Deep groove ball bearings

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Ball Bearings
618/670 MB Deep groove ball bearings 670X820X69mm
ZQM 618/670MB Thin-Section Deep Groove Ball Bearing

Extra-Large Series (670x820x69 mm) | Machined Brass Cage

Maximize performance in limited space. The ZQM 618/670MB is a premium single-row thin-section bearing designed for heavy steel mills and large motor assemblies. Unlike standard stamped steel cages, our “MB” design features a solid machined brass cage, providing superior stability and vibration resistance under medium-to-high speeds.
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  Precision Dimensions: 670mm ID x 820mm OD x 69mm Width.
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  Heavy-Duty Cage (MB): Solid Brass Cage for enhanced durability in harsh mining & steel environments.
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  Lightweight Efficiency: Weighs only 81.9 kg, optimizing torque and reducing structural load.
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  Application Ready: Engineered for steel milling machines, industrial turntables, and large electrical motors.
⚙️ Fit & Tolerance Check: Replacing an old bearing?
Contact ZQM Engineering to confirm radial clearance (C3/C4) and fit requirements before ordering.