K4® bushings are self-lubricating precision bushings, made from an exclusive engineering polymer and machined using CNC equipment.
Being the result of over ten years of research and development, these bushings stand out for their strict manufacturing and quality control standards, achieved through innovative and proprietary processes.
K4® is the trademark that identifies these bushings, which are produced and distributed globally.

K4® bushings are ideal for angular or linear movements in applications where materials like bronze, aluminum bronze,
bi-metallic, or layered materials are traditionally used.

They are particularly suited for high-load, low-speed operations, such as joints in earth-moving machinery, anchor connections and hydraulic cylinder rod guides, axles and various other industrial applications. 
Additionally, they offer an optimal solution for applications where reducing or eliminating periodic lubrication is necessary.

K4® bushings offer several advantages that make them a reliable and versatile choice for various applications. They are highly resistant to oxidation, ensuring durability even in demanding environments. Their electrical insulation properties make them suitable for applications where conductivity needs to be minimized.
Additionally, K4® bushings are non-toxic and self-extinguishing, adding an extra level of safety. One of their greatest strengths is the complete freedom in sizing, allowing for flexible design solutions without dimensional constraints.
Another key benefit is the ease of installation and maintenance - no special tools are required, making them a practical and efficient choice for many industries