The 42000 series bearings are suitable for all types of hull material. This type of top bearing can also be used on tiller steered boats. The rudder head will rest on the delrin ring, achieving on this way the vertical locking. In yachts with a steering system a locking ring on top of the bearing will take care of the vertical locking. A special type of the 42000 series bearing (42…STP) with integral stops in combination with our tiller heads is available in 35 and 40 mm. The disadvantage of this bearing is the fact that the top of the rudder stock and locking ring stand out above deck. If this is not acceptable, one should choose the bearing type 42000Z.