Headsets are inconspicuous but essential. Above all, a headset is more
complex than it appears at first glance. Our IS52 upper part with
integrated cable routing (ICR) is the result of extensive development
work, so you can install it easily and enjoy long-lasting reliability.
Specifically designed for frame types M-4910/4920 & R-4910. This
is ensured by a double-sealed angular contact bearing, which we fill
with our optimized headset grease. The two double-lip sealing washers
reliably keep the grease inside the industrial bearing while preventing
moisture and dirt from entering.

Double-sealed angular contact bearings

Centering ring made of glass fiber reinforced plastic

Metal-reinforced sealing washer