The EPK 8220Л is a single-direction thrust ball bearing manufactured by EPK Saratov OJSC in accordance with GOST 520. Classified under the Type 8000 family, it is designed to carry axial loads acting in one direction only, comprising three precision components: a shaft washer (tight ring), a housing washer (free ring), and a pressed or solid cage retaining the ball complement.
The bearing measures 100 mm bore × 150 mm outer diameter × 38 mm height with a shaft washer inner bore D1 of 100.2 mm and a corner radius of 1.1 mm minimum. It delivers a dynamic axial load rating of 124,000 N and a static rating of 320,000 N, with a limiting speed of 1,300 rpm under grease lubrication and 1,800 rpm with oil, and a mass of 2.490 kg.
Its direct international equivalent is 51220M.
EPK Saratov OJSC is a production subsidiary of EPK Corporation — Russia's largest bearing manufacturer — employing 8,500 people and offering more than 9,800 bearing modifications in outer diameters from 20 to 2,200 mm. The Saratov plant holds ISO 9001, GOST R ISO 9001-2015, and ISO 14001:2015 certifications and EPK products are annually included in Russia's "100 Best Products" list.
The 8220Л is applied in aviation, automotive, and railway drivetrains, as well as in machine-tool spindles, industrial gearboxes, jacks, and rotary devices.
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