Rotastar screening bucket
The Rotastar™ is a unique, high-output screening bucket that combines market-leading features.
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11 models -
weights: from 255 to 2,015 kg -
excavator weights: from 2.2 to 30 ton
Material is constantly rotated, without any chopping or pinching, making screening of damp, fragile and special materials possible. Suitable for top soil, waste, turf, roots, gypsum, knotweed and many other applications.
The Rotastar™ bucket has a unique screening action. It rotates the material in a similar manner to a trommel screen, but has the benefit of rotating star discs, agitating and clawing at the material as it turns. This is achieved by mounting star shafts on a large arc, forming the back and top of the bucket.
Screening applications: compost, top soil, sand, stone, fertiliser, gypsum, mixed waste, gully waste, street waste, fine screening, cable padding, knotweed.
Technical specifications. E = excavator, L = loader. Hydraulic pressure 70-180 bar on all models.
| Model | Carrier | Carrier weight (t) | Output, average (t/h) | Shafts | Bucket capacity (m³) | Oil flow (l/min) | Bucket weight (kg) | Working width (mm) | Overall width (mm) |
|---|---|---|---|---|---|---|---|---|---|
| RS 2-4 | E+L | 2.2-4 | 15 | 3 | 0.14 | 40 | 255 | 640 | 910 |
| RS 3-5 | E+L | 3-5 | 25 | 3 | 0.19 | 45 | 280 | 825 | 1,070 |
| RS 4-6 | E+L | 4-6 | 35 | 3 | 0.24 | 50 | 345 | 1,056 | 1,300 |
| RS 4-9 | E+L | 4-9 | 45 | 4 | 0.36 | 55 | 455 | 1,056 | 1,300 |
| RS 8-14 | E+L | 8-14 | 60 | 5 | 0.48 | 64 | 635 | 1,150 | 1,402 |
| RS 9-13 | E+L | 9-13 | 45 | 3 | 0.44 | 55 | 660 | 1,520 | 1,825 |
| RS 10-14 | E+L | 10-14 | 60 | 4 | 0.54 | 64 | 821 | 1,380 | 1,670 |
| RS 10-20 | E+L | 10-20 | 75 | 5 | 0.6 | 70 | 1,000-1,060 | 1,260 | 1,560 |
| RS 13-20 | E+L | 13-20 | 95 | 6 | 1.0 | 100 | 1,130-1,250 | 1,260 | 1,660 |
| RS 20-30 | E | 20-30 | 110 | 8 | 1.3 | 140 | 1,700 | 1,260 | 1,660 |
| RS 25-30 | E+L | 25-30 | 110 | 6 | 1.3 | 140 | 2,015 | 1,640 | 1,700 |
- Stars: lightweight, hard-wearing, flexible, self-cleaning polyurethane stars. This means no pinch or crushing areas, resulting in low power requirement and no contamination from crushed material.
- Speed: variable speed control is fitted as standard up to the RS10-20, so it is possible to adjust fragment size by changing shaft speed.
- Fraction size reduction: with different star and collar options it is possible to reduce fine fraction size from the standard 20mm to 15, 10 and 8mm.
- Spacers: to create a larger fraction size, spacers can be fitted between each star. Bark and compost are two popular applications for spacers.
- Transmission: heavy duty chain drive powered by hydraulics is rugged and reliable.
- Area: due to the light weight of the polyurethane stars, it has been possible to create a massive screening area when compared to bucket weight.
- Arc: the bucket is screening throughout its cycle, with no time wasted in stopping and reversing the shafts.
- Quiet: the polyurethane stars ensure quiet running when compared to static and steel disc machines.
- Maintenance: the complete design of the Rotastar™ allows for easy shaft removal. The polyurethane stars are an inexpensive, easily replaceable part. Bearings are sited away from contamination and easy to grease.
- Shafts: the shafts operate in one direction only and require a standard one-way hammer circuit. This also eliminates the need for a drain line.
- Loader: loader bracket options from the RS2-4 to RS 13-20. The RS 25-30 and RSLS 12-20 include loader brackets as standard.
