NSK 6918 ZZ deep groove ball bearing

NSK 6918 ZZ is a reference of deep groove ball bearing, within Bearings. Request a quote for 6918 ZZ via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

The NSK deep groove ball bearing with the ZZ suffix is a single row bearing with metal shields on both sides. It is used in applications where lubrication must be retained and dust or particles kept out, at moderate speeds and with combined radial and axial loads. MR Accesorios Industriales sells this NSK line in Buenos Aires, Argentina, and advises you on choosing the correct part number for your equipment.

The designation of these bearings combines a series number and the ZZ suffix. In the examples, the part numbers show that the series defines the section and load capacity, while the number after the slash indicates the bore diameter in millimeters. The ZZ suffix indicates that the bearing has two metal shields (steel plates) fitted on both sides. These shields protect against dust and dirt, but they are not sealed against liquids.

This type of bearing is found in electric motors, pumps, fans, gearboxes, machine tools and power transmission equipment in general. In Argentine industry, it is common in production lines, refrigeration equipment, compressors and agricultural machinery. Its robust construction and its ability to support loads in both directions make it versatile for many applications.

To select the right bearing, take into account the shaft diameter, the radial and axial loads, and the rotation speed. The ZZ shield is suitable for dusty environments, but if there is contact with water or vapors, other seals should be evaluated. Mounting must be done with suitable tools, without striking the shields, and verifying the alignment of the shaft and the housing. Lubrication comes from the factory and requires no additional maintenance under normal conditions.

If you need to replace a bearing from another brand, the equivalence part number is based on the main dimensions: bore, outer diameter and width. NSK bearings with the ZZ suffix are interchangeable with those from other brands that share those dimensions and the same type of shield. It is always advisable to verify the exact part number and the operating conditions before replacing.

To request a quote for the bearing you need, write to us on WhatsApp with the complete part number or the dimensions of your part. At MR Accesorios Industriales we give you a quote promptly and tell you the compatible alternative if needed.