A wheel unit, on which the wheels of a trailer are mounted, is an essential part of each axle. Wherever the loading allows it, uses KNOTT maintenance-free, compact double-row ball bearings, that assure long lifetime and good stability of wheel units even in tough operating conditions of a trailer.
In the case of braked axles, the most significant component of trailer wheel units are drum brakes. Being a key safety element, high demands are laid on brakes. Wheel brakes are liable to homologation for the use in road traffic. KNOTT brakes offer a quality proved by decades with a reliable auto-reverse function (allowing to reverse a trailer despite being equipped with an overrun brake), in combination with innovative technologies like the ANS – automatic brake-shoe clearance adjustment.
For an increased corrosion resistance and hence a longer life, we also offer wheel units with improved bearing seal or an integrated system for rinsing out salt water from the brake drum, used mainly in boat trailers.