What is the maximum production capacity of the CRF series, and which models achieve it?

The CRF series circular vibrating screens achieve a maximum production capacity of 1300 tph with the CRF3061-2 and CRF3073-2 models. These larger models have screening areas of 18.3 m² and 21.9 m², respectively, and are equipped with dual 2×30 kW drives. The smaller models—CRF2448-2, CRF2461-2, and CRF2473-2—have a capacity of 1000 tph. Capacity depends on feed material characteristics, such as bulk density, moisture content, and particle size distribution, as well as the selected inclination angle and screen media. For precise capacity estimates, consult Cruston's screening experts with your specific application data.

How does the non-welded crossbeam design benefit maintenance and equipment life?

Non-welded crossbeams eliminate welded joints, which are common failure points due to fatigue stress under cyclic loading. In the CRF series, the crossbeams are bolted or otherwise mechanically fastened, allowing individual replacement without cutting or welding. This reduces maintenance time and cost, and avoids the risk of weld-induced stress concentrations that can lead to cracking. The design also improves structural integrity, extending the lifespan of the screen frame. For operations running at 750–900 rpm continuously, this translates to fewer unplanned shutdowns and lower total cost of ownership. Cruston recommends regular inspection of crossbeam fasteners as part of a preventive maintenance schedule.

Can the CRF series handle sticky or high-moisture ores, and how?

Yes, the CRF series is specifically designed to handle difficult-to-screen ores, including sticky and high-moisture materials. The circular vibration motion keeps the material bed continuously moving and tumbling, which prevents particles from sticking to the screen media or blocking apertures. This is in contrast to linear motion screens, which can suffer from material buildup when feed moisture is high. The adjustable inclination angle further helps by allowing operators to optimize material travel speed and bed depth. For extremely sticky ores, Cruston can recommend specialized screen media and assist with angle adjustment to maintain throughput and screening efficiency.

What support and services are available for CRF series screens?

Cruston provides expert configuration and adjustment support for CRF series circular vibrating screens through its global network. This includes assistance with selecting the right model, inclination angle, screen media, and drive configuration for your specific application. A worldwide service network supplies spare parts, wear parts, and maintenance services to minimize downtime. Cruston's screening experts can also provide on-site troubleshooting and optimization. For customers in remote locations, the company offers logistics support to ensure critical parts are delivered quickly. Regular maintenance training and documentation are available to help operators maximize equipment life and performance.

CRF Series Circular Vibrating Screen

CRF Series: 2-Deck Circular Vibrating Screen with 11.5–21.9 m² Screening Area and 750–900 rpm Speed

The Cruston CRF series circular vibrating screen is a heavy-duty, two-deck screening solution engineered for reliable coarse, inspection, and finished product classification. Available in five models with screening areas from 11.5 m² to 21.9 m², it handles production capacities up to 1300 tph.

Screening Area

11.5 m² to 21.9 m²

Number of Decks

Rotational Speed

750-900 rpm

Production Capacity

1000 tph to 1300 tph

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How Does the CRF Series Circular Vibrating Screen Handle Difficult Ores?

The Cruston CRF series circular vibrating screen is a two-deck, circular-motion screening machine designed for coarse, inspection, and finished product screening in mineral processing. It is available in five models: CRF2448-2, CRF2461-2, CRF2473-2, CRF3061-2, and CRF3073-2. Screening areas range from 11.5 m² to 21.9 m², with widths from 2.4 m to 3.0 m and lengths from 4.8 m to 7.3 m. Power options include single 30 kW or dual 2×30 kW drives, and operating speeds are 750–900 rpm. Production capacities reach 1000 tph for smaller models and 1300 tph for larger units. Equipment weights vary from 13,750 kg to 23,800 kg, reflecting robust construction for continuous duty.

The CRF series excels in processing difficult-to-screen ores across metallic and non-metallic mining operations. Typical applications include copper, gold, iron ore, silver, lead, nickel, zinc, molybdenum, bauxite, alumina, and clay. The circular vibration motion keeps material moving continuously, preventing blockage and sticking that often plague linear screens in sticky or high-moisture feeds. This makes the CRF series ideal for quarries, gravel pits, mines, and crushing and screening contracting businesses where uptime and throughput are critical. The screens can be configured with different inclination angles to match specific site requirements, ensuring efficient separation even with challenging material characteristics.

Compared to other screening technologies, the CRF series offers distinct advantages. Non-welded crossbeams reduce fatigue stress risks and extend equipment lifespan, while high utilization of wear parts and spare parts minimizes costly maintenance downtime. The design focuses on achieving the lowest total operating cost. For operations requiring higher capacity, the CRF3061-2 and CRF3073-2 models deliver 1300 tph, whereas the CRF2448-2, CRF2461-2, and CRF2473-2 provide 1000 tph. The dual-drive configuration on larger models ensures reliable power delivery and balanced motion. Expert support from Cruston's screening specialists helps optimize configuration and adjustment for each application.

Non-welded crossbeams reduce fatigue stress and extend service life in high-cycle operations.
Circular motion prevents material blockage and sticking, increasing uptime for difficult ores.
Adjustable inclination angles suit various applications, from quarries to contract crushing.
Global service network provides spare parts, wear parts, and maintenance support.

Technical Specifications

Serial Number	Equipment Model	Width × Length (m)	Screening Area (m²)	Number of Floors	Power (kW)	Weight (kg)	Rotational Speed (rpm)	Production Capacity (tph)*
1	C RF2448-2	2.4 × 4.8	11.5	2	30	13,750	750-900	1000
2	CRF2461-2	2.4×6.1	14.6	2	2x30	17,500	750-900	1000
3	CRF2473-2	2.4×7.3	17.5	2	2x30	19,300	750-900	1000
4	CRF3061-2	3.0×6.1	18.3	2	2x30	21,350	750-900	1300
5	C RF3073-2	3.0×7.3	21.9	2	2x30	23,800	750-900	1300

Core Technical Features and Quantified Advantages

STEP 1

Non-Welded Crossbeams Reduce Fatigue Stress

The CRF series uses non-welded crossbeams, which eliminate weld-induced stress concentrations that can lead to premature cracking under cyclic loading. In high-cycle screening operations running at 750–900 rpm, welded joints are often the first failure point. By avoiding welds, the crossbeams distribute dynamic loads more evenly, reducing fatigue stress risks and extending equipment lifespan. This design also simplifies maintenance because crossbeams can be replaced without welding, minimizing downtime. The result is a more durable screen frame that withstands continuous operation in abrasive and high-impact environments, such as primary crushing circuits and heavy-duty ore screening.

STEP 2

Circular Motion Prevents Blockage and Sticking

The circular vibration motion in the CRF series keeps material continuously moving along the screen deck, which prevents blockage and sticking that commonly occur with sticky, wet, or high-clay ores. Unlike linear screens that rely on a steep angle to convey material, circular motion provides a tumbling action that helps dislodge near-size particles. This increases uptime and reduces the need for manual cleaning. The motion is generated by a single or dual shaft mechanism, depending on the model, with speeds of 750–900 rpm. For difficult-to-screen ores such as bauxite, alumina, and clay, this motion is particularly effective, ensuring consistent throughput and screening efficiency.

STEP 3

Adjustable Inclination Angles for Versatile Applications

The CRF series circular vibrating screens can be configured with different inclination angles to suit a wide range of applications, including quarries, gravel pits, mines, and crushing and screening contracting businesses. Inclination angle affects material travel speed and bed depth, which in turn influence screening efficiency and capacity. A steeper angle increases throughput but may reduce accuracy, while a shallower angle improves separation at the cost of capacity. The ability to adjust the angle allows operators to optimize the screen for specific feed characteristics and product requirements. This flexibility makes the CRF series adaptable to changing production needs without requiring a new machine.

STEP 4

High Wear Part Utilization and Low Operating Cost

The CRF series is designed to achieve the lowest total operating cost by maximizing the utilization of wear parts and spare parts. The screen media, side liners, and crossbeam protection are engineered to last longer and be replaced quickly, reducing maintenance downtime. For example, the non-welded crossbeam design allows individual replacement without cutting or welding, which saves labor and extends frame life. Additionally, the high-capacity models (CRF3061-2 and CRF3073-2) deliver up to 1300 tph, reducing the number of machines required for a given throughput. Combined with expert support and a global spare parts network, this focus on wear part utilization ensures predictable maintenance costs and high availability.