The INA NNTR50X130X65-2ZL is a heavy-duty double-row full complement cylindrical roller bearing, designed for high radial load and rigid support in industrial machinery. As a premium INA track roller bearing, this NNTR50X130X65-2ZL model features integrated flanges, dual contact seals (2ZL), and robust construction, making it ideal for linear guides and heavy-duty rolling systems requiring high rigidity and long service life.
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The INA NNTR50X130X65-2ZL is a heavy-duty double-row full complement cylindrical roller bearing, designed for high radial load and rigid support in industrial machinery. As a premium INA track roller bearing, this NNTR50X130X65-2ZL model features integrated flanges, dual contact seals (2ZL), and robust construction, making it ideal for linear guides and heavy-duty rolling systems requiring high rigidity and long service life.
Complying with ISO and DIN standards, its precise dimensional parameters are: bore diameter 50 mm, outer diameter 130 mm, overall width 65 mm, minimum chamfer 1.5 mm, and standard PN tolerance grade. The optimized internal structure maximizes roller density for exceptional load capacity under continuous heavy loads.
Key components are made from high-grade bearing materials. The inner/outer rings and cylindrical rollers are manufactured from 100Cr6 high-carbon chromium steel, heat-treated to HRC 60–64, providing excellent wear resistance, contact fatigue strength, and dimensional stability. The integrated steel cage ensures precise roller guidance, while the 2ZL seals offer reliable dust and moisture protection for harsh operating environments.
Core manufacturing processes include precision forging, CNC turning, controlled atmosphere quenching and tempering, raceway grinding, and roller superfinishing. Strict process control eliminates residual stress, reduces surface roughness, and enhances operational smoothness, extending the service life of the INA NNTR50X130X65-2ZL bearing.
Service life is calculated per ISO 281 standards. Under standard rated load and clean lubrication, the L10 service life exceeds 25,000 hours. Key factors affecting performance include actual load magnitude, speed, lubrication quality, installation alignment, and environmental contamination.
This heavy-duty INA NNTR50X130X65-2ZL bearing is widely used in material handling equipment, steel mills, machine tool guideways, and heavy industrial machinery. Its high radial load capacity and sealed design make it perfectly suited for heavy-load, continuous-operation scenarios requiring reliable and low-maintenance performance.
For maintenance, use NLGI 2 extreme pressure lithium grease with 35%–45% cavity filling volume. Perform relubrication every 600 operating hours. Keep mounting surfaces clean, regularly inspect temperature, vibration, and noise, and replace the bearing if seal wear or abnormal noise occurs.
During installation, clean shafts and housings thoroughly. Use press or thermal assembly methods, avoiding direct hammer blows. Control coaxiality within 0.05 mm, apply standard fastening torque, and conduct a 30-minute no-load test run to verify smooth rotation, preventing premature failure due to improper assembly.
| BRAND | FONKIN/SKF/FAG/INA/NSK/NTN/TIMKEN/SNR/IKO/KOYO/ASAHI/FYH/JKL |
| BEARINGS NO. | NNTR50X130X65-2ZL INA |
| TYPE | Support Roller |
| Inner(d)mm | 50 |
| Outer(D)mm | 130 |
| Width(B)mm | 65 |
| WEIGHT/KG | 5.12 |
| EAN CODE | 4012802 416374 |
+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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