ZSW Series Vibrating Feeder

The ZSW Series Vibrating Grizzly Feeder delivers continuous and uniform feeding for primary crushers while pre‑screening fine‑grained materials. Built for heavy‑duty mining, aggregate quarrying and metallurgical plants, it effectively prevents material blockages and reduces jaw plate wear to optimize your whole crushing circuit. Widely adopted in complete aggregate and mineral processing lines.

our ZSW series vibrating grizzly feeder is heavy duty feeding equipment with capacity 96-2000t/h for stone crushing and mineral processing plant and has served multiple mining and quarry projects across Southeast Asia and Africa.

Ultrasonic NDT Testing

All main structural plates undergo ultrasonic non-destructive testing before cutting to rule out internal inclusions or micro-cracks.

Dynamic Balance Calibration

Assembled exciters undergo dynamic balancing to prevent irregular vibration amplitudes or eccentric wobbling.

Thermal Stress Relief

The complete chassis is heat-treated to eliminate residual welding stresses, ensuring structural stability under high-G vibrations.

No-Load Factory Run Test

Every unit undergoes a minimum 4-hour continuous no-load trial prior to dispatch. Technicians log bearing temperature rise ≤ 35°C noise levels, and amplitude symmetry to guarantee field readiness.

For real‑world reference, you can check our granite crushing‑sand‑making production line case. It is generally matched with PE series jaw crusher to build a complete crushing solution.

1. What makes the ZSW different from a standard vibrating feeder for a jaw crusher?

The ZSW is built specifically to sit in front of a primary jaw crusher. Instead of a plain trough, its feeding section is made of heavy grizzly bars that scalp out material already smaller than the crusher setting, while the rest travels over the bars into the jaw. The frame is also reinforced to take the impact of large rocks dropping more than a metre from the hopper. In a quarry this combination usually adds 15–25% of usable primary capacity, because the jaw no longer wastes cycles on stone that is already small enough.

2. How does the dual eccentric shaft exciter work, and why does it matter?

Two eccentric shafts are synchronised by a pair of gears, so they always rotate in opposite directions at exactly the same speed. The horizontal components of the forces cancel each other out and the vertical components add up, which produces a straight throwing motion along the trough. Compared with a pair of loose vibration motors, this gear-synchronised arrangement keeps the amplitude steady even when the load on the trough changes from empty to fully loaded. That is why the ZSW stays stable under surge feeding from a loader or an excavator.

3. How do I set the grizzly bar spacing?

Set the gap to match the closed-side feed limit of your primary crusher, not the tonnage you want. Anything smaller than the gap falls through and bypasses the crusher; anything larger goes in. As a practical guide, granite and basalt lines often run 50–80 mm gaps, while limestone can go tighter because the rock breaks more easily. If the material is wet or clay-heavy, open the gaps slightly and use tapered bars, which widen towards the bottom so stones cannot wedge in.

4. Can the ZSW really pre-screen sticky or wet material?

It handles damp material better than a static grizzly, because the vibration keeps the bed moving and shakes near-size stones loose. There is a limit, though. When clay content is high and moisture rises above roughly 10–15%, the bars start to blind and fines ride over the top. In that case the usual fixes are a wider bar gap, a steeper section at the discharge end, and a water spray at the hopper outlet. If the clay is severe, it is worth discussing a stepped or finger-bar design with our engineers before you order.

5. How do I adjust the output on a ZSW feeder?

There are three controls, and it is worth using them in this order. First set the hopper gate opening, which controls the thickness of the material bed on the trough. Second, adjust the eccentric counterweights on the exciter; more overlap means a stronger throw and a higher output, and both sides must be set to the same angle. Third, if your unit has a variable-frequency drive, change the speed to fine-tune the flow without stopping the machine. We normally recommend a running amplitude of 8–10 mm as a starting point.

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