Three questions decide whether a first order with a Chinese gear motor factory happens at all: what is the minimum order, how long does it take, and can I test one before committing. Buyers ask them in that order, and the honest answers are more conditional than most suppliers admit in a catalogue.
This guide explains where an AC gear motor minimum order quantity actually comes from, how a lead time is built up, and what a realistic sample arrangement looks like. It is written for buyers placing a first order in the 15W to 3.7kW compact range, and it deliberately separates what is a factory policy from what is a consequence of the product structure, because the second category is the one you can negotiate with engineering choices rather than with pressure.
A gear motor is not a catalogue item pulled off a shelf in most cases. It is an assembly of a motor and a gearbox, and both halves carry setup costs that do not scale down to a single unit.
That is why a factory can quote a low minimum on one model and a much higher one on the model next to it in the same catalogue. The two units may share a frame, but if one ratio and voltage combination is produced regularly and the other is not, the economics are completely different.
Almost every quoted minimum falls into one of three tiers. Knowing which tier you are in is more useful than arguing about the number, because moving one tier down is usually a design decision, not a negotiation.
| Tier | What it means | Typical minimum | Lead time behaviour |
|---|---|---|---|
| Stocked standard model | A common power, ratio and voltage combination the factory produces routinely | Lowest, often a handful of units | Days, because the unit is in stock or in a running batch |
| Standard model made to order | Catalogue model, but a ratio or voltage variant not currently in stock | Moderate; often a small carton quantity or a minimum batch | Production lead time, typically measured in weeks |
| Customised unit | Non-catalogue shaft, flange, cable, connector, nameplate or winding | Highest, because tooling or dedicated setup is involved | Production plus drawing approval and sample sign-off |
The most common misunderstanding in first enquiries is assuming that “the factory sells 25W gear motors” means every 25W variant is equally available. In practice a 25W unit at 50:1 in 220V single phase may be routine, while the same frame at 200:1 in 110V may be a special. The 25W 4RK page shows the full ratio range from 3:1 to 300:1, and the 90W 5RK frame runs from 3:1 to 500:1. The range is real, but the commercial availability across it is not uniform.
Marketplace and trading listings frequently advertise a one-piece minimum on small gear motors. That figure is genuine in the sense that you can buy one, but it usually describes a different supply chain: a trader reselling from stock, or a factory selling a single sample unit at a sample price with sample-level freight.
Two things follow. First, the unit price at one piece is not the production price and should not be used as the basis for a project budget. Second, a trading listing at one piece does not indicate that the underlying factory will accept a one-piece production order. If your plan is a hundred units a quarter, the useful question is not “what is your minimum” but “which of your standard models are you already producing that I could use”.
For a machine builder who needs small quantities of several variants, the binding constraint is often not total volume but the number of distinct setups. Six ratios at ten pieces each is six setups. The same sixty units arranged as three ratios at twenty pieces each is three setups, and it may be easier to schedule than the first case even though the total is identical.
Practical ways to work within this:
None of these require the supplier to break a policy. They change the shape of the order so that it fits the production structure.
A quoted lead time is a sum, not a single process duration. Understanding the parts tells you which part you can influence and which part you cannot.
| Stage | Typical duration | Who controls it | How to shorten it |
|---|---|---|---|
| Quotation and technical clarification | 1 to 3 working days | Both sides | Send a complete specification on the first enquiry |
| Drawing or nameplate approval | 2 to 5 working days | Buyer | Approve by email in writing; this is the most common silent delay |
| Material and component preparation | 3 to 10 working days | Factory | Choose a voltage and ratio the factory already runs |
| Winding, machining and gear cutting | 5 to 15 working days | Factory | Fewer distinct variants in the order |
| Assembly and run test | 2 to 5 working days | Factory | Accept standard test protocol for standard models |
| Packing and documentation | 1 to 3 working days | Factory | Confirm packaging and label spec early |
| Inland transport and export clearance | 3 to 7 working days | Forwarder | Book the forwarder before production finishes |
For standard models produced routinely, total production lead time on the order of two to four weeks is a realistic expectation, and stock items can ship faster. Customised units add the drawing and sample stages on top, so the difference between a standard and a custom order is frequently measured in weeks, not days. Any quotation that gives a single number without saying whether the unit is stocked or produced is giving you an average of two very different situations. The frame and torque tables are useful here, because a model that appears in the standard table is far more likely to be a stocked or routinely produced combination than one that has to be assembled from spare ratios.
In practice, the causes of delay are repetitive and mostly preventable:
If a date is critical, say so in the enquiry and ask what the factory can commit to in writing. A supplier who will not put a date in writing is telling you something useful.
Sampling is where good buying relationships are made, and where unrealistic expectations cause the most friction. A few principles are worth stating plainly.
Expect to pay for the sample. A sample is a production unit plus individual packing plus express freight, and the freight alone often exceeds the unit price. Factories that advertise free samples are usually building the cost into the production price or offering a token item.
Expect the sample cost to be credited. A common and reasonable arrangement is that the sample cost is refunded or deducted against the first bulk order. Ask for this explicitly; it is a normal request and most suppliers will agree to it in writing.
Use the sample to test the right things. A sample proves the mechanical fit, the wiring, the noise level and the speed under load. It does not prove service life, and treating a two-week bench test as a life test is a category error. The OEM gearmotor buying guide sets out the tests worth running on a sample before release.
Approve by photograph before shipment. For a custom nameplate, a private label or a specific connector, ask for a photograph of the finished unit before it is packed. This one habit prevents most first-order disputes, and it takes the supplier ten minutes.
Our own position, published on the small AC gear reducer motor range, is that sample orders can be arranged for model evaluation and that minimum order levels are low on selected standard models. Those two statements are deliberately conditional: what a specific model’s minimum is depends on whether it is a stocked combination, and the answer belongs in your quotation rather than in a general claim on a web page.
Minimum order quantity, lead time and sample policy are not arbitrary rules; they follow from how gear motors are actually built. Ratios need gear setups, voltage variants need winding setups, and batches need to be batched. The practical consequence for a buyer is that the cheapest route to a small first order is not to negotiate the minimum down but to choose a combination the factory already produces: a common ratio, a standard voltage, a standard nameplate.
If you tell us the quantity, the ratio range and the voltage you need for a first order, we will tell you which of those combinations are routine and which are special, and what each one implies for price and lead time. That conversation is worth having before the enquiry is written, because it usually changes which model gets specified. For the enquiry itself, the gear motor quotation guide lists the eight fields that get an accurate answer in one exchange.
It depends on whether the model is a stocked standard combination or a special. Stocked standard models can be supplied at low quantities, while a non-catalogue ratio, a non-standard voltage or a custom shaft raises the minimum because it requires dedicated setup. Ask for the minimum per specific model rather than in general.
For a model the factory produces routinely, roughly two to four weeks of production lead time is typical, plus inland transport and export clearance. Customised units add drawing approval and sample sign-off, which commonly adds weeks rather than days.
Rarely in a literal sense, because express freight on a single unit often exceeds the unit price. The usual arrangement is a paid sample with the cost credited against the first bulk order. Ask for the credit in writing when you place the sample order.
Reduce the number of distinct setups in the order: consolidate ratios that are close enough for your speed tolerance, standardise on one voltage across models, accept the standard nameplate for the first batch, and release stock in a scheduled sequence rather than as one speculative order.
Because the winding is a different operation with different wire, turns and often a different run capacitor. If 110V is a routine variant for the factory the impact is small; if it is not, the unit has to be scheduled as a special batch.
