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Needle Bearing
LB25UU-LB50UU Needle Roller Bearings – High-Precision, Low-Friction
Basic Info.
| Inner Diameter | 25 mm |
|---|---|
| Outer Diameter | Not applicable (without outer/inner ring) |
| Thickness | Not specified |
| Type | Closed Needle Roller Bearing |
| Material | Bearing Steel |
| Lubrication | Grease or Oil |
Introduction
LB25UU is a radial needle roller bearing without outer or inner rings, made of high-grade bearing steel. Designed for compact applications requiring high load capacity in limited space. Features closed construction, P0–P2 precision options, C0–C4 clearance, and supports OEM/ODM service. Delivered in 3–7 days.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 LB Series Needle Roller Bearings
| Description | Core Value |
|---|---|
| Model Range: LB25UU to LB50UU | Standardized, interchangeable sizes for global OEM compatibility |
| Radial Load Design | Optimized for high radial load capacity in compact spaces |
| Ringless Construction (No Inner/Outer Ring) | Reduces weight & installation footprint; ideal for hardened shaft/housing applications |
| Bearing Steel (GCR15 / SUJ2 Equivalent) | Precision-ground rollers ensure durability and fatigue resistance |
| Closed Type with Sealed Ends | Pre-lubricated & dust/moisture resistant — zero maintenance required |
| Precision Grades: P0–P2 | Meets strict SKF-equivalent tolerances for smooth, low-noise operation |
| Clearance Options: C0/C3/C4 | Enables thermal expansion compensation in high-speed or high-temp environments |
| Lubrication: Grease or Oil Compatible | Flexible integration into existing lubrication systems |
| Origin & Certification: Made in China, HS 8482102000 | Export-compliant, CE/ISO9001 audited production (1M units/year capacity) |
| OEM/ODM Support + BDL Trademark | White-label ready — full technical documentation & custom packaging available |
These needle roller bearings excel in automotive transmissions, industrial gearboxes, robotics joints, and agricultural machinery — where space is tight but load demands are high. Unlike generic imports, our LB series features tighter raceway roundness (<0.8μm), 100% roller hardness verification (60–64 HRC), and double-lip NBR seals for IP54 protection. FAQs: Q: Can LB30UU replace SKF NKX30? A: Yes — identical bore (30mm), OD (42mm), width (24mm), and load rating. Q: Are cages included? A: No — cageless design maximizes roller count and load capacity. Q: What’s the max speed? A: Up to 6,000 rpm (with proper lubrication & cooling). Ready to request a quote or sample? Contact us today.
Product Summary
- Product Name
- LB25UU-LB50UU Needle Roller Bearings – 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
LB25UU-LB50UU Needle Roller Bearings – High-Precision, Low-Friction
NDA protected · Free samples for orders > $50K · Reply within 12 hours
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