements?
A: Yes, we support OEM/ODM customization for special applications. Provide your technical drawings or performance specifications, and we can develop tailored bearing solutions.
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
- Stainless Steel Needle Roller Bearing K42X48X35 K42X50X18 K42X50X20
- 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.
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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
Stainless Steel Needle Roller Bearing K42X48X35 K42X50X18 K42X50X20
NDA protected · Free samples for orders > $50K · Reply within 12 hours
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