Quarry & Aggregate Conveyors

Quarry conveyor systems carry crushed rock from the primary crusher to the screens, the stockpiles, and the load-out, in about the hardest material a belt ever sees. Rock is heavy, sharp, and abrasive. It lands in lumps rather than a gentle stream. It runs shift after shift. Remcon designs, fabricates, and installs custom heavy-duty belt conveyors out of Airway Heights, Washington, built to order around your material and your layout.

Where Conveyors Sit in an Aggregate Plant

An aggregate plant is a sequence. Pit run crosses a scalping screen, goes through a primary crusher, on to secondary and tertiary crushing, across sizing screens, and out to graded stockpiles and the load-out. Oversize goes back around for another pass. Every arrow between those boxes is a conveyor.

So a quarry conveyor is not one machine. It is a set of jobs sharing one basic machine:

• Crusher discharge. The belt under a crusher takes lumps from height. Foot for foot, the hardest-used steel and rubber in the plant: see crusher discharge conveyors.
• Closed circuit. The runs that take screen oversize back to a crusher and return it to the deck.
• Screen discharge. One conveyor per graded product, off each deck, out to its own pile.
• Stockpiling. The inclined run that builds the pile. Incline is a belt question first: see maximum conveyor incline angle.
• Reclaim and load-out. Out from under the pile or a bin, into the truck or railcar.
• Surge and storage. Feeding and drawing bins, bunkers, and hoppers so one slow step does not stall everything behind it.

They are not interchangeable. The crusher discharge belt needs impact protection the stockpile belt never will. How those runs meet and hand off has its own page: transfer conveyors.

What Remcon Builds in a Pit, and What It Does Not

Several different machines get sold under the words quarry conveyor, and they come out of different kinds of shop. Naming which ones leave Airway Heights and which ones do not saves a phone call, and it is the only honest way to use the vocabulary.

Overland conveyors are not ours

An overland conveyor is a belt built to cross ground rather than to move material inside a plant: anywhere from a few hundred feet to several miles, usually carried on trestles, often built on a truss frame, a steel lattice that lets the span between supports run long without excessive deflection. It is a different engineering problem from a plant run. Horizontal curves, terrain, long-distance tension and take-up, and decades of weather on the same steel.

Remcon does not build overland conveyors. What Remcon builds is the fixed steel inside the plant and at either end of a run like that: the transfer that loads it, the surge that keeps it fed, the chute work, the receiving conveyor at the far end, and the platforms and ladders that let somebody reach any of it. Where an overland supplier is on the job, those fixed conveyors get built to that machine's published dimensions, the same way they get built to a stacking conveyor's.

Portable plants, track plants, and skids are not ours

Wheel-mounted portable plants and track-mounted mobile plants are their own product category, built by plant manufacturers, and on one of those the conveyor under the crusher ships as part of the machine. Remcon does not build portable or track-mounted plants and does not build the chassis conveyor that comes with one. Remcon builds fixed conveyors, for stationary plants.

That is not the same thing as a machine that cannot move. A long run leaves the shop as bolted sections because that is how it gets on a truck, and those same joints are what let it be dismantled and put back up somewhere else in the pit. Moving and reconfiguring installed systems is its own line of work here, on Remcon's equipment and on other shops'. What that is not is a portable plant. Two different answers to the same question, and worth not confusing on a quote request.

Crushers, screen plants and stackers are not ours, and get engineered into the line anyway

Remcon does not build crushers, aggregate screen plants, or radial and telescopic stacking conveyors. Those are purpose-built machines from their own manufacturers. What Remcon does is design the fixed conveyors and the surrounding steel to those machines' published dimensions, so elevations and transfers get settled on a drawing rather than on a gravel pad with a crane on the clock. The stacking case is worked through in full further down this page.

What is ours, in the words a pit uses

Strip those out and what is left on the list at the top of this page is a fixed conveyor and the steel around it. That is the machine Remcon designs, fabricates, installs and repairs, built to order and nothing stocked. A pit names its conveyors by where they stand rather than by what they are, so the name changes down the plant and the machine does not. The belt under a crusher is a crusher discharge conveyor. The run that carries screen oversize back for another pass is a closed-circuit return, and it is sized against the circulating load rather than against what leaves the plant as product. The belt off a deck is a screen discharge. The run between two stages is a transfer, and the handoff at either end of it is where the drawing work sits. A belt drawing out from under a bin, bunker or hopper, or from under a stockpile, is a feeder or a reclaim run. One traveling belt serving a whole row of bins is a shuttle, the section directly below. All of them take chutes, skirtboard, hoods and covers, abrasion-resistant plate bolted in as a replaceable liner wherever rock slides across steel, and the platforms, catwalks, stairways and ladders that let somebody reach the machine.

The list of what Remcon does not build is not an apology and the list of what it does is not a hedge. It is where the drawing stops. Plants fail at the interfaces between vendors rather than in the middle of a belt, and a shop that names in advance which side of an interface it owns is the one that can be held to it.

Filling a Row of Bins: Where a Shuttle Conveyor Fits

Most of the runs above go one place. One job does not. When a single stream has to reach several destinations — a row of product bins, surge bins, aggregate bins under a batch plant — there are three ways to do it: a dedicated conveyor over every position with gates upstream, a tripper riding a conveyor that spans the whole row, or one conveyor that travels. The third is a shuttle conveyor, a belt conveyor on a wheeled carriage rolling along a fixed track, with a belt that runs forward and reverse so material leaves off either end.

The reversing belt is what keeps the machine short: because material can leave from either end, the carriage never has to span the storage it serves. 911 Metallurgist states the rule in one line: a shuttle need be only slightly longer than one-half the stockpile length to discharge anywhere along it. Against a dedicated conveyor per position, that is one belt drive and one travel drive rather than a drive over every bin, and no diverter gate or flop chute sitting in the stream for rock to wedge in. Remcon builds the bins and bunker walls underneath as well.

Where a shuttle does not belong

Out in the yard a shuttle is usually the expensive answer, and the same reference says so: shuttles are normally limited to enclosed storage, because outdoor stacking arrangements cost less for the same pile. That is the boundary, and it is worth knowing before somebody sells you across it. A shuttle earns its keep where the footprint has to be rectangular — inside a building, along a bin row, over a reclaim tunnel — and where the discharge has to land in a defined position rather than anywhere on a pile. For an open stockpile, the inclined run listed above is the cheaper machine.

What travel does and does not do about segregation

A traveling discharge does not stop segregation. It changes the shape and the scale of it, and how you reclaim decides whether that helps you. Graniterock puts the threshold at a largest-to-smallest particle size ratio above 2:1, and notes that a three-quarter-inch base product is already over it. What happens past that threshold is overrun: coarse particles hit the front face of the pile with greater momentum and roll down the outer edge to the toe.

What travel does buy is real, and the source is a DOT rather than a catalog. Georgia DOT's aggregate certification guide says that keeping production cones under stationary conveyor belts to a manageable height minimizes segregation, and that cones left to build up become segregated to their fullest extent. A discharge that keeps moving is one way of never letting a cone get there.

The catch is the pile it builds instead. Laying material back and forth along one center line is chevron stacking, and a chevron pile puts the fines in the core and the coarse on the surface and down at both toes, the whole length of the pile. Reclaimed across its full cross section, face to floor, it blends. Worked from one end or one toe, it ships coarse. Settle how the pile gets reclaimed before anyone designs the machine that builds it.

Out in the Yard: Feeding a Radial Stacking Conveyor

The shuttle above is the answer under a roof. Outdoors the geometry inverts: the storage is not a rectangle with fixed positions, it is a pile. A fixed inclined conveyor is the cheap way to build one and often the right one. It also discharges in one place, and a discharge that stays in one place builds a cone.

The cone is not a housekeeping problem. Graniterock's report on aggregate base stockpiles has the two sentences that decide the economics here. First: a continuous layered stockpile reduces the effects of segregation and eliminates the need to reblend the base before shipment. Second: a pile should not be built so high that the loader has to drive on the material, because that leads to degradation and possibly contamination. Read together, a pile laid down in layers ships closer to how it was graded, and a pile shaped by climbing it gives back some of the product you already paid to crush. That is not a claim that segregation goes away. As the shuttle section above says, how the pile is reclaimed still decides what leaves the site.

The same report names the machines for the job: a radial or telescopic conveyor. A portable radial stacking conveyor pivots at its feed end and travels on wheels through an arc, so the head sweeps and the pile comes out as a crescent instead of a cone, laid down from one machine set once. A telescopic radial stacking conveyor adds a second axis: the head extends and retracts along the boom, so material goes down in courses and the drop to the pile stays short as it grows. Neither is a machine Remcon fabricates. What Remcon fabricates is the fixed steel around it: the run that feeds it, the surge that keeps it fed, the access steel and walkway on that fixed run, and the reclaim conveyor where the pile is drawn from underneath.

The feed point does not move, and that is the useful part

Because the feed end stays where it was set, the fixed conveyor feeding one discharges into a single fixed point, and the handoff can be engineered like any other transfer, not a moving target. What the sweep changes is everything around that point: the fixed run, its legs, its footings and its walkway all have to stand clear of the arc the boom and wheels travel, and of the pile that arc builds. That is a site layout drawing before it is a conveyor drawing.

Four things on the fixed conveyor are set by the machine at the other end, and all four can be settled before fabrication starts:

• Feed height. The elevation of the receiving point, and whether it changes as the boom is raised and lowered. The fixed conveyor's discharge height is built to it rather than shimmed to it later.
• Infeed belt width and the receiving opening. The stream has to land inside it, centered, at every position the machine is worked in.
• Direction and speed at the handoff. Material should leave the fixed conveyor moving the way the receiving belt runs, at close to its speed. Fed across a belt or against it, rock scours the cover and shoves the load off center. The rest of that is on the transfer conveyor page.
• The travel arc. The radius the machine sweeps, and which side of the feed point it sweeps to, decides where the fixed run, its footings, and the power drop can physically be.

Surge, so the stacking end is not chasing the crusher

A stockpiling run downstream of a crusher inherits everything the crusher does, including stopping. Where the plant and the stacking end do not want to run at the same rate, or one stops with material still in the other, the fix is storage between them: a surge hopper or bin the plant fills and the stockpiling run draws from at a rate it can hold. Remcon builds the bins, bunkers, and hoppers and the feeder conveyor underneath them. What lands on the belt back at the crusher is its own subject: crusher discharge conveyors.

One drawing for the whole path

Trouble at the stacking end is rarely a machine failure. It is two vendors and an elevation difference nobody owned: the fixed conveyor drawn to its own scope, the stacking conveyor delivered to its own dimensions, and the two meeting for the first time on a gravel pad with a crane on the clock. Remcon designs, fabricates, and installs the fixed conveyors with its own crews, and builds them to the stacking conveyor's published dimensions, which come from that machine's manufacturer, on this job and every job. Elevations, arc, and transfer get settled on one drawing before steel is cut. That is the turn-key conveyor systems argument applied at the far end of the plant, where it usually gets skipped.

Sizing the Belt: Lump Size, TPH, and Speed

Two numbers set a belt's width and they pull against each other: the tonnage you need through it, and the largest lump that lands on it. Tonnage is the number people lead with on the phone. Lump is usually the one that decides.

The lump sets the floor

A belt has to carry its worst lump without the rock riding the edge or bridging the trough, and the standard relationship is a ratio to belt width. The ratio moves with how much of the feed is lump, so published sizing tables carry two columns: one for a uniform feed where every piece is at or near top size, one for a graded feed that is mostly fines. MEKA's handbook table puts a 900 mm belt, near enough a 36 inch one, at 175 mm lumps for a uniform feed and 325 mm where the feed is around four fifths fines. That is about a fifth of belt width in the first case and about a third in the second: the same belt, nearly double the allowable rock, and the difference is gradation rather than steel.

Then there is the number that never makes it onto the quote request. The rule of thumb in the conveyor design literature is to design for two to three times the nominal or specified lump, because crusher settings get opened up and screens get run harder to chase production, so the rock that actually arrives is bigger than the rock on the data sheet. Tell us the top size you see on the belt, not the closed side setting.

TPH is a calculation, not a rating

Tons per hour off a troughed belt is the cross-sectional area of material it carries, times belt speed, times the bulk density of what you are moving. In imperial terms, capacity in TPH is the load cross-section in square feet times density in pounds per cubic foot times belt speed in feet per minute, divided by 33.33, which is only 2,000 pounds over 60 minutes rearranged. Four things move that cross-section:

• Belt width. The biggest lever, and more than proportional, because the trough deepens as it widens.
• Trough angle. 20, 35 or 45 degrees. Going from 20 to 35 adds roughly a quarter to the carried area, at a cost in belt stiffness and transition length covered further down this page.
• Surcharge angle. The slope the heaped material holds on the surface of a moving belt. It runs well below the same material's static angle of repose, because vibration and forward motion flatten the heap, and it is a property of your rock rather than of the machine. CEMA's load cross-section tables are indexed on it, and the swing is not small. For a 36 inch belt at a 35 degree trough the published cross-section runs about 0.83 square feet at a 10 degree surcharge, 0.98 at 20, and 1.06 at 25. Same belt, same speed, nearly thirty percent apart on the material alone.
• Edge distance. A strip at each edge that deliberately carries nothing, so a belt that wanders a little, or sags between sets, still keeps its load. CEMA's standard edge distance is 0.055 times belt width plus 0.9 inch, which on a 36 inch belt is 2.88 inches a side. A wider belt hands a little of its width back.

Then the slope takes its cut. As the belt tips, the loaded cross-section shrinks, and capacity calculations carry a slope correction factor for it. Published factors differ between references and every one of them bites harder as the angle grows, so use the one your design standard uses rather than splitting the difference. That is the small part of the incline question. Whether the angle is workable for your material at all is the large part: see maximum conveyor incline angle.

Speed is the third lever, and the easiest to overspend

The same tonnage comes off a narrow belt run fast or a wide belt run slow. On hard rock the wide and slow answer is the one that lasts, because speed raises the energy at every transfer and the revolutions on every idler bearing. MEKA's recommended speeds for hard ore and sharp-edged stone run from 1.75 m/s on a 450 mm belt to 3.0 m/s on a 1,000 mm belt, roughly 345 to 590 feet per minute, with the narrowest belts held slowest. That band starts below the general bulk-handling range described further down this page and tops out around the middle of it, which is the point: sharp rock is where you spend width to buy speed down.

What Remcon does with those numbers

Remcon publishes no tons-per-hour rating. On a machine built to order, a published one would be a claim about your material dressed up as a claim about ours. TPH is what we ask for, not what we advertise. Send it with the material, its real top size, and roughly what fraction of the feed sits at that top size, and belt width, speed, trough angle, and idler class and spacing get worked out against them and quoted for the job. The rest of what a quote needs is listed further down this page, and how the last three of those get decided together is in troughing idler selection.

What Changes When the Material Is Abrasive

A conveyor for cardboard and a conveyor for crushed basalt look like the same machine on a drawing. They are not the same machine in the shop. Conveyors for abrasive materials are not a separate product line with their own model numbers. They are ordinary belt conveyors on which six decisions went differently, and all six get made before steel is cut.

Belt cover grade and thickness

Two ARPM cover grades come up in rock work. Grade I carries the higher rubber tensile and elongation requirements and is the usual recommendation for large, heavy lump ore, granite, and trap rock, where cutting and gouging is the failure mode. Grade II is the general recommendation for most above-ground abrasive handling: crushed ore and rock, limestone, slag, sand, aggregate. Know this before anyone sells you the higher number. The grade is a minimum-property specification, not a ranking of abrasion resistance, and cover thickness matters as much as the grade printed on it. See how to read a conveyor belt spec.

Trough angle

The common angles are 20, 35, and 45 degrees. Which angle suits which load is settled on the troughing idler conveyor page. What abrasive service adds is a conflict between two things you want at once. Twenty degrees was the old standard, and better belt construction is what made 35 and 45 ordinary. The deeper trough is worth having: going from 20 to 35 degrees adds roughly a quarter to the cross-sectional area the belt carries. But the thick cover you want for wear life stiffens the belt again, and a stiff belt fights a deep trough. A 45-degree trough also needs longer transition lengths at the pulleys and pulls more power at the idler junction. On rock, cover thickness and trough angle get decided in the same conversation, not one after the other.

Idler class and spacing

CEMA grades idler rolls into classes by shell thickness, bearing size, and maximum load, from Class B to Class F across belt widths of 18 to 120 inches. Heavier material and wider belts want a heavier class and closer sets, because sag between sets pushes material out the sides and opens gaps at the skirt seal. Remcon does not publish one class it uses on every job. Diameter, class, and spacing are sized to the application and quoted per job.

The load zone

One short stretch of belt decides how often the whole machine comes down, which makes this an economic question before it is a mechanical one. Bent idler frames, rolls that fail early, and a spillage pile that keeps coming back are how a plant learns the zone was specified for a gentler drop than it actually gets. Rubber cushion-disc impact idler sets are the starting point. Drop height, lump size, and how far the skirting has to run before the load settles decide what else belongs there, and all of it gets specified with the conveyor rather than bolted on after. The detail, including where an impact bed beats idlers and how long the skirtboard has to be, is on the crusher discharge conveyor page.

Chutes, hoppers, and everything the rock slides across

The belt is not the only thing wearing. Chutes, hoppers, impact walls, and discharge points get worked by the same rock, and the standard fix is abrasion-resistant plate in the high-wear zones, bolted in as a replaceable liner rather than welded in as structure. The wear surface is then a consumable and the vessel is not. What AR400 and AR500 are, and why bolting beats welding, is covered in stainless steel vs. abrasion resistance. An abrasion resistant conveyor is not a model you can order. It is four decisions: cover grade, plate grade, where the liner bolts in, and how often you plan to change it.

Belt speed

Speed is a wear multiplier that never shows up on a spec sheet as one. The usual working band for bulk belts is about 500 to 700 feet per minute, and above roughly 800 feet per minute, four meters per second, cover and roller-bearing wear climb sharply on hard rock, because speed raises the energy at every transfer and the RPM on every idler. The lever is width: a wider belt moves the same material at a lower, more forgiving speed.

The Record: What We Have Built for Rock and Minerals

The heavy-duty troughing idler conveyor below was fabricated for a silver mine. Three-roll troughing sets on the carrying side, flat return rolls beneath, built to take ore rather than to look good in a brochure.

Minerals work is familiar ground here. Also in the job book: sand conveyors built in 2012, a drag chain belt built in 2025 for a contractor who services mines, and a magnetite separation job in 2011. Different machines, same kind of material. Recycling is the larger part of what leaves this shop, and that is the point rather than the caveat: glass, cans and C&D fines are abrasive, wet and full of tramp metal, and a frame built to survive that is the same frame a rock plant needs.

What carries over is the shop, not a track record in rock. Remcon comes at this work from the recycling industry, equipment that handles materials that are rough on machines, such as whole and broken glass and tin and aluminum cans, and we have built machinery for mining, construction, and manufacturing alongside our recycling and solid waste lines since 1977. Glass and cans are not crushed basalt, and nobody here will tell you otherwise. What transfers is the fabrication, the component selection, and the crews that install it.

One number from that sand job, because nobody else publishes theirs. The idler line on the drawing reads PPI, CEMA class C, 18-inch belt, 5-inch rolls, a 35-degree carrying trough, and a 20-degree flat return. That is what the material and the layout called for on that job. It is not a house standard, and anyone who quotes you a class before asking what you are moving is guessing.

The Drive

Remcon's conveyor drive standard is the Dodge Torque Arm II shaft-mounted reducer, v-belt driven. These reducers have been used almost exclusively in the sand, rock, gravel, and mining industries for many years, and are well proven. Remcon has used them since 1990.

Read that for what it says. It is a claim about the reducer, not about us. What it means for a quarry buyer is that the drive on a Remcon conveyor is the same drive family the pits have run for decades, and parts for it sit on a distributor's shelf rather than in one shop in Washington. Sizing and bearings: conveyor drive and bearing specs that actually matter.

Conveyor or Truck Haul

Any fixed conveyor run in a pit competes with a haul road and a truck. Do that arithmetic before anyone quotes steel.

The tradeoff is capital cost against operating cost. A study of an iron ore operation in Brazil put the capital cost of a haul truck fleet at a little over half the cost of building the conveyor, while the operating cost of moving a ton by conveyor came out at about a quarter of the truck cost, with 29 percent lower carbon emissions. That is the general pattern: conveyors cost more to put in, cost less per ton to run, and need less maintenance per ton over the same distance.

So a conveyor wins on two fixed points, a lot of material, and years of it. What a conveyor cannot do is move. If the face keeps advancing, or the volume between two points is occasional, the truck is still the right tool and we will say so. None of that depends on a claim about Remcon. It is arithmetic about your site.

A Quarry Conveyor Manufacturer, Not a Catalog

Much of what sells quarry conveyors online is a catalog with a logo on it: an importer or a belting house putting its own name on somebody else's machine. Remcon is a quarry conveyor manufacturer in the literal sense. The design, the steel, and the installation crew come out of one building in Airway Heights, Washington, and no conveyor leaves here as a shelf model. Every machine is designed, fabricated, installed, and later repaired by the same shop, which is why the specifications below are ranges and selections rather than model numbers. A custom quarry conveyor that has to fit between an existing screen tower and a stockpile is a drawing problem before it is a manufacturing problem. Frames are heavy welded steel, sized to the load and the site, and long runs ship in bolted sections for assembly on site.

• Dimensions that match the site. Length, lift, discharge height, and frame set by where the machine has to go.
• One shop for the surrounding steel. Hoppers, chutes, bins and bunkers, and the catwalks and ladders that let somebody reach the machine.
• Equipment we do not fabricate, bought in and engineered into the line. A plant is never all one shop's steel. Where the layout calls for a machine that is somebody else's specialty, it gets designed into the elevations and the interfaces rather than left at the property line for the buyer to reconcile. Which pieces are fabricated here and which are bought gets named job by job: see turn-key conveyor systems.
• Nationwide shipping and installation. Conveyors ship from Airway Heights, Washington, and Remcon's own crews erect them. See installation services.
• Parts after the sale. Replacement belts and parts for the life of the machine, for our equipment and other brands.

That is the first question worth asking a vendor. The second is who owns the drawing. Every plant of any size has equipment from more than one maker in it, and lines fail at the interfaces between them, not in the middle of a belt. A shop that draws, welds, and erects its own conveyors is the one that can own those interfaces, whoever built the machine on the other side of them.

Covers for Outdoor Service

Most quarry runs are outdoors, which adds two problems the plant floor does not have. Rain and snow soak the product and can slip the belt. Wind lifts fines off the belt and scatters them across the site. Covers and hoods over the carrying run address both, and shield the belt and idlers from UV and grit besides. Fugitive dust is regulated, so on some sites a cover is a permit question rather than a housekeeping one. Remcon builds covers and hoods into conveyors that run outdoors or carry material that cannot be allowed to blow around.

Guarding, Walkways, and What MSHA Part 56 Asks of Them

A surface quarry or a sand and gravel pit is a mine. It is inspected by MSHA under 30 CFR Part 56, Safety and Health Standards—Surface Metal and Nonmetal Mines, rather than by OSHA, and Part 57 is the underground counterpart. That is worth knowing before a conveyor gets drawn, because several of its standards are about steel that comes out of a fabrication shop: guards, railings, walkways and stairs.

Guards, and the seven-foot rule

56.14107 names the parts. Moving machine parts have to be guarded to protect people from contacting gears, sprockets, chains, drive, head, tail and takeup pulleys, flywheels, couplings, shafts, fan blades and similar moving parts that can cause injury. Guards are not required where those parts are at least seven feet away from walking or working surfaces.

Read the exemption carefully, because it cuts both ways. It is measured from walking and working surfaces, so putting a maintenance platform under a drive can turn an unguarded head end into one that now needs guarding. That is a layout decision, taken when the catwalk is drawn rather than discovered when it goes in.

56.14112 is about the guard itself: it has to withstand the vibration, shock and wear of normal operation, must not create a hazard by its use, and has to be securely in place while the machine is running, except for testing or adjustments that cannot be made with it off. The practical translation is short. A guard that has to come off to reach a grease fitting comes off and stays off. Hinged panels, captive fasteners, and grease lines run out to a fitting on the outside of the guard are fabrication decisions, cheap at the drawing and expensive afterwards.

The travelway beside the belt

56.14109 covers unguarded conveyors next to travelways, and it is a genuine either/or. Such a conveyor needs either emergency stop devices located so that a person falling on or against it can readily deactivate the conveyor drive motor, or railings positioned to prevent people falling on or against it, able to withstand the vibration, shock and wear of normal operation, and constructed and maintained so they do not create a hazard themselves.

Which one you choose changes the steel. A pull cord down the length of a run needs mounting brackets, corner pulleys, and switches at intervals along every side people walk. A railing needs posts, and posts need something to land on. The Pit & Quarry University handbook gives the same advice from the operator's side: design safety into the conveyor from the start, fit continuous emergency shutoff pull cords, and enclose return rolls to take out the pinch points. Either answer is cheaper as a line on a drawing than as a retrofit around a running belt.

Access, crossovers and toeboards

Two short standards carry most of the access work. 56.11001: safe means of access shall be provided and maintained to all working places. 56.11002: crossovers, elevated walkways, elevated ramps and stairways shall be of substantial construction, provided with handrails, and maintained in good condition, and where necessary toeboards shall be provided.

On a plant that reads as a walkway beside an elevated run wide enough to actually work from, a crossover over a belt rather than a step across it, a stair to the head pulley rather than a climb up the frame, and a toeboard so a dropped wrench does not reach whoever is underneath. Remcon builds platforms, maintenance catwalks, stairways and ladder access custom-fit to existing structures and machinery, and installs them with its own crews.

What Remcon claims here, and what it does not

Remcon is not the party that certifies your site, and there is no compliance package to buy. What Remcon does is fabricate the steel to the standard the site is inspected against, so the useful thing to say at quote time is which standard that is. Say OSHA, as a recycling plant would, and the access steel gets drawn to OSHA. Say Part 56 and it gets drawn to Part 56, and the difference lands on the guard panels, the railing, the crossover, and where the pull cord and its switches go. Asked at the drawing, it costs a conversation. Asked after the steel is cut, it costs twice.

Quarry & Aggregate Conveyor Specifications

The real numbers and the real selections. Where something is quoted per job it says so.

What We Need to Quote It

A useful quote starts from six things, none a model number.

• The material, and its largest lump.
• The tonnage you need through it.
• Where it picks up, where it discharges, and the lift between.
• What loads it, and from what height: crusher, screen deck, hopper, front loader.
• Indoors or outdoors.
• What is already there, if the machine has to fit an existing plant.

Send that and you get a design rather than a cut sheet. Remcon also repairs, rebuilds, and relocates equipment that is already installed, so if the question is whether an existing run is worth saving, that is a conversation too. See the rest of the line on the conveyors page, or get a quote.

Quarry & Aggregate Conveyor FAQ