Maytronics Dolphin Ex 45 CB orange diagonal combined brush assembly - 46662R0028

Maytronics Dolphin Ex 45 CB orange diagonal combined brush assembly

This is the genuine Maytronics orange diagonal combined brush assembly (CEP. CB NARANJA DIAG) designed specifically for the Dolphin Ex 45 CB robotic pool cleaner. The assembly integrates a PVC brush roller set at a diagonal angle into a complete, ready-to-fit combined brush unit, delivering active scrubbing across pool floors, walls and the waterline in a single pass.

How the diagonal combined brush works

The diagonal bristle orientation is a deliberate engineering choice: as the brush roller rotates, the angled PVC bristles generate a lateral sweeping motion that loosens compacted algae, biofilm and embedded grit far more effectively than a straight-set brush. The combined brush (C.B) format means the brush, its end caps and axle bearings are supplied as one pre-assembled cylinder, requiring no bench assembly before fitment.

Compatibility with the Dolphin Ex 45 CB

This assembly is the OEM-specified replacement for the Dolphin Ex 45 CB model. The Ex 45 CB is a mid-range, cable-guided robotic cleaner built around the Maytronics diagonal-drive architecture; fitting the correct combined brush assembly is essential to ensure the drive gearing meshes correctly and the brush bay closes flush. Do not substitute with a dynamic-drive (DYN) or straight-brush assembly — the C.B format and orange colour code identify a specific brush type and stiffness grade.

Signs that the brush assembly needs replacing

Replace this assembly when you observe: bristles worn down to within a few millimetres of the core, visible cracks or warping on the end caps, the brush roller spinning freely without engaging the drive gear, or a noticeable drop in wall-climbing performance and debris pick-up despite clean filters and a clear impeller. Worn bristles are the single most common cause of reduced cleaning coverage in pool robots of this class.

Why genuine Maytronics parts matter

Genuine Maytronics combined brush assemblies are manufactured to the exact tolerances of the Dolphin drive system. The orange colour coding identifies the precise bristle durometer and diagonal pitch specified by Maytronics engineering for the Ex 45 CB chassis. Aftermarket alternatives often use softer PVC compounds that degrade faster in chlorinated water or stiffer compounds that overload the brush motor, shortening its service life. Using a genuine part also preserves any remaining warranty coverage on the robot.