A cleaning budget rarely dies on the machine. It dies on the labour line. The specification reads well, and the schedule then shows two operators losing an hour to refills, to walking between a bay and a water point, or to re-passing a surface because nobody wrote down what actually removed the deposit. Before comparing cleaning offers for lathe exteriors, put the labour question ahead of the performance question. Five answers decide whether the job costs one operator-hour or three.
1. How far does the cleaning have to travel?
On most shops the machines stay put and the cleaning moves. A fixed station suits a shop where the lathes sit in one position, the machine can be parked beside the work, and a single water and power point serves every machine in the group. Where the cleaning travels along a row, crosses a walkway, goes over a kerb or moves between an indoor bay and an outdoor pad, travel time becomes the number to compare - not the output figure.
PowerDe separates its industrial steam cleaning equipment by how the machine travels: driving-style units for indoor garages and narrow outdoor spaces, hand-pushed units, and fixed units that stay in one position. For a lathe row, walk the route with a tape measure and record the narrowest gap, the door widths, the kerbs and the distance from the nearest water point to the farthest machine. An offer that cannot answer that route has been priced against a floor plan you do not own.
2. How much of the job is preparation rather than cleaning?
Preparation is the stage most estimates forget. On a lathe exterior it means covering the chuck, the ways, the turret, the drive belts, the terminal boxes and any open electrical enclosure before a lance comes near, letting the machine cool, and laying containment for the run-off. That work is charged per machine rather than per square metre, and it repeats on every cycle.
Ask which preparation the method behind an offer assumes. A method that needs every opening masked on every machine costs more labour than the cleaning itself, and the same job with fewer, better-chosen covers costs less. Whoever quotes you should be willing to write the preparation assumption into the quotation so it can be held to.
3. Who has to be present, and with what training?
Some cleaning is one operator with a wand. Work with hot surfaces and a live lance usually needs a second pair of hands for hose management, plus a written method that states what may be aimed at and what may not. Ask what training the supplier provides, how long handover takes, and how the method survives a shift change or a new starter.
This is also where a supplier's wider engineering support pays. Shenzhen PowerDe Automation Precision Equipment presents itself as an intelligent cleaning equipment manufacturer that also handles customized configurations and technical support, so a shop planning a recurring schedule across several machines can ask for the training content and the service terms while the quotation is still open, rather than after delivery.
4. How much of the shift is refilling, charging and waiting?
Waiting, not working, is where labour often goes: a tank that runs dry mid-job, a battery that has to charge before the next machine, a heater that takes time to come back up after a break. For a fixed unit the published supply, tank and inlet details tell the electrician and the plumber what to confirm before delivery. For a battery variant, run time and charge time are not published on every listing, so they belong in the enquiry as a written question rather than as an assumption carried onto your own wage bill.
Then measure the refill distance on your own route rather than in a brochure. A tank that looks generous is worth little if the nearest tap is forty metres away and the operator walks it twice per machine.
5. How much rework does the first pass create?
Rework is the most expensive labour in cleaning and the least measured. A surface is not clean because someone sprayed it; it is clean against a standard a crew member can check without a gauge. Decide before any trial what clean means on a lathe exterior: no visible film on a guard, no sludge in the corners of the bed pan, no oil standing on the motor housing. Then record four variables on the trial - mode used, dwell time, nozzle distance and angle, number of passes - and keep the settings that passed.
A supplier who cannot discuss dwell, distance and pass count is selling a machine rather than a process. A supplier who can lets you compare two offers on one basis: the recorded settings and the minutes they cost.
Turn the five answers into one number
After one timed clean, add the answers up as crew-minutes per lathe per cycle: route travel, preparation, operator count and skill, waiting and refilling, rework. Put that figure against the frequency the shop actually runs. Two machines quoted at the same price can differ by a full shift a month once those minutes are counted, and the difference is settled before the order, not after the delivery.
Where no published configuration matches the layout or the schedule you measured, send the layout, the lathe list, the deposit being removed and the timed trial record with the enquiry. A configuration agreed against that record is a labour estimate. A configuration chosen from a catalogue is a hope.
