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.
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Warranty 1 year
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Description
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.
