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TS 16949
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Needle Bearing
Needle Roller Bearings K42X50X17–K50X58X25, High-Precision, Low-Friction
Basic Info
| Inner Diameter | 50 mm |
|---|---|
| Outer Diameter | 58 mm |
| Thickness | 25 mm |
| Type | Needle Roller Bearing, Closed, Radial |
| Material | Bearing Steel |
| Lubrication | Grease or Oil |
Introduction
High-precision needle roller bearing (K50X58X25) with radial load capacity, no inner/outer ring design, P0–P2 precision options, C0–C4 clearance, and OEM/ODM service. Made in China.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
Key Specifications & Benefits of SKF-Grade Needle Roller Bearings
| Feature | Description |
| Precision Dimensions | K42×50×17 / K45×53×20 / K48×54×25 / K50×58×20 / K50×58×25 mm — tight tolerance (P0–P2) for exact fit in compact machinery |
| Radial Load Capacity | Optimized for high radial loads with minimal axial space — ideal for gearboxes, transmissions & engine components |
| Bearing Steel Construction | GCr15 chrome steel (equivalent to SKF SS 2209), hardened to HRC 58–64 for extended service life |
| Ringless Design | Without inner/outer ring — saves weight and space; uses shaft/bore as raceway (ISO 3245 compliant) |
| Lubrication Flexibility | Pre-greased or oil-lubricated compatible — supports continuous operation under moderate speeds & temps |
| Closed Type Sealing | Dust- and leak-resistant design — reduces maintenance frequency and contamination risk |
| Clearance Options | C0 (standard), C3 (increased), C4 (extra-wide) — ensures thermal expansion compatibility |
| Global Compliance | HS Code 8482102000; meets ISO, DIN, and ABEC standards — certified for EU/US/ASEAN markets |
| OEM/ODM Ready | Custom branding, packaging & specs — backed by 1M pcs/month production capacity & 3–7 day lead time |
| Quality Assurance | 100% dimensional inspection + noise & rotation testing — zero defect policy per ISO 9001 |
Engineered for reliability where space is limited and load is critical — these needle roller bearings deliver SKF-level performance at competitive trade pricing. Trusted in automotive, agricultural, and industrial OEM applications across 40+ countries. Have a custom requirement or need technical support? Send your inquiry now — our bearing specialists reply within 2 hours.
Product Summary
- Product Name
- Needle Roller Bearings K42X50X17–K50X58X25, High-Precision, Low-Friction
- 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
Needle Roller Bearings K42X50X17–K50X58X25, High-Precision, Low-Friction
NDA protected · Free samples for orders > $50K · Reply within 12 hours
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