1. Whether a screw drive elevator fits your building

A screw drive elevator is a lift whose car or platform is carried by a threaded steel shaft running the height of the travel. A motor turns the shaft; a drive nut threaded onto it travels up and down and takes the car with it. There is no traction sheave, no wire rope, no counterweight and — on the models built this way — no hydraulic power unit and no machine room. The load path is short and mechanical, and that is the whole appeal.

Buildings split into three groups when that mechanism meets real site conditions. The split is worth doing before anybody quotes, because the two things that kill a screw lift project — no usable pit and a load band nobody needs — are both visible at the drawing stage.

A good fit

Retrofit into an existing building. No machine room, no separate hydraulic plant room, and no oil line to route. The screw column and the guide rails occupy the shaft; the drive sits at the top of the run. This is why the mechanism turns up so often in buildings that were not designed to carry a lift.
A slow, short, heavy run. The page's own envelope is 0.15 m/s, up to 15 m of travel and 2–10 stops. That is a two-to-five-floor machine moving a load that would be awkward, unsafe or slow to carry by hand.
Indoor or outdoor positions. This page's own text lists both indoor and outdoor mounting, and a weather-resistant build is one of the configurations in its own gallery. Outdoor installation is a real option here, not a marketing phrase.
Sites where fluid is unwelcome. A screw drive has no oil reservoir, no cylinder seals and no hydraulic hose. In a food-adjacent store room, a clean workshop or a building where a leak would be a real problem, the absence of hydraulics is a technical advantage.

A poor fit

Anyone who needs speed. 0.15 m/s is roughly 9 m per minute. A four-floor run takes about half a minute each way. For a passenger lift in an office or a hotel, that is unacceptable; for a goods run, it is usually fine.
A structure that cannot take the reactions. A screw lift does not need a machine room, but it does need the shaft structure to carry the drive and the load path. Nobody can confirm that from a catalogue page, and this page publishes no structural drawing.
Sites expecting a pit-free installation by default. This page's own text mentions a pitless retrofit as possible, while its parameter tables carry no pit or overhead figure at all. That is an unresolved item in this page's own content, and it is written out in section 4 rather than papered over.
High traffic. With one screw-driven car at one speed, throughput is fixed. A busy retail mezzanine moving footfall all day will want a different machine.

Settle before you order

The pit and overhead figure for your configuration, in writing. This page's parameter tables do not state either number.
Whether the local authority treats your lift as a goods lift or a passenger lift. The 500–5,000 kg band and the 2–10 stops both invite that question, and the answer changes the paperwork.
The AC or DC decision and the fuse, cable and isolator behind it. The page gives one line on this; your electrician will need more.
The shaft opening and the route in. The screw column arrives in sections and the longest piece has to reach the shaft through the building.

How to use the rest of this page. Section 2 explains the mechanism, section 3 the load band, section 4 the site and power checks, section 5 safety, and sections 6 to 9 the applications, delivery, questions and quotation data. If you are already comparing suppliers, read section 5 first.

2. How a screw drive elevator actually works

Take the rope out of a lift and you lose the sheave, the counterweight and the traction calculation. What replaces them is a long threaded steel shaft — the screw — standing upright in the shaft, and a nut that is threaded onto it and driven to rotate. When the nut turns, it climbs the screw; when the nut stops turning, it stays where it is. The car or platform is bolted to the nut assembly and travels with it.

That single mechanism explains almost every property of a screw drive elevator: why it does not fall if the power is cut, why it has no machine room, why it runs at one modest speed, and why the number of floors matters more to this machine than to any other type.

1. Drive motor

The motor turns the nut rather than hauling a rope. On this model the speed it imparts is written as 0.15 m/s, and the same figure applies whatever the load between 500 kg and 5,000 kg.

Cross section of the mechanism on this model. Press a numbered point to read what that part does and which figure on this page describes it. Nothing in the drawing implies a dimension that this page does not publish.

What the mechanism buys you

Self-holding by geometry. Because the load is carried on a thread, the car does not need a brake to stay put between runs — a screw drive holds its position when the motor stops. That is the mechanical reason a screw lift is described as not free-falling, and it is a property of the thread rather than a feature bolted on.
No machine room and no plant room. There is no hydraulic power unit to house, no oil tank, no pump and no cylinder to anchor below the shaft. This page's own text lists no machine room as a property of the drive, and where a machine room has to be built or carved out of an existing building, that is usually the largest single saving.
No hydraulics in the building. A hydraulic lift carries a column of oil and, if it uses a jack below the car, a cylinder that normally sits in the ground. A screw lift has neither. For a retrofit into an occupied building, or a position where a leak would be a genuine problem, that difference decides the specification.
Low maintenance, as this page states it. The sheet lists maintenance as Low Maintenance. That is a qualitative line, not a schedule: the page gives no interval, no consumable list and no service checklist, so the interval has to come from the supplier in writing (see section 7).

Where the mechanism costs you

Speed is fixed and modest. 0.15 m/s is the only speed listed on this page. You cannot buy a faster screw lift from this sheet, and you cannot tune the speed afterwards, because it follows from how fast the nut is driven around the screw.
Travel height is where the doubt lives. The screw has to be as long as the travel, and a longer, thinner column is harder to keep true. This page states travel up to 15 m and 2–10 stops, but publishes no deflection or alignment figures. Section 5 deals with the two-floor criticism directly, because that is the argument you will meet when you research this drive type.
One car, one shaft, one speed. There is no counterweight to balance, so nothing to trade against capacity, and no way to run a second car on the same screw. Throughput is what one car at 0.15 m/s gives you, and it is worth calculating before purchase.
The screw is a wear item and a precision item. Thread condition, lubrication and alignment are what keep a screw lift quiet and accurate. The page calls the product low maintenance; the honest consequence is that the maintenance it does need is specific, so the spares position for the nut assembly matters more than it would on a rope lift.

Compare the right thing. A screw drive elevator is usually quoted against a hydraulic lift of the same capacity, not against a traction machine: hydraulics are faster over short rises, while the screw is simpler, needs no plant room and holds position without a pump. The blog guide to screw-and-nut lifting systems sets out the mechanism in more detail, and the screw driven elevator range page shows how this model sits in the family.

3. Load and speed: reading the 500–5,000 kg band

This page gives one capacity line: 500–5,000 kg, selectable. One line for a factor of ten is a wide band, and a wide band is exactly where buyers make expensive mistakes in both directions — buying three tonnes of machine to move two people, or buying a domestic platform to move pallets. The pages that rank for this term explain what screw drive is; almost none of them state where the load band actually changes the project. So this section does that instead.

Rated load: pick a point in the band

Rated load on this page's table

5,000 kg

Band: 500–5,000 kg selectable · speed 0.15 m/s · travel up to 15 m · 2–10 stops

The four points above are positions in this page's stated 500–5,000 kg band, not separate catalogue models. The specification figures are the page's own; the notes against each point describe what changes in the project, and are written as questions to settle rather than as machine data.

Why 0.15 m/s is not a defect

Buyers who arrive from a passenger-lift background read 0.15 m/s as a fault. It is better read as the price of the mechanism. At 0.15 m/s a 3 m floor-to-floor run takes about twenty seconds plus door time, and a five-stop installation serving 15 m takes roughly two minutes end to end. For a goods movement triggered a few dozen times a day that is irrelevant; for a building where people queue it is disqualifying, and no amount of specification fixing changes it. So the useful question is not "can it go faster" but "how many trips per hour do I need" — if the answer is under about twenty, a screw drive is comfortable.

4. Site conditions and the AC or DC supply

A screw drive elevator is easier on a building than most machines of its capacity, but it is not indifferent to the building. Three things have to exist before it can be installed: a shaft or a space that can be closed into one, structure capable of carrying the drive and the load, and an electrical supply sized for the motor. This section works through all three, and states plainly where this page stops short.

The specification table, line by line

The table below is this page's technical specification, with the metric figures converted for reference. Switch between the two systems with the buttons: the metric values are the ones the page publishes, and the imperial values are arithmetic, not additional data.

Units

Metric is the source. Imperial figures are rounded conversions of the same values, offered because a large share of enquiries for this machine come from North America.

Technical specification as published on this page, with no value added.
Parameter	Value on this page	What it decides in practice
Drive system	Screw drive	The mechanism and everything that follows from it: no machine room, no hydraulic oil, self-holding at rest.
Rated load	500–5,000 kg (500–5,000 kg)(1,102–11,023 lb)	Which loads the machine is bought for, and whether the authority treats it as a goods lift or a passenger lift.
Travel speed	0.15 m/s (≈30 ft/min)	Trip time and throughput. Single-speed: it cannot be raised at order stage.
Travel height	Up to 15 m (≈49 ft)	How many floors the machine can serve, and how long the screw column has to be.
Stops	2–10	Landing count, and therefore the number of doors, interlocks and call stations.
Door type	Automatic, centre or side opening	Landing layout and the clear opening you can give a trolley or a pallet.
Power supply	AC or DC	Whether the site uses a mains supply or a DC source; the sheet gives no voltage here.
Control system	Microprocessor-based	Levelling accuracy, fault reporting and how the lift is configured at commissioning.
Safety features	Emergency stop, overload protection, safety gear	The three devices the machine is specified with; see section 5 for what each one is.
Maintenance	Low maintenance	A qualitative line only — this page publishes no interval, so ask for the schedule.
Certification	ISO 9001	The only standard named anywhere on this page. It is a quality-management certification, not a lift safety standard.

Two items this page does not settle

Two gaps matter enough to write out rather than pass over. First, no pit depth and no overhead clearance appear in this page's parameter tables, although the page's own descriptive text mentions a pitless retrofit as possible; those are two different statements and neither gives you a number. Second, the parameter table's electrical line reads only AC or DC, while the voltage range 220–380 V appears only in the page's descriptive table. Treat both as items to confirm in writing against your site drawing, not as figures to design from.

Power: what the AC and DC options actually mean

This page lists the supply as AC or DC. Both are single-line entries, so the practical difference has to be read together with the rest of the sheet and confirmed with the supplier. Pick an option below to see what is stated, and what still has to be asked.

AC — the default reading of this sheet

The parameter table lists AC or DC and nothing more. The page's own descriptive table narrows the AC option to 220–380 V AC. If your building has a normal mains supply, this is the configuration to quote against, and the items your electrician needs are the supply voltage and frequency, the circuit protection, the isolator position at the shaft entrance, and the cable route from the distribution board.

Ask for: the running current and starting current at your voltage, and the recommended protective device. Neither is on this page.
Check locally: whether 220–380 V covers your region's nominal voltage, and whether a transformer or a different motor winding is needed.

Four checks before the order is placed

Nothing here needs an engineer to start: all four can be answered from a tape measure, a drawing and a conversation with the electrician.

Site self-check 0 of 4

Space: the shaft or the enclosure exists, and the clear plan size is enough for the car or platform your load needs.
Route in: the longest section of the screw column can reach the shaft through the building, past every doorway and turn.
Structure: somebody who can sign for it has confirmed what carries the drive at the top of the run and the load at the bottom.
Supply: the electrician has given you a voltage, a phase, a protective device and an isolator position in writing.

The outdoor question. This page's own text lists indoor or outdoor mounting, and one of the models in its gallery is described as weather resistant. Outdoors still means the same four checks: the shaft becomes an enclosure, the drive needs its own weather protection, and the landing thresholds have to shed water. The mechanism itself does not change — a screw drive has no fluid to freeze and no hydraulic hose to weather.

5. Safety devices, ISO 9001 and the two-floor question

Search for this drive type and you will meet one criticism faster than any other: that screw drive systems are safe for short distances but become dangerous beyond two floors. It is worth answering directly rather than ignoring, because a buyer who finds that claim after ordering feels misled, and a buyer who finds it before ordering deserves an answer that distinguishes between machines.

The safety line on this page is short. An emergency stop screw drive elevator is not a separate model here: the stop is standard fit, listed alongside overload protection and safety gear, and controlled by a microprocessor panel. So the useful question is not which safety options to add, but what evidence accompanies the three devices that are already specified.

What this page specifies

Emergency stop

A device that removes power from the drive and stops travel. On a screw drive the car then stays where it is, because the load rests on the thread — there is no counterweight pulling it on. The page lists this as a standard feature.

Overload protection

A device that prevents the machine from being run outside its rated load. With a 500–5,000 kg band, the overload setting is part of the configuration: the same machine frame at a 500 kg setting and a 5,000 kg setting are working to different numbers.

Safety gear

The mechanical device that grips the guide rail if the car moves faster than it should. It is the fallback for the failure of every other system, and it is the item to ask about first when a supplier's quotation mentions safety only as a list of names.

Certification listed on this page: ISO 9001 A quality-management certification of the manufacturer's process. It is not a lift safety standard, and this page names no safety standard at all — so this page claims none.

Is a screw lift safe above two floors?

The honest answer has three parts, and the third is the one suppliers usually leave out.

First, the criticism is about a real failure mode, not about the principle. The known concern with screw-driven platforms is what happens to a long column under load and over time: alignment, thread wear and the behaviour of the mechanism if something binds. That is a design, manufacturing and maintenance question. It is not a claim that a thread cannot lift a car three floors up, and the criticism itself is normally written by suppliers of other drive types.
Second, this page's own envelope does not stop at two floors. It states travel up to 15 m and 2–10 stops — more than two floors of travel by any normal definition. That does not prove the criticism wrong, but it does mean that the specification you are reading is not written for a two-floor product. Multi-level travel is being offered.
Third, and this is the part that matters to a buyer: nothing on this page states which standard the machine is built or tested to, and the only certification named is ISO 9001, which is a manufacturing quality certification rather than a lift safety standard. So the correct conclusion is not "safe" and not "unsafe". It is that this page does not carry the evidence, and the evidence has to be obtained before a multi-floor installation is signed off.

Six documents to ask for when travel goes above two floors

The build or test standard for the machine, named in writing, with the certificate or declaration that goes with it.
The rated and test load for safety gear, and the mechanical certificate for the gear itself.
The column alignment and deflection figures at your travel height, not at a shorter reference height.
The maintenance schedule for the screw, the nut assembly and the lubrication, with the interval stated in months or cycles.
The local requirement: whether your authority treats the installation as a goods lift or a passenger lift, and what inspection that triggers.
The handover pack: drawings, wiring diagram, test record and the emergency release procedure, in the language your inspectors read.

None of those six is unreasonable, and a supplier who makes a heavy-duty screw lift should have them. What a buyer should not accept is a page like this one — a specification with no standard named — being turned into a safety assurance by a sales reply. Ask, keep the answer in writing, and treat a missing answer as a real answer.

6. Where a heavy-duty screw lift earns its money

The case for this machine is narrow and specific, which is why it works so well where it fits. It is slow, it holds position mechanically, it needs no machine room and no oil, and it will carry up to five tonnes. A high capacity screw lift is bought for those properties rather than for speed, and a heavy duty screw drive elevator is normally judged against hydraulic machines of the same capacity. Those five properties together describe a particular set of jobs.

Warehouse and factory floors

Moving pallets, machinery parts or stock between the ground floor and a mezzanine without taking a route through the main building. The load band is the reason: 1,000–5,000 kg is stock handling, and 0.15 m/s is beside the point when the alternative is a forklift, a ramp or two people and a pallet truck.

Watch: trip frequency. Stock movements are bursty, and the lift becomes a queue at shift change.

Shop and retail back-of-house

Deliveries arriving at street level into a stockroom above or below, or the reverse. Automatic centre- or side-opening doors matter here, because staff are moving cages and trolleys rather than standing still, and the clear opening decides what can be pushed through.

Watch: the doorway, not the lift. Measure the widest trolley before agreeing a door type.

Workshops and plant areas

Heavy parts, dies, tooling or raw material between levels in a workshop or plant building. A screw lift brings two advantages here that are easy to overlook: there is no hydraulic fluid line running through a working area, and no power unit occupying floor space that a shop needs.

Watch: the environment, not just the load. Dust and swarf decide the lubrication and protection routine.

Large houses, villas and estate buildings

A house lift that also has to move furniture, garden machinery, firewood, wine or a wheelchair with an attendant. This page's own descriptive text puts residential use first, and the width of the load band is what makes it credible in a house: a machine that will take 1,000 kg is not defeated by a piano.

Watch: whether the house really needs the band. Below 500 kg of real demand, a lighter screw lift is usually the better buy.

Clean and fluid-sensitive areas

Positions where an oil leak would be a compliance or hygiene problem rather than an annoyance. A screw drive has no reservoir, no cylinder and no hoses, so there is nothing to leak. The page's own descriptive text also lists hygienic interior options for hospital and hotel use.

Watch: that the cleaning routine suits the mechanism. Ask what the screw and nut need, and how often.

Outdoor and semi-outdoor positions

Yards, external stair cores and annexes, where the enclosure is a structure rather than a room in the building. This page's own text lists indoor or outdoor installation, and lists a weather-resistant model in the same family. A drive with no fluid and no hose is a practical choice for a position that freezes in winter.

Watch: thresholds and drainage. The mechanism tolerates weather; the landing levels have to shed water.

What this machine is not for

Three applications come up in enquiries and belong somewhere else. A lift in a building where people arrive in groups needs speed and traffic handling, and 0.15 m/s with a single car cannot deliver it. A site that wants the load carried through a public lobby needs a passenger-grade installation, not a goods machine with a 5,000 kg plate on it. And a project that wants the cheapest possible way to move 200 kg between two floors is over-buying: the page's related range includes purpose-built light screw lifts for exactly that job, and they cost less for the same reason this one costs more.

Read the load band against the use, not against the price. The band on this page is 500–5,000 kg, and the useful question is what the heaviest routine load will be — not what the heaviest conceivable load might be. Specifying for the exceptional load is how a goods lift ends up with a safety case and a structural requirement that the building never needed.

7. Delivery, installation and commissioning

A screw lift is a mechanical installation with an electrical connection and a document trail. The sequence below is the order the work happens in, with this page's own figures attached where they exist and everything else marked as a question to put to the supplier.

Step 1 · Enquiry

Send the site data, not just the load

The four checks in section 4, the number of stops, the floor-to-floor heights and how the lift will be used. This page's commercial line is a minimum order quantity of one set, so there is no volume minimum to clear before the conversation starts.

Step 2 · Configuration

Fix the load, the speed, the stops and the doors

Rated load inside the 500–5,000 kg band, travel within the 15 m limit, stop count between 2 and 10, door type automatic centre or side opening, and the AC or DC decision. Speed is not a choice: 0.15 m/s is what the sheet specifies.

Step 3 · Quotation

Compare the documented scope, not the headline number

The price band published on this page is USD 20,000–30,000 per set, against payment terms of TT or LC at sight. What the band does not tell you is what is inside it, so the quotation has to state freight, unloading, installation, commissioning and local approval separately.

Step 4 · Production

45 days as published

This page lists a delivery time of 45 days. Confirm whether that is from order or from drawing approval, and what has to be signed off before production starts — the shaft drawing is the usual gate.

Step 5 · Packing and freight

Export non-fumigation wood box

As stated on the page. Because the screw column is the longest component, the packing list and the length of the longest crate are the two things the site needs before the container is booked — they decide the route in and the unloading method.

Step 6 · Site preparation

Shaft, structure, opening and supply

This is where a screw lift differs from a hydraulic one: there is no plant room to build and no oil line to route, but the shaft has to be true, the drive has to be carried at the top of the run, and the isolator has to be where the shaft entrance is. The exact pit and overhead figures must come from the supplier's drawing, because this page does not publish them.

Step 7 · Installation

Column, rails, car, doors, then drive

Mechanical work in the shaft first, then the drive and the wiring, then the doors and landing fixtures. Ask which parts of this are inside the quoted price and which are site work, because the split differs between suppliers and it is the usual source of a mid-project cost.

Step 8 · Commissioning

Levelling, overload setting and the safety devices

The microprocessor controller is configured here, which is where levelling accuracy and fault reporting are set. The overload protection has to be set against your rated load, and the emergency stop, safety gear and landing interlocks have to be demonstrated working before handover.

Step 9 · Handover

Documents, training and the maintenance schedule

The page describes the machine as low maintenance but publishes no interval, so the schedule has to be issued at handover rather than assumed. Ask for it with the drawings, the wiring diagram, the test record and the emergency release procedure. That set is also what a local inspector will ask for.

Put four things in the contract rather than discover them on site: who does the shaft work; the pit and overhead figures, written into the order acknowledgement; the electrical split between the site electrician and the installer; and the maintenance interval with the spares position for the nut assembly, which is the wear item specific to this drive.

8. Screw drive elevator FAQ

Ten questions that come up in enquiries for this machine. Every answer is tied to what this page states, and where the page is silent the answer says so.

It is a lift whose car or platform is carried by a threaded steel shaft standing the height of the travel. The motor turns a nut that is threaded onto the shaft, and the nut climbs the shaft, taking the car with it. There are no ropes, no counterweight and no hydraulic ram. Because the load sits on a thread, the car holds its position when the motor stops. This page specifies one such machine: screw drive, 500–5,000 kg, 0.15 m/s, up to 15 m of travel, 2–10 stops.

The concern you will find online is real as a question about long columns, alignment and thread wear — and this page offers up to 15 m of travel and 2–10 stops, so it is not being sold as a two-floor-only product. What this page does not contain is the evidence: it names ISO 9001 (a manufacturing quality certification) and no lift safety standard. So the answer is not yes or no. Ask for the build or test standard, the safety gear certificate, the column figures at your travel height and the local requirement, and treat those documents — not the specification page — as the basis for a multi-floor decision.

Because there is no machine room and no hydraulic plant to find space for: no oil tank, no pump unit and no cylinder to anchor below the shaft, so an existing building does not have to give up a room or floor area. This page's own text lists no machine room as a property of the drive and lists both indoor and outdoor mounting. The parts that still have to fit are the shaft itself, the longest section of the screw column and the electrical supply.

This page states a rated load of 500–5,000 kg, selectable. Five tonnes is machinery, pallets and bulk stock; 500 kg is a person and a load. The overload protection is part of the configuration, so the setting should match the load you actually specify rather than the top of the band — and where the top of the band is selected, expect the local authority to ask whether the installation is a goods lift or a passenger lift.

0.15 m/s, which is about 9 m per minute or 30 ft per minute. A 3 m floor-to-floor run takes roughly twenty seconds of travel, plus door time; a full 15 m of travel takes roughly two minutes. For goods movement that is irrelevant. For a lift where people queue, it is the disqualifying figure — and it is not adjustable, because the speed follows from the drive.

No machine room: the drive is mounted at the top of the shaft run, and this page's own text confirms there is no machine room requirement. On the pit, be careful. The page's descriptive text mentions a pitless retrofit as possible, but the parameter tables on the same page state no pit depth and no overhead clearance at all. Two different statements, and no number in either. Get the pit and overhead figures for your configuration in writing before ordering.

The parameter table says AC or DC and nothing further. The page's own descriptive table narrows the AC option to 220–380 V AC and marks DC as optional. Nothing on the page states the running current, the protective device or the DC arrangement, so those come from the supplier. Ask your electrician for the site voltage, phase and available capacity first, then have the supplier confirm the motor and protection to match.

This page describes the machine as low maintenance. That is as far as it goes: no interval, no consumable list and no service checklist are published. The items that matter on this drive type are the screw thread, the nut assembly, lubrication and alignment, plus the routine checks on the safety gear and the landing interlocks. Ask for the schedule in months or cycles and for the spares position on the nut assembly, which is the part specific to this mechanism.

This page's own text lists indoor or outdoor installation, and lists a weather-resistant model in the same family. The drive type suits it: there is no hydraulic fluid to freeze and no hose to weather. Outdoors, the shaft becomes an enclosure, the drive needs its own weather protection, and the landing thresholds have to shed water. Confirm the enclosure specification and the corrosion protection for the frame, fixings and rails.

This page publishes USD 20,000–30,000 per set, with a minimum order quantity of one set, a 45-day delivery time, payment terms of TT or LC at sight, and export non-fumigation wood box packing. Treat the range as a band that moves with the load, the travel, the stop count, the door type and the finish — and treat the scope boundaries as the part to pin down, because the price band alone does not say whether freight, installation and commissioning are inside it.

9. What a quotation for this lift needs from you

A screw drive quotation is only as good as the site information behind it. Nine items cover it: work through the list before you send the enquiry and the price returns as a configuration rather than a band to interpret.

Send these with your enquiry 0 of 9

Rated load and what the heaviest routine load will actually be
Number of stops and each floor-to-floor height
Travel height, checked against the 15 m limit on this page
Shaft plan size and the clear opening available at each landing
Indoor or outdoor position, plus the enclosure and drainage arrangement
Electrical supply: voltage, phase, frequency and available capacity, from your electrician
Door preference: automatic centre or side opening, and what has to pass through it
Delivery address and site access, including the widest and lowest point on the route in
Local requirement: what your authority will ask for, and in which language

What the answer should contain

The pit depth and overhead clearance for your configuration, in writing — the two figures this page does not publish.
The confirmed rated load, travel, stop count and door type, on the machine plate as well as the quotation.
The electrical data: running current, starting current and the recommended protective device.
The build or test standard, and whichever certificate or declaration goes with it.
The maintenance schedule, the spares position for the nut assembly, and the warranty term in writing.
Scope boundaries: freight, unloading, installation, commissioning, local approval and who does the shaft work.

Safety Features:	Emergency Stop, Overload Protection, Safety Gear	Power Supply:	AC or DC
Speed:	0.15 M/S	Drive System:	Screw Drive
Capacity:	500-5000 Kg	Maintenance:	Low Maintenance
Control System:	Microprocessor-based	Travel Height:	Up to 15 M
Highlight:	Emergency Stop Screw Drive Elevator,Screw Drive Elevator 5000Kg,5000Kg Screw Driven Lift

Heavy-Duty Screw Drive Elevator – 5000 kg Capacity, Emergency Stop