YK Series Β· Screening Equipment

YK Circular Vibrating Screen
High-Capacity Classification for Aggregate & Mining

Designed for high-capacity classification of quarry aggregate, mining ore, and construction waste, the SUNREX YK Series circular vibrating screen uses a dedicated vibrator motor with high amplitude and adjustable frequency to deliver consistent, efficient screening across 23 models spanning 2 to 4 decks and capacities from 10 to 800 t/h.

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SUNREX YK circular vibrating screen
23
Models
1200–7500
mm Screen Width
10–800
t/h Capacity
2–4
Decks
Equipment Details

How the YK Circular Vibrating Screen Works

Screening Principle

Dedicated Vibrator Motor β€” High Amplitude, Adjustable Frequency

The YK Series uses a dedicated vibrator motor mounted on the screen frame. When the motor rotates, it generates a circular exciting force that causes the screen box to vibrate in a uniform elliptical motion. This vibration throws material upward and forward at a controlled angle, allowing undersize particles to pass through the screen apertures while oversize material travels along the deck and discharges at the end. The dedicated vibrator design eliminates the need for shafts, universal joints, and complex drivetrains β€” reducing mechanical failure points, simplifying maintenance, and enabling quick amplitude adjustment by changing the motor's eccentric weight configuration.

SUNREX YK vibrating screen structure
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Dedicated Vibrator Motor

Direct-drive vibrator motor eliminates shafts and universal joints, reducing mechanical failure points and simplifying maintenance compared to traditional shaft-driven screens.

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Adjustable Amplitude & Frequency

Eccentric weight configuration on the vibrator allows quick amplitude adjustment to match material characteristics β€” higher amplitude for coarse feed, lower for fine or sticky material.

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Circular Throw Motion

Uniform elliptical throw throws material forward at the optimal screening angle, maximising the probability of particles passing through apertures on the first contact β€” key for high-capacity classification.

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Polyurethane / Rubber Screen Cloths

Replaceable modular screen panels in polyurethane or rubber resist abrasion and moisture, reduce blinding on wet feed, and can be swapped without tools for faster changeovers.

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Quarry Aggregate Classification

Separates crushed stone into multiple finished product fractions β€” 5–10 mm, 10–20 mm, 20–31.5 mm, and oversize β€” in a single screening pass to meet standard gradation specifications.

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Mining Ore Grading

Grades run-of-mine or crushed ore into size fractions for gravity concentration, flotation feed preparation, or stockpiling β€” ensuring consistent feed quality for downstream processing circuits.

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Construction Waste Screening

Screens crushed demolition rubble to separate reusable granular material from oversize concrete and masonry prior to washing, magnetic separation, and air classification stages.

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Closed-Circuit Crushing Support

Positioned after primary or secondary crushers to scalp off finished product and return oversize to the crusher β€” the essential classification step for producing clean, saleable aggregate fractions.

Applications

Versatile Screening Across Quarry, Mining, and Recycling Operations

The YK Series is the standard classification screen for aggregate production lines β€” separating crushed stone into multiple finished product fractions in a single pass. In mining, it grades ore into size fractions for gravity separation, flotation feed preparation, or stockpiling by grade. In construction and demolition waste recycling, it separates oversize rubble from reusable granular material prior to washing and density separation. The YK screen handles feed sizes up to 200 mm and operates reliably on dry or pre-dewatered material across all these applications.

SUNREX YK vibrating screen internal structure
Model Range

YK Series β€” Full Specifications

23 models from compact 2YK1237 to large-format 3YK3675. 2-deck, 3-deck, and 4-deck configurations. All models use a dedicated vibrator motor with adjustable amplitude and frequency.

Model Screen Size (mm) Decks Aperture (mm) Max Feed (mm) Capacity (t/h) Power (kW) Frequency (rpm) Amplitude (mm)
2YK12373700Γ—120023–8010010–8011750–9506–9
3YK12373700Γ—120033–8010010–8011750–9506–9
2YK15484800Γ—150023–8010030–20015750–9506–9
3YK15484800Γ—150033–8010030–20015750–9506–9
4YK15484800Γ—150043–8010030–20015750–9506–9
2YK18484800Γ—180023–8020050–25022750–9506–9
3YK18484800Γ—180033–8020050–25022750–9506–9
2YK18606000Γ—180023–8020060–30030750–9506–9
3YK18606000Γ—180033–8020060–30030750–9506–9
4YK18606000Γ—180043–8020060–30030750–9506–9
2YK21606000Γ—210023–8020080–40030650–8506–9
3YK21606000Γ—210033–8020080–40037650–8506–9
4YK21606000Γ—210043–8020080–40037650–8506–9
2YK24606000Γ—240023–80200100–50037750–9506–9
3YK24606000Γ—240033–80200100–50037750–9506–9
4YK24606000Γ—240043–80200100–50037750–9506–9
2YK28707000Γ—280023–80200100–7002Γ—30650–8506–9
3YK28707000Γ—280033–80200100–7002Γ—37650–8506–9
4YK28707000Γ—280043–80200100–7002Γ—37650–8506–9
2YK30757500Γ—300023–80200150–8002Γ—30650–8506–9
3YK30757500Γ—300033–80200150–8002Γ—37650–8506–9
2YK36757500Γ—360023–80200150–8002Γ—30650–8506–9
3YK36757500Γ—360033–80200150–8002Γ—37650–8506–9
Applications

Where YK Vibrating Screens Deliver Results

The YK Series is deployed across quarry, mining, and recycling operations to classify material into finished product fractions, support closed-circuit crushing, and prepare feed for downstream separation processes.

Aggregate classification on YK vibrating screen
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Aggregate Classification
Separates crushed stone into 2 to 4 finished product fractions in a single screening pass β€” from quarry run-of-mine to market-ready 5–10 mm, 10–20 mm, 20–31.5 mm, and oversize fractions meeting standard gradation specifications for concrete, asphalt, and road base.
Quarry / Concrete / Asphalt
Mining ore screening on YK vibrating screen
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Mining Ore Screening
Grades crushed ore into size fractions ahead of gravity separation, flotation, or magnetic concentration circuits. Consistent top-size control improves separation efficiency in downstream equipment and ensures stockpiles meet grade specifications for blended feed or direct sale.
Mining / Ore / Concentration
Construction waste recycling screening
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Construction Waste Recycling
Screens crushed demolition rubble to separate reusable 0–40 mm granular material from oversize concrete and masonry prior to washing, eddy current separation, and air classification. Supports high-throughput C&D waste processing lines with consistent classification performance.
C&D Waste / Recycling / Urban Mining
FAQ

Common Questions About YK Circular Vibrating Screens

What is the difference between 2-deck, 3-deck, and 4-deck vibrating screens?
The number of decks determines how many size fractions the screen can produce in a single pass. A 2-deck screen separates material into three products (oversize, middle size, undersize). A 3-deck screen produces four products, and a 4-deck screen produces five products. More decks mean higher classification efficiency and fewer downstream handling stages, but each additional deck reduces the available screen area per deck and may require higher feed rates to maintain blinding-free operation. For most aggregate production lines, a 2- or 3-deck screen is sufficient β€” 4-deck screens are used in large-capacity operations where multiple finished products are required simultaneously.
How do I select the right screen aperture (mesh size) for my application?
Screen aperture should be chosen based on the target finished product size, not the feed size. For example, if your finished product spec requires 10–20 mm aggregate, use a 20 mm aperture on the top deck to scalp off oversize, then a 10 mm aperture on the second deck to produce your target fraction. The rule of thumb is aperture = 1.2–1.5 Γ— target finished size to account for particle shape and to prevent pegging/blinding. Consult the material's bulk density and moisture content β€” wet or clay-rich feed requires larger apertures or pre-screening. For mining applications, the aperture should match the required liberation size for downstream gravity or flotation separation.
What maintenance is required for YK circular vibrating screens?
Regular maintenance includes: daily visual inspection of screen cloth tension and wear; weekly lubrication of the vibrator bearings per the grease schedule; monthly inspection of screen frame bolts, springs, and drive belt tension; and periodic replacement of screen cloth, vibrator bearings, and springs based on operating hours. The dedicated vibrator motor uses sealed-for-life bearings, reducing maintenance compared to shaft-driven designs. Keep feed rate within rated capacity to prevent overloading and premature spring or bearing failure. Check the screen's stroke (amplitude) regularly β€” a decrease in amplitude indicates worn vibrator components or loose fasteners.
Can a YK screen handle wet or sticky material without blinding?
Circular vibrating screens are effective for dry screening but can experience blinding on wet or clay-rich material. Strategies to improve wet screening performance include: installing anti-blinding polyurethane panels or ball/decker devices on the screen deck to keep apertures open; increasing the screen's throw angle and vibration amplitude to accelerate material flow and shed water; reducing feed rate to allow more time for water to drain through apertures; and pre-screening with a grizzly feeder to remove fine clay before the screen deck. For highly wet or sticky materials, consider a dewatering screen or washing screen instead.
Next Steps

Build Your Complete Screening Line

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Jaw Crusher

Primary crushing of quarry rock before the screen β€” the standard first stage in aggregate production.
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Cone Crusher

Secondary and tertiary crushing for producing the feed size fractions that the YK screen then classifies.
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Impact Crusher

An alternative secondary crusher option, particularly suited for limestone and softer aggregate materials.
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Belt Conveyor

Transport classified aggregate fractions to stockpiles, bins, or washing equipment across your processing line.

Ready to Size Your YK Vibrating Screen?

Provide your feed material type, target output fractions, and required hourly capacity β€” our team will recommend the right model and screen configuration.

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