Joint GN 648.1-18-M18x1,5-W Z026889

Ball joints with internal thread – robustness and precision in every detail

The GN 648.1 ball joint is a connecting element used in many industries, from machinery and equipment to furniture construction. It is characterized by high strength and precision, guaranteeing reliable operation even in demanding conditions. Made of galvanized steel, passivated blue, it provides corrosion resistance and long-term operation. Two versions are available – N (brass/steel, lubricatable) and W (steel-PTFE/steel, self-lubricating), allowing you to adapt the joint to specific application needs.

Design and materials – the key to durability

The joint body is made of galvanized steel, providing protection against environmental influences. Depending on the version, the bearing pair can be made of brass (type N) or steel with a PTFE insert (type W). Brass provides good cooperation with lubrication, while PTFE is characterized by a low coefficient of friction and self-lubricating properties – this is an ideal solution where regular lubrication is difficult or impossible. The inner ring in both types is made of hardened, ground and polished 100Cr6 steel, guaranteeing high load capacity and durability.

Applications and compatibility

GN 648.1 ball joints are compatible with DIN ISO 12240-4 series K (formerly DIN 648 K). They are widely used as swivel joint elements in machines and equipment, in height adjustment systems, and in furniture structures requiring rotation or inclination. Thanks to the variety of available thread sizes (including M18x1.5) and two versions, they can be adapted to most standard applications. It is worth paying attention to versions with a fine metric thread (e.g. M10x1.25 or M18x1.5), which provide greater precision and connection stability. The choice between type N and W depends on the specifics of the application – if regular lubrication is required, type N is a better choice; if the application requires maintenance-free operation, it is worth choosing the self-lubricating version W.