Two kinds of stock, doing two different jobs
A workshop shelf holds two categories of item and they should be planned separately. The first is the items that keep machines working: filters, seals, hoses, fasteners, wear parts and the handful of sensors that fail often enough to be predictable. These turn over, they are cheap relative to the machine, and the point of holding them is that a machine does not wait two days for a filter.
The second category is the items held against a specific event: a spare pump for a machine that cannot be idle, a final drive for a fleet with no redundancy, an injector set for a model the workshop sees constantly. These do not turn over on a schedule. They sit on the shelf against the day they are needed, and the correct question about them is not turnover but downtime avoided.
Mixing the two in one budget produces the classic pattern in which a workshop is simultaneously overstocked on slow-moving expensive assemblies and out of stock on cheap consumables.
What belongs on the shelf
Four tests decide whether an item earns shelf space. Does it wear out on a predictable interval? Does its failure stop the machine? Is it cheap enough that holding it costs less than a delay? And is it small enough to store without a forklift? Items that pass all four belong on the shelf in quantity. Items that pass two or three need a decision rather than a default.
Vendor-managed consumables are the easy case. Seals, filters, O-rings and fasteners are cheap, they cross-reference across many models, and having them on site is almost always cheaper than not having them.
What should stay available-to-order
Everything that is expensive, slow-moving and model-specific should normally stay on somebody else's shelf. Large hydraulic assemblies, complete final drives, turbochargers and control units fit this description: costly to hold, high risk of sitting, and quick to source from a distributor who specializes in them.
The distinction to get right is between on-the-shelf stock and available-to-order stock, because they behave differently. Shelf stock ships now. Available-to-order numbers are sourced through original supply channels and carry a lead time that has to be planned into a repair schedule. Treating the second as if it were the first is how a two-day repair becomes a two-week one.
Reviewing the list as the fleet changes
A stock list is a statement about the machines you expect to see, so it decays as soon as the fleet changes. When machines are sold, retired or replaced by a different brand, the slow-moving items behind them become dead capital that quietly occupies shelf space and budget.
A short review each quarter is enough. List the items that have not moved, check the machines that justify them still exist in the fleet, and decide: keep, reduce, or release. The released budget is usually better spent on the consumables that ran out last month.
Guangzhou Shenyue Machinery Technology Co., Ltd. supplies workshops, traders, rental fleets and contractors from Guangzhou, and has done since 2007. Four warehouses hold 3,000+ part types on the shelf, with 100,000+ part numbers available to order, which is the structure most workshops end up building for themselves in miniature: fast movers held locally, slow movers sourced on demand.
Where each category belongs
| Category | Best held |
|---|---|
| Filters, seals, O-rings, fasteners | On the shelf. Cheap, cross-referenced and frequently needed. |
| Hoses, wear pads, cutting edges | On the shelf in the sizes actually used, not in every size. |
| Sensors, relays, solenoid valves | A small buffer on the shelf; the rest available to order. |
| Injectors, turbochargers, control units | Available to order, unless a specific machine cannot be idle. |
| Main pumps, travel motors, final drives | Available to order. Held only for machines with no redundancy. |
| Undercarriage sets | Planned against wear measurement, ordered per machine. |
Frequently asked
How much stock should a workshop actually hold?
Enough to cover the failure modes you see weekly, and nothing that only appears yearly unless a specific machine cannot be idle. A useful test is to count how often a part sat on the shelf for more than a year before being used: those lines are occupying the budget that the items you ran out of needed.
Is it worth holding a spare pump or final drive?
For a single-machine operation, yes, if downtime genuinely costs more than the assembly. For a fleet with redundant units, usually not: it is cheaper to pay for a fast source and a planned replacement than to hold a costly assembly against an event that may not arrive for years.
How do I compare a local stock price with an imported one?
Bring both to a landed basis, including freight, duty and the cost of the capital tied up in holding the stock. A locally held part that costs twenty percent more but removes a two-week delay is frequently the cheaper decision, and it is the one most often missed when only the unit price is compared.
Send the machine model, serial number, the part numbers you have and the quantity. That is all we need to quote and confirm fitment before payment.
Request a quote