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Catalog excerpts
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The BSTU bearings are filled with special long-life polyureabased grease (L588). This grease is very effective in reducing standstill wear and fretting corrosion of the bearing. Ball/plate tests proved the wearreducing properties of the grease. 5. Seal A spindle ball bearing is constantly subjected to cooling liquids and metal shavings. After the test, no contamination was detected on the inside of the BSTU bearing. Test conditions: Bearing designation: BSTU3080LLX/GNP4U/L588 Rotational speed: up to 2,200 min-1 Lubricant: Special grease L588 Dirt particles: Diameter: 5 to 75 µm Components: SiO2, Fe2O3, Al2O3 and others Color of dirt particles: Brown Test duration: 1 hour Temperature increase at the bearing inner race [℃] Temperature increase at the bearing inner race [℃] Axial rigidity BALL SCREW SUPPORT beARING UNIT Lithium soap grease NTN special grease L588 Ball Plate Oscillation Lithium soap grease Plate Oscillation Rotational speed [min-1] Lithium soap grease NTN special grease L588 Conception et réalisation : Service publicité NTN-SNR / Com&Cie © 2015 / 09 - Photos: © Pedro Studio Photos - Shutterstock Test conditions: Bearing designation: BSTU3080LLX/GNP4U/L588 Axial thrust load: up to 20 kN Wear ratio maximum number of large-diameter balls. Wear ratio BSTU bearings offer a very high rigidity, thanks to the use of a Test conditions: Bearing designation: BSTU3080LLX/GNP4U/L588 Lubricant: Special grease L588 Axial load [kN] Temperature increase The LX seal has only a minimal influence on the breakout torque Temperature increase Wear ratio at the bearing inner race [℃] Test conditions: Bearing designation: BSTU3080LLX/GNP4U/L588 Rotational speed: up to 5,000 min-1 Lubricant: Special grease L588 The newly developed LX seal reduces the generation of heat. Temperature increase at the bearing inner race [℃] 1. Temperature/rotational speed curve Axial deviat Test specifications NTN-SNR ROULEMENTS - 1 rue des usines - 74000 Annecy RCS ANNECY B 325 821 072 - Code APE 2815Z - Code NACE 28.15 www.ntn-snr.com BALL SCREW SUPPORT BEARING UNIT B
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BSTU designation The BSTU series produced by NTN are characterized by the highest basic load rating, which ensures a long service life. In this way, NTN contributes to the protection of the environment. In addition, BSTU bearings are very simple to install. • Long service life and rigidity • Low temperature development • High precision • Low frictional torque Technical characteristics 1. HiGHEST BASIC LOAD RATING BSTU bearings by NTN feature the highest basic load rating available. NTN achieved this by optimising the inner bearing geometry. in addition to a larger ball diameter, BsTU...
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