The INA LR50/8-NPP-U is a heavy-duty sealed track roller bearing specially engineered for linear motion, cam drive and rolling guide systems. As a high-performance INA track roller bearing, this LR50/8-NPP-U unit features dual NPP rubber seals, robust outer ring structure and excellent shock resistance, delivering stable low-friction operation for long-cycle industrial equipment.
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The INA LR50/8-NPP-U is a heavy-duty sealed track roller bearing specially engineered for linear motion, cam drive and rolling guide systems. As a high-performance INA track roller bearing, this LR50/8-NPP-U unit features dual NPP rubber seals, robust outer ring structure and excellent shock resistance, delivering stable low-friction operation for long-cycle industrial equipment.
Compliant with ISO bearing standards, its precise dimension parameters are as follows: bore diameter 8 mm, outer diameter 24 mm, overall width 11 mm, minimum chamfer 0.5 mm, and standard PN tolerance grade. Complete dimensional consistency ensures precise fitting for shaft and housing assembly in limited installation space.
All load-bearing components adopt premium bearing steel materials. The inner ring, outer ring and rolling elements are made of 100Cr6 high-carbon chromium steel, reaching HRC 60–64 hardness with superior wear resistance, contact fatigue strength and structural stability. The stamped steel cage provides accurate roller separation, while integrated NPP contact seals enhance dustproof and anti-leakage performance for harsh working environments.
Core manufacturing procedures include precision forging, high-precision CNC turning, integral vacuum heat treatment, raceway precision grinding and superfinishing. Advanced thermal processing eliminates internal stress, and ultra-smooth raceway surface effectively reduces rolling friction, improving rotational flexibility and overall mechanical stability.
Calculated per ISO 281 life standard, the standard L10 service life of INA LR50/8-NPP-U exceeds 17,000 hours under rated load and normal speed. Actual service life is mainly determined by load condition, operating temperature, lubrication quality, installation alignment and environmental contamination.
Widely used in machinery tools, automated production lines, packaging machinery, logistics conveying equipment and light engineering machinery, this INA LR50/8-NPP-U roller bearing is ideal for cam mechanisms and linear guiding units due to its thick outer ring design and outstanding radial impact resistance.
For daily maintenance, use NLGI 2 lithium base grease with 30%–40% cavity filling volume; regular relubrication is required every 450 working hours. Keep matching surfaces clean, regularly inspect operating noise, temperature and surface wear, and replace the bearing once seal aging or abnormal vibration occurs.
Before installation, clean and deburr mating surfaces strictly. Adopt standardized pressing assembly, avoid violent hammering, and control coaxiality deviation within 0.05 mm. Apply rated fastening torque and perform 30 minutes no-load trial run to check rotation smoothness, preventing premature failure caused by improper installation.
| BRAND | FONKIN/SKF/FAG/INA/NSK/NTN/TIMKEN/SNR/IKO/KOYO/ASAHI/FYH/JKL |
| BEARINGS NO. | LR50/8-NPP-U INA |
| TYPE | Cam follower |
| Inner(d)mm | 8 |
| Outer(D)mm | 24 |
| Width(B)mm | 11 |
| WEIGHT/KG | 0.03 |
| EAN CODE | 4012802 839227 |
+86-510-6831-3099
No.105, Huixin Road,Yuqi Industrial Park, Huishan District, hunqi Road, Yuqi Town, Wuxi, Jiangsu Province, P.R.CHINA
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