293/530 EM

The 293/530 EM spherical roller thrust bearing, tunnel boring machines, and hydroelectric turbine shafts, where shaft deflection or housing misalignment (up to 2.5°) demands self-aligning capability. The bearing's asymmetrical rollers, forged from vacuum-degassed 100Cr6 steel and hardened to 60-64 HRC, reduce edge stress concentrations while the machined brass cage (EM suffix) ensures stability in high-vibration environments like cement kilns or crushers. Raceways undergo superfinishing (Ra ≤0.2 μm) to minimize friction and heat generation, supporting continuous use at temperatures from -30°C to +150°C. A triple-labyrinth seal with nitrile rubber lips blocks ingress of abrasive particles and moisture, paired with ISO VG 320 lithium-complex grease for 10,000-hour relubrication intervals. Compliant with DIN 728 and ISO 199:2014 standards, this bearing suits coal pulverizers, offshore crane slew rings, and steel rolling mills requiring ABMA Class 4 precision. Optional induction-hardened steel washers (HRC 58-62) enhance durability in corrosive atmospheres, while pre-mounted alignment sleeves simplify installation in multi-bearing configurations.

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