Mobile Crusher FAQ

Match the machine to the stage, not to the brand. A jaw crusher is the primary unit for hard rock — granite, basalt, river gravel — and takes feed up to 700–800 mm. A cone crusher is the secondary unit for hard, abrasive rock where you need a tight final size. An impact crusher suits medium-hard and brittle material such as limestone, and gives the best particle shape. Most quarries end up with jaw plus cone; recycling yards often run a single impact unit. See the mobile jaw crusher plant and mobile cone crusher plant pages for the full model range.

Tracked units move on their own tracks, work on uneven ground and need no towing vehicle, which is why they dominate quarries and demolition sites. Wheel-mounted units are cheaper to buy and faster on paved roads between nearby sites, but need a flat working area and a tractor unit. If your site changes every few months and the ground is rough, choose tracked.

One unit is enough when you only need to reduce size — for example a jaw plant producing 0–80 mm for sub-base. You need a second unit (cone or impact) plus a screen when you must sell graded aggregate such as 0–5, 5–10, 10–20 and 20–40 mm. A common low-risk route is to start with a jaw plant and add a screen or cone later; all our units are designed to work in series.

Only with a screening unit in closed circuit. The crusher itself produces one discharge stream; a screen splits it into two or three sizes and returns oversize to the crusher. Our mobile screening plant is normally paired with a jaw or impact unit for this. A single machine alone gives you one product band with an adjustable top size.

Five things: material type, maximum lump size in mm, target output in t/h, the final sizes you need to sell, and the site conditions (power supply, altitude, temperature). With those we can name a model, calculate the crusher setting and give a price the same day. Send them through the contact form and an engineer — not a sales rep — will answer.

It depends on how long you will stay on one site. As a rule of thumb: a project under three to five years, or a site that will move, favours mobile — no civil foundations, no dismantling cost, and the asset keeps its resale value. A quarry with a 10-year plus reserve and stable demand usually gets a lower cost per ton from a fixed line. Our cost breakdown article covers the money side.

180–350 t/h, according to our current specification sheet. The range is wide because output depends on three things: how easily the rock breaks, the closed-side setting you run, and how evenly the feeder is loaded. A hard, abrasive granite at a 100 mm setting sits near the bottom of that range; limestone at 150 mm sits near the top. Do not size a plant on the top figure alone.

700 mm for the SE-1060 and SE-J1060, 800 mm for the SE-1160, and 500 mm for the SE-650D, SE-J650D and TZ6510. The limit is the feed opening, not the crusher: SE-1060 is 1060 × 750 mm. As a working rule, the largest lump should stay below 80–85% of the opening width, because slab-shaped rock bridges more easily than round rock of the same dimension.

Yes. The SE-1060 adjusts from 80 to 250 mm, the SE-1160 from 0 to 250 mm, the SE-J1060 from 0 to 180 mm, the SE-650D and SE-J650D from 0 to 100 mm, and the TZ6510 from 65 to 185 mm. On cone units the range is 8–44 mm (SY-HP200), 16–40 mm (SY-HP300) and 16–60 mm (SY-HP400). The low end is a mechanical limit, not a practical setting: running very tight on a jaw wears plates fast and cuts throughput sharply.

The SE-1060 uses a 110 kW crusher motor and 146.9 kW for the whole crushing operation including feeder and conveyor drives; the SE-1160 is 132 kW / 168.9 kW, and the SY-HP300 cone is 250 kW / 306.3 kW. Add about 20% headroom when sizing a generator or transformer, and confirm whether your site runs 380 V or 415 V, 50 or 60 Hz.

Both are possible. Machines can be supplied with an on-board diesel generator set for sites without grid power, with electric drive only, or as dual power so you can switch between the two. Dual power is the usual choice for contractors who move between a grid-connected quarry and a remote project — tell us at enquiry stage, because the frame layout differs.

The SE-1060 weighs 45.5 t with transport dimensions of 15,480 × 3,180 × 3,950 mm; the SE-1160 is 48 t and the SE-J1060 38 t. At these weights a unit travels as break-bulk or on a flat rack rather than inside a container, and the receiving site needs a crane or a low-bed trailer of matching capacity. We confirm the shipping method and lifting points before booking.

We quote per configuration rather than publish a list price, because four variables move the figure by 30–40%: the model, the power package (diesel, electric or dual), the optional equipment (magnet, dust suppression, side conveyor, remote control) and the shipping terms. Send material, feed size and target output through the contact form and you will have a written quotation with a named model within 24 hours — including the cases where a smaller unit does the same job for less.

The machine with its standard configuration, the tool kit, an operation and maintenance manual in English, and the factory load test report. Not included unless listed: spare wear parts beyond the first set, dust suppression, magnet, generator, freight, insurance, import duties, and on-site installation. We itemise every line in the quotation so there is no surprise at the port.

Standard terms are 30% T/T deposit with the order and 70% before shipment, against photos and the test report. For orders above a certain value we also accept an irrevocable L/C at sight. Terms are agreed in the contract before production starts; we do not ask for full payment up front, and we do not ship against a promise.

Standard models are built in 20 working days after deposit. Custom configurations add 10-25 working days depending on the change, plus 3-5 working days for drawing confirmation on the front end. On top of production, allow 20-35 days of sea freight depending on destination port and route. If you have a fixed start date on site, tell us the date rather than the model — production scheduling is built around it.

Yes. We quote FOB, CFR or CIF, arrange insurance on request, and prepare all export documentation. For installation, an engineer supervises commissioning on site; the buyer covers return airfare, visa, accommodation and a local interpreter, and the supervision days are stated in the quotation so the cost is known in advance.

Yes, in three ways: a live video call with the machine running in our test yard, reference videos of units working in similar material, and a factory visit in Anhui where you can watch your configuration being assembled and load-tested. For repeat buyers we can also arrange contact with an existing customer in your region, subject to their permission.

Electric drive is the cheaper route where grid power exists: with 146.9 kW installed on an SE-1060 and a 70–80% average load, expect roughly 100–120 kWh per working hour. Cost per ton then follows from throughput — at 250 t/h that is well under one kWh per ton. Diesel adds fuel, filter and service cost, so per-ton cost rises noticeably; in most cases diesel is chosen for access, not for economy.

Jaw plates in standard manganese typically run 800–1,500 hours depending on the abrasiveness of the rock; blow bars in an impact crusher usually 300–600 hours. Both figures assume correct feeding — a plant fed with oversized lumps or with the setting run too tight will wear two to three times faster. We quote the wear-part grade that matches your material rather than one grade for everyone.

Yes — jaw and impact units both process demolition concrete, and rebar is either bent out of the way or cut by the crushing action. Two practical points: keep an overband magnet on the discharge conveyor to pull out loose steel, and expect the rebar to slow the process, so plan output at roughly 70% of the clean-rock figure. Long, bundled rebar should be cut before feeding to avoid bridging.

Dust is controlled with spray nozzles at the feed, discharge and transfer points, plus optional conveyor covers and a dust-suppression unit. Noise comes mainly from the crusher and the engine; enclosures and low-noise engine options reduce it further. Requirements differ by country and by whether you work near housing, so tell us the local limit and we will match the configuration to it.

Yes, with the right options: engine pre-heater and arctic-grade hydraulic oil for −20 °C and below, heated cab, and cold-weather starting aids. Above roughly 1,500 m, both diesel engines and electric motors lose some capacity, so the model is derated at the quotation stage rather than discovered on site. Tell us the lowest working temperature and the altitude when you enquire.

Nine causes, in the order our engineers check them. (1) Model size: if the plant is undersized for the duty, no adjustment will close the gap. (2) Feed rate: slow or uneven feeding leaves the chamber half empty and the crusher turning without doing work — match the excavator or loader to a steady, continuous flow. (3) Feed size: oversized rock is hard for the jaws to grip; keep the largest lump at or below 700 mm on a 1060 and never force-feed the oversize through. (4) Hardness: rock harder than the machine was configured for raises crushing force and wear — test a sample before the project starts, because quartz-bearing rock runs from Mohs 2 to 7 and choosing by material name alone is not reliable.

(5) Fines, moisture and clay: river gravel, wet limestone and soil-bearing ore stick, pack and cannot clear the discharge — add pre-screening or cut the water content. (6) Closed-side setting: too wide passes non-spec material that returns as recirculating load, too narrow over-crushes and shrinks throughput — set it to the product you actually sell. (7) Worn jaw plates: worn teeth lose efficiency quickly, and on typical rock a set runs about 50,000 t of feed. (8) Maintenance: bearing lubrication and loose connections both add friction and load. (9) Site: an unlevel floor makes feeding and discharge harder, and unstable voltage costs power.

Start with ambient temperature, not the control panel. A cold machine cannot develop starting torque from a direct-on-line start, which is why cold-climate sites run a variable-frequency start; in extreme cold such as the Russian Far East we supply an insulated cold-weather kit with the machine. If the ambient temperature is normal, send us the controller fault code and the last few start attempts — most starting faults are diagnosed remotely within one working day.

Shut down and isolate the power first — nearly every injury in this situation happens because someone reaches into a chamber that can still be started. Blockage is almost always a lump that is too large, or too rounded, for the plates to grip. With the plant dead, break the rock with a breaker or drilling hammer, or lift it out; do not pry at it with the drive live and do not put a man in with the engine running.

It can break limestone — a jaw crushes almost anything by compression, from gypsum and limestone through river gravel to quartzite. What it will not do is shape it. If the specification calls for a rounded-shape limestone aggregate, the mobile impact crusher is the cheaper answer per ton of saleable product, even though it costs more in wear parts than a jaw.

Uneven wear means the feed is landing on one side. Wear concentrates where the rock strikes first, so the plate that takes the impact wears through first. Adjust the feeder speed and, where the feeder can be offset, aim the stream at the centre of the feed opening. Also check that the plant is level — on a slope the machine feeds to one side whatever the feeder setting.

Four checks, in this order: is the ground level; is the chamber blocked (clear it by the safety procedure if it is); are the belts and couplings sound; and, if all three are clear, is there tramp metal in the chamber or a loose jaw plate — either of which needs a shutdown inspection before the plant runs again.

Eight controls, most of them free: cap the maximum feed size; feed continuously and evenly instead of in surges; stay inside the rated throughput; set the CSS to the product rather than running it tight; keep wet, sticky material out of the chamber; check jaw plate wear on schedule; lubricate bearings and drives as specified; and log motor current, bearing temperature and vibration so a trend appears before a trip does.

Because it breaks rock by inter-particle compression: the force comes from the mantle against the bowl liner and from stone against stone. Run the chamber empty and the second force disappears — liners wear faster, the product turns flaky and elongated, and the size becomes unstable because the pressure varies with the feed level. The result is more recirculating load, a lower saleable yield and a higher waste ratio.

A cone has no feeder of its own — it sits downstream of the primary and takes whatever it is given, so the cause is almost always upstream: feed rate, lump size, moisture, fines, clay, or a closed-side setting that is too tight. The fix is a proper pre-screen ahead of it, a steady and continuous feed, and a CSS matched to the product rather than to the tonnage.

Predictably. Reducing the CSS lowers throughput and raises the fines; opening it raises throughput and coarsens the product. Too wide and the discharge misses the target size, loading the next stage or the recirculating conveyor; too narrow and you generate excess fines, block the chamber and lose capacity. Set it from the sieve analysis you have to meet, then confirm in the first weeks that the chamber does not block and the product still passes.

Start with the gap between the blow bars and the impact aprons: too wide and rock passes through before it is broken, which is the most common single cause of oversize discharge. Then check worn blow bars and apron liners, rotor speed too low to give the reduction ratio you need, and feed that is coarser than the machine maximum. Close the apron gap first, replace bars and liners once they reach the wear limit, raise rotor speed to increase the reduction ratio, and keep the feed inside the rated size at a steady rate.

First confirm the rock is suitable. High-silica material such as sandstone will eat standard bars in weeks — that duty needs high-chrome blow bars, or a jaw and cone circuit in place of an impactor. If the material is suitable, the wear is coming from the feed: oversized lumps, and a thin feed that lets rock strike the bars without a stone-on-stone cushion, both shorten life. Correct sizing and a fuller, steadier feed are the two cheapest changes you can make.

Either the chamber packed because the discharge could not keep up, or something that should not be in there is jammed in it. Shut down, clear the material to the safety procedure, then check the clearance between rotor and aprons — if it has closed up, that is the cause. Long rebar, wire and concrete-wrapped debris are the usual intruders, and a pre-screen is the preventive measure.

Three causes. An unbalanced rotor, most often after a rotor change where the two sides are not matched in weight or the bars are not in corresponding positions. Blow bars worn unevenly, where one side has lost more mass than the other and both must be replaced as a set. Or tramp metal — rebar or a lump of steel — sitting in the chamber, which needs a shutdown and an inspection.

Blinding is nearly always moisture and fines. Wet, clay-rich feed — soil-bearing ore, river gravel, damp limestone — packs into the apertures and the deck stops screening. The other common causes are too high a proportion of near-size fines, apertures chosen for the wrong cut point, and a feed rate beyond what the deck area can handle. Pre-screen or reduce the moisture, correct the aperture size, and match the feed rate to the deck.

Check the feed before the machine: an overloaded deck, or one fed to the middle instead of across its full width, cannot stratify, so fines stay mixed with oversize. Then the hardware — apertures that no longer suit the cut, mesh that is blinded or worn, feed moisture that is too high, amplitude too low for the load, and a deck angle too shallow or too steep for the material. Amplitude and deck angle are the two settings most often left at the factory default when they should follow the material.

Whenever the feed carries clay, soil or a high proportion of fines — the cases that blind a deck, block a cone and cut jaw throughput at the same time. Removing the minus fraction before the crusher keeps the chamber full of rock that actually needs breaking, keeps the decks dry enough to screen, and usually pays for itself in throughput alone. If you are already running wet river gravel or soil-bearing ore, it is the first change to make.

Eighteen months from commissioning or 3,000 operating hours, whichever comes first, covering design, materials and workmanship of the main machine. Wear parts — jaw plates, blow bars, liners, belts, filters — are consumables and excluded, but we include a first spare set and quote replacement prices with the machine so you know them before you buy.

Common wear and service parts are kept in stock and normally ship within 3–7 days by air express; structural parts and assemblies take 15–30 days, and are shipped by sea or air depending on urgency. Every machine ships with a parts list carrying the part number, so reordering does not depend on remembering a description. We also supply a recommended first-year spares kit with the quotation.

Yes. Commissioning includes three to five days of on-site training covering start-up and shut-down sequence, feeder control to keep the crusher chamber full but not overloaded, daily checks, and how to change jaw plates or blow bars safely. Operators receive an illustrated manual and access to our maintenance videos; refresher training is available when you add a second unit.

Report the fault with photos or a short video and our engineers respond within 24 hours with a diagnosis and a repair plan. Most faults are resolved remotely — sensor, hydraulic or control issues — or by shipping a part. If an engineer is needed on site, we dispatch typically within 5–10 working days depending on visa processing, and the visit scope and cost are agreed before travel.

Yes, within limits. We regularly change discharge conveyor length and side-discharge layout, add magnets, dust suppression, water sprays, remote control and dual power, and adapt paint and labelling for OEM buyers. We will not change the crushing chamber geometry or the frame structure for a single order — that is where reliability comes from, and we would rather decline than sell a machine we cannot stand behind.

It depends on the market. We appoint one partner per region where possible and protect that territory against direct factory sales, so the answer changes as markets fill. Tell us the country and the customer segments you already serve, and we will confirm availability and whether a demo unit is required in your area.

Dealer pricing with published margins, a demo unit programme, technical and sales training for your team, English and local-language brochures, specification sheets and video assets, and shared leads from our website enquiries in your territory. Spare parts are supplied to partners at dealer price with priority air shipping, which is usually the difference between winning and losing a repeat customer.

A registered company, at least one technically capable salesperson and one service technician, a demo machine or the commitment to stock wear parts, and an annual volume plan agreed together. We do not charge a franchise fee or a deposit for the territory — the commitment we ask for is technical capability and honest reporting, not an upfront payment.

Yes. Many partners start with one demo unit and order customer machines against confirmed deposits, which keeps inventory risk low. What we do ask is that wear parts for the models you sell stay on your shelf — a machine that stops for a jaw plate costs far more in reputation than the plate costs in freight.