QJ 309 MA

Engineered for compact power transmission setups requiring substantial axial load capacity in both directions, the QJ 309 MA four-point contact ball bearing utilizes a split inner ring design that accommodates a maximum ball complement within a standard 45 mm bore and 100 mm outer diameter footprint. Operating with a 35° contact angle, the QJ 309 MA features a solid machined brass cage guided by the outer ring, delivering exceptional resistance to centrifugal forces, thermal stress, and high rotational speeds typical of heavy-duty industrial gearboxes and compressors. By replacing two conventional angular contact bearings with a single unit, the QJ 309 MA simplifies shaft layout while maintaining precise axial location and high running accuracy under harsh operating conditions.

We provide sea and air freight services for large bearings, and international express shipping services for small bearings.

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