ISO 9001 Certified
TS 16949
Genuine SKF
Need Technical Advice?
Reply within 12 hours · 15+ certified engineers on call
Needle Bearing
Needle Roller Bearings K32X40X25–K40X50X18, High-Precision, Low-Friction
Basic Info.
| Inner Diameter | 32 mm |
| Outer Diameter | 40 mm |
| Thickness | 25 mm |
| Type | Needle Roller Bearing, Closed, Radial |
| Material | Bearing Steel |
| Lubrication | Grease or Oil |
Introduction
High-precision needle roller bearing (K32X40X25) with no inner/outer ring design, ideal for compact radial load applications. Made of premium bearing steel, pre-lubricated with grease or oil. Available in precision grades P0–P2 and clearances C0–C4. Fast delivery (3–7 days) and OEM/ODM support.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 & Advantages of SKF-Grade Needle Roller Bearings
| Description | Core Value |
|---|---|
| Models: K32X40X25, K35X40X27, K35X46X20, K38X45X21, K40X50X18 | Precision-engineered for interchangeability and OEM fit |
| Radial Load Direction + Compact Design | Maximizes load capacity in minimal axial space — ideal for tight assemblies |
| Without Inner/Outer Ring (Drawn Cup) | Reduces weight & cost; enables direct housing bore mounting |
| Bearing Steel (GCR15 / SUJ2 Equivalent) | High hardness, wear resistance & fatigue life — meets SKF material standards |
| Closed Type with Sealed Ends | Prevents contamination & retains lubricant — extends service life 2–3× vs open types |
| P0–P2 Precision Grades & C0–C4 Clearance Options | Ensures smooth operation under high-speed or high-precision applications |
| Grease or Oil Lubrication Compatible | Flexible maintenance — supports long-interval relubrication & sealed-for-life setups |
| Made in China (ISO 9001 / IATF 16949 Certified) | Rigorous QA: 100% dimensional inspection, noise testing, and life validation |
| HS Code 8482102000 — Customs-Ready | Faster clearance & full documentation support for global buyers |
| Common Applications | Automotive transmissions, power tools, agricultural gearboxes, industrial pumps & robotics joints |
Why Choose These Over Generic Brands? Higher needle density, tighter raceway roundness (<±0.8µm), and consistent heat treatment yield 35% higher dynamic load ratings than standard equivalents.
FAQ: Q: Are these compatible with SKF mounting dimensions? A: Yes — fully interchangeable per ISO 3245. Q: Can they handle shock loads? A: Optimized cage design + hardened rollers ensure excellent impact resistance. Q: What’s the typical L10 life at rated load? A: ≥8,000 hrs under proper lubrication and alignment.
Need volume pricing, custom packaging, or technical drawings? Send your inquiry now — our SKF-trained engineers reply within 2 business hours.
Product Summary
- Product Name
- Needle Roller Bearings K32X40X25–K40X50X18, 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 K32X40X25–K40X50X18, High-Precision, Low-Friction
NDA protected · Free samples for orders > $50K · Reply within 12 hours
Related Products
More Needle Bearing Products
