Dry powders and granules rarely arrive at the next process step in one clean size range. Salt needs to lose the fines, plastic pellets need to lose the dust, abrasive grains need a tight distribution, and every plant that handles these materials ends up with a screening problem. The Chenxing linear vibrating screen is built to solve that problem in one pass, separating dry bulk material into uniform grades with a straight-line motion that is simple to operate and cheap to maintain.
A linear vibrating screen is a rectangular screening machine driven by two counter-rotating vibration motors. The two motors create a straight-line throwing motion, so material moves forward along the screen deck while smaller particles fall through the mesh and larger particles travel to the discharge end. The design is widely used for dry powder and granule classification, de-dusting and impurity removal in chemical, food, plastic, abrasive and ceramic plants.
Chenxing offers the screen as a standalone unit or as part of a larger dry processing layout, and it appears in the separation machinery catalog alongside powder handling and mixing equipment. The machine combines a screen box, replaceable mesh frames, damping springs, a base frame and a sealed inlet, which keeps dust inside the housing instead of spreading through the workshop. For buyers comparing suppliers, the material processing line solutions page explains how a screen fits into a complete line. To check the source specification sheet and application notes, view more machine details.
Plants new to screening can browse the Chenxing Machinery main site to see how vibratory separation, conveying and mixing equipment work together in typical installations.
Two vibration motors are mounted on the screen box and rotate in opposite directions. When the motors run, the horizontal components of their vibration cancel each other while the vertical components add up, producing a straight-line motion at a fixed angle. Material thrown up by the vibration lands a little further forward on the deck, so every particle moves along the screen in a series of small jumps.
The throwing action separates material by size. Particles smaller than the mesh opening pass through the screen deck and collect as undersize, while oversized particles keep traveling and exit from the discharge outlet. With several stacked decks, each layer has a different mesh, and the material splits into multiple grades in a single pass.
The screen works well with dry, free-flowing material, and it can be placed directly after a mixer or a crusher. Powder plants often run an automatic compounding with screened powder station, where the screen protects downstream equipment from oversize lumps. Material leaving the screen can be moved to the next stage by powder suction systems for screened material or continuous powder handling with screening. Process engineers who plan a full layout can review compounding plant design with sifting before choosing equipment sizes.
Long-life exciters. The vibration motor or exciter is rated for over 60,000 hours of service, which means years of daily use before replacement becomes a real concern. The machine keeps working through 24-hour shifts without the vibration degrading.
Strong vibration with a 9-12 mm amplitude. The screen throws material clear of the mesh, so fine particles do not sit on the surface and block the openings. Sticky or irregular granules still separate cleanly.
High screening efficiency. The combination of amplitude, frequency and throwing angle delivers a typical efficiency of 96%, low enough in losses for most production grading work.
Multi-layer grading. The screen accepts 1 to 5 layers, splitting feed into 2 to 6 size fractions at once. A three-layer machine, for example, produces oversize, mid-size and fines in one operation.
Sealed, dust-tight housing. The optional full enclosure stops powder from escaping at the inlet and discharge points. This keeps the workshop clean and reduces material loss on fine powders.
Quick mesh changes. Screen frames are built to be swapped without disassembling the whole machine, so a plant can change cut points between production runs in a short time.
The screen also works well with the sieving and classification auxiliaries found around a dry processing line, such as dosing feeders and collection hoppers. When the screen is installed after a mixer, the mixing station feeding a vibrating screen keeps the feed steady and prevents surges that reduce separation quality. Real installations are shown in the separation case studies section, and separation technology updates cover improvements in mesh materials and vibrator design.
The table below lists the key figures from the source specification. Chenxing confirms the exact duty point for each installation during the enquiry.
| Parameter | Value |
|---|---|
| Processing capacity | 20 t/h |
| Vibration direction angle | 45°-60° |
| Feed particle size | 0.074-5 mm |
| Screening efficiency | 96% |
| Screen layers | 1-5 (2-6 product grades) |
| Exciter service life | Over 60,000 hours |
| Vibration amplitude | 9-12 mm |
| Duty rating | 24-hour continuous operation |
Material options. Stainless steel is the first choice for food, chemical and pharmaceutical duty because it resists oxidation and rust. Carbon steel is more economical and works well for common industrial materials where corrosion is not a concern.
Model naming. Models in this class are named by deck width in millimeters followed by deck length in millimeters. A 520 model means 500 mm wide by 2000 mm long, a 1030 model means 1000 mm wide by 3000 mm long. Deck size drives throughput, so the right model depends on the feed rate and the space available on site.
| Model | Deck width x length |
|---|---|
| 520 | 500 mm x 2000 mm |
| 525 | 500 mm x 2500 mm |
| 530 | 500 mm x 3000 mm |
| 1020 | 1000 mm x 2000 mm |
| 1025 | 1000 mm x 2500 mm |
| 1030 | 1000 mm x 3000 mm |
Selection normally starts with feed rate, particle size and moisture, then moves to cut point, number of layers, material of construction and floor space. Chenxing engineers help with the calculation, and buyers can ask Nicole about screen selection directly. Drawings, dimension sheets and installation notes are collected in the screen machine documentation section.
The linear vibrating screen handles dry, granular and powder materials across many industries:
Chemical powders and granules: fertilizers, pigments, catalysts, salt
Food and grain: flour, sugar, starch, rice, feed, spices
Plastics: pellets, regrind, recycled flakes, filled compounds
Abrasives: corundum, glass beads, polishing media
Ceramics: clay, frit, glaze powders, ceramic granules
Pharmaceuticals: APIs, excipients, coated granules
Metallurgy and building materials: ores, slag, sand, aggregates
In plastic recycling, the screen removes dust and fines from washed flakes and pellets so the material meets the quality standard for re-extrusion. The plastic recycling line with screening stations shows how the screen sits between washing and drying. A film recycling washing line with vibratory sifting or a PET bottle washing line with granule classification can end with a screen before bagging. Grinders feed oversize material back to grinding machines paired with sieves, and two stage recycling with separation uses screening to close the material loop. Recycled and reground material can also be sized by an agglomerated powder sizing stage, with crushed material loading before screening keeping the feed steady and washing machinery with screening stages completing the line.
Routine maintenance on a linear vibrating screen follows a short checklist:
Inspect the damping springs and support bolts for cracks or looseness
Lubricate the vibration motor bearings according to the manual
Check screen mesh tension and replace worn or torn cloth on schedule
Verify motor wiring, cable clamps and the control box connections
Clean the screen surface when material builds up or blocks the mesh
Chenxing sells the machine direct from the factory, provides pre-sale selection support, and backs every screen with a one-year warranty and a spare parts supply. Replacement springs, mesh frames, vibration motors and control parts stay available after delivery. Service questions are answered on the screening equipment questions page, and buyers can contact the Chenxing equipment team for installation advice. The complete list of screening and separation options appears under screening machines in the full catalog.
It separates dry powder and granules into size fractions, removes dust and oversized lumps, and prepares material for the next process step such as mixing, extruding or bagging.
Yes. The screen removes dust and fines from plastic pellets and regrind, which improves product quality and protects downstream extrusion equipment from contamination.
With up to five screen layers, one machine can split the feed into up to six size fractions in a single pass.
Chemical powders, food and grain, plastic pellets and flakes, abrasives, ceramics, pharmaceuticals, salt and sugar, and many other dry granular materials within the feed size range.
The exciter is rated for over 60,000 hours of service, and the screen is designed for continuous 24-hour operation.
Stainless steel resists oxidation and rust, which suits food, chemical and pharmaceutical duty. Carbon steel is more affordable and works for common industrial materials.
Start with feed rate, particle size and moisture, then decide cut point, layers and material of construction. Deck width and length determine throughput, so the model number reflects the deck size you need.
It is built for continuous duty. The long-life exciter, welded steel frame and sealed housing keep the machine stable through round-the-clock shifts.
Factory-direct supply, pre-sale selection support, a one-year warranty and a continuous spare parts supply, including springs, mesh frames and vibration motors.
Need a linear vibrating screen sized for your material? Nicole at Chenxing Machinery can help with model selection, mesh advice and delivery planning. Email ceo@cxsljx.com or message +86 159 5118 7228 (WhatsApp) for a quotation.