Economical 3-Axis Painter Lift Platforms for a New Steel Fabrication Plant in Saudi Arabia

How CoatTech turned a fixed USD 15,000-per-unit budget into a cost-engineered two-platform rail system — without giving up reach, load capacity or operator safety.

PROJECT AT A GLANCE

01  PROJECT OVERVIEW

A steel fabrication group setting up a new production facility in Saudi Arabia approached CoatTech for two rail-mounted painter lift platforms for its industrial paint room. The client had already received a quotation for a fully customised three-axis platform system, and came to us with a single, very clear commercial objective: find a more economical solution without compromising operator safety, working reach or paint quality.

The target was stated up front — USD 15,000 per platform, USD 30,000 for the pair. That single number reframed the whole exercise. It was no longer a question of how much capability we could engineer into a machine, but of which engineering decisions actually consume budget, and which of them the client was willing to revisit.

The three cost drivers we identified on day one:  

· Long travel: a 25 m longitudinal travel — roughly two and a half times the stroke of a standard 3-axis booth platform.

· Extension under load: a 4,000 mm telescopic extension carrying 225 kg, which forces a reinforced beam, wider gauge and a heavier drive.

· Explosion protection: the hazardous-area classification of the paint room, which decides whether every motor, gearbox, cabinet and sensor must be flameproof-certified.

Of the three, only the third turned out to be genuinely open — and the client's own paint-booth designer held the answer.

02  CUSTOMER REQUIREMENTS

Core parameters as received in the enquiry:

The client also asked for something less common in an RFQ: an explicit statement of the limitations of any lower-cost alternative we proposed, and confirmation of whether the price covers every rail, drive, control and accessory needed for a complete operating system. That is the mark of a buyer comparing several suppliers — and of a buyer who has already been burned by an incomplete scope.

03  ENGINEERING CHALLENGES

3.1  A budget that predates the specification

The stated budget and the stated specification were not written by the same hand. Twenty-five metres of guided travel, a four-metre telescopic reach and a 225 kg working load are all individually routine; combined into a single machine and then duplicated, they sit well above entry-level pricing. Our first job was not to discount — it was to show the client exactly where the money goes, so that any reduction became his decision rather than our compromise.

3.2  The extension-versus-load curve

A telescopic platform does not carry its full rated load at full reach. The further the platform extends, the greater the overturning moment at the guide interface, and the stronger — and heavier, and costlier — the beam and drive must be. The client's requirement of 225 kg 'subject to confirmation of the rated-load definition' was the opening we needed: rather than guess, we priced both interpretations and let him choose.

3.3  Hazardous area — confirmed last, but priced first

In a solvent-based paint room, Zone 1 or Zone 2 classification is the norm, and it changes almost every electrical item on the machine. Yet at enquiry stage the booth itself was still being designed, so no classification existed. Quoting a flameproof machine that later turns out to be unnecessary wastes the client's money; quoting a standard machine that later needs upgrading wastes everyone's time.

3.4  One rail or two?

Because the platforms must reach both sides of enclosures, the two units may well end up on opposite booth walls. If so, a shared rail is physically impossible and the cheaper option disappears. The layout answer had to come from the client's drawings — but we priced both arrangements immediately so the comparison was ready the moment he knew.

04  COATTECH'S RESPONSE — COST ENGINEERING, NOT DISCOUNTING

Our approach was to keep the machine's capability intact and attack cost at the four points where it is actually created: classification, rail quantity, load definition and component standardisation.

4.1  Electrical configuration — standard industrial, with an upgrade path

On the client's instruction we based the initial proposal on a non-hazardous-area configuration, using standard industrial TEFC motors, sealed gearboxes, an IP54 control cabinet, in-basket and ground-level controls, and a full safety package — overload cut-out, mechanical anti-fall lock on the Z-axis, holding brakes, limit switches, emergency descent and interlocked access gate.

Critically, we did not simply drop the subject. We listed every component that would have to change if the booth designer later confirms a hazardous area, and priced an optional “Ex-ready” provision package:

The Ex-ready package — oversized gland entries, spare cabinet space, earthing busbar and prepared cable routing — turns a future upgrade into a component swap rather than a rebuild. We also stated plainly what the client would otherwise discover later: upgrading after manufacture costs far more than building to Ex standard from the outset.