RF44100 - Series 45

Core Blocks are a true all round solution. A tuned 2-stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads. Acetal sheave, alloy cheeks and stainless fixings complete the durable package. For reliability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing.
Universal Bearing -
Dynamic and high static load performance
The Ronstan Universal Bearing incorporates our proven 2-stage bearing system
Stage 1 - Under moderate loads, Acetal ball bearings ensure minimum friction.
Stage 2 - Under heavy loads, where deformation of ball bearings alone would result in increased friction, a sliding Acetal bearing on a polished stainless steel race takes over, maintaining low friction performance.
Additionally the ball bearings are configured to act as a thrust bearing between the sheave and cheeks, preventing the sheave from rubbing on the cheeks and causing friction when the line lead in and out of the block isn’t perfect. Particularly important for cheek blocks.
Alloy cheek plates
Block cheeks are manufactured from the highest quality alloy for maximum strength. Material optimisation and the cut-away design minimises weight and allows easy fresh water rinsing of salt and debris from the bearings. Cheek design has been further styled with flaring at the block throat and reduced gap between the cheek and sheave, minimising rope wear.

As your needs change - a child wants a new bed, or maybe a sibling arrives - the bed can keep up with the new needs.

Choose the bed you want to convert and see the conversion options in the bed converter.

We guarantee a five-year availability of the standard conversion kits for all convertible beds from the date of purchase.

Tested and approved according to safety standard EN 747-1:2012+A1:2015.

According to EN 747 loft beds and the upper bed of bunk beds are not suitable for children under 6 years due to the risk of injury from falls.

A smaller child can sleep in the lower bed of bunk beds, possibly with a bed guard for extra safety.