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4pcs Needle roller bearings with inner ring 8 9 12 15 17 20 25 30 35 40 45 50 55High-concerned chemical : None Good heat tolerance, high load carrying capacity and stiffness Low cross section, enable downsizing and suit for use in restricted mounting spaces Pre-Lubricated. Good running properties Exquisite in workmanship: needle roller bearing has a uniform hardness, low friction and low noise, which can speed up work and production efficiency Wide applications: the bearing steel is suitable for restricted mounting spaces, widely apply on machinery, machine tool, pumps, gearing, spin mop bucket and so on Brand Name IMSZRJYBGD Part Number ROSKWAKWB-NKIS45(45X72X22 Manufacturer IMSZRJYBGD