A framework agreement with a CNC subcontractor — parts "on call" with no downtime

The machine stops at 6:20, the spare part is unavailable from the manufacturer, and the nearest delivery date is three weeks away. Maintenance calls a workshop, sends the drawing, waits for a quote, negotiates the date — and only then does machining start. A proven CNC subcontractor bound by a framework agreement shortens that path to one phone call and a confirmed date, because all the arrangements were made earlier.

In this post we show how framework cooperation differs from ad hoc orders, what exactly to write into the agreement and who this model makes sense for. No legal jargon — we look at the framework from the production side, through the eyes of maintenance and purchasing.

Ad hoc orders vs a CNC subcontractor on a framework agreement

With ad hoc work, every order is treated as a new enquiry. The supplier quotes from scratch, asks about material and tolerances, and sets the date according to the current machine load. For planned purchases that is no problem. In a breakdown, every day of such e-mail exchanges is hours of line downtime.

A framework agreement is not a commitment to a specific volume. It is a set of rules agreed in advance: rates or the mechanism for calculating them, the procedure for placing orders, response time, known materials and stored documentation. An order under the framework does not open negotiations — it triggers a ready, rehearsed path.

In practice, three elements make the difference:

• Queue priority — an emergency request from a regular partner enters the production plan on defined rules, not at the end of the enquiry list.
• Known materials — the supplier knows what grades your parts are made of and can keep the most common bars or plates in its own store.
• Stored documentation — drawings, models, machining programs and corrections after the first piece stay with the supplier; the next order is a drawing number, a quantity and a date.

What it changes in a breakdown

It shows best on a timeline. In ad hoc mode: finding a supplier, sending documentation, quoting, approval, material purchase, programming, machining. Indicatively several days before anyone switches on a spindle. In framework mode: a phone call with a drawing number, a confirmed date, machining from a proven program on material that is often already on the shelf. The difference can amount to several days of downtime — and that is usually a multiple of the value of the part itself.

An example from maintenance practice: a conveyor drive shaft breaks; the design is simple, but the line manufacturer sells it only as part of a set with a lead time counted in weeks. If the shaft drawing and the machining program are already with the subcontractor and the material is in stock, a new piece can come off the lathe the same or the next working day — indicatively, depending on workload. Without a framework agreement, the same shaft can wait a week just for the decision on who will make it and for how much.

The framework also puts less obvious things in order: who on the customer's side may trigger the urgent mode, how quality acceptance of an emergency part works, and what happens when the drawing does not exist and the part must be reconstructed from a damaged piece. The full tactics of shortening downtime — organisational ones included — we describe in the post on how to cut downtime after a machine breakdown, and ongoing technical support is provided by our maintenance service.

What to agree in a framework agreement — a checklist

A good framework agreement is short but specific. Before signing, walk through this list:

1. Scope of technologies and sizes: turning, milling, grinding, maximum part dimensions.
2. Ordering procedure: who places orders, through which channel, what counts as confirmation of acceptance.
3. Response time: how quickly the supplier confirms a date for a standard and for an emergency request.
4. Definition of emergency mode: what qualifies for priority and on what terms it may be used.
5. Pricing mechanism: rates for repeat items, the method of quoting new parts.
6. Materials: which grades the supplier keeps for your parts and who covers the cost of the stock.
7. Documentation: where it is stored, who manages revisions, confidentiality rules or an NDA.
8. Quality control: what measurements and documents accompany part acceptance.
9. Settlement: payment terms, collective invoices per period instead of single ones.
10. Term of the agreement and an annual review of the conditions.

Not every item has to go into the formal contract — some are enough to write down as a working annex. What matters is that both sides understand the rules the same way before the phone rings at 6:20.

Ad hoc or framework — a comparison

Who a framework agreement makes sense for

The framework pays for itself wherever parts are ordered regularly or the cost of downtime is high:

• production plants where an hour of line standstill costs more than many a spare part,
• companies without their own toolroom, having wear parts made: shafts, bushings, guides, wheels,
• maintenance departments running older machines for which the manufacturer no longer supplies parts,
• machine designers and builders ordering repeat series from a regular partner.

When does a framework make no sense? For a one-off project or a few parts a year, ad hoc orders are enough. It is worth, however, directing even the first jobs to a company with which moving to framework cooperation will be possible — we collected the selection criteria in the post on how to choose a CNC machining company. And what the road from the first enquiry to permanent cooperation looks like, we describe step by step in the piece on working with a CNC subcontractor.

Nomatec — a brand of Adreams, based in Zbąszyń, Poland and operating since 2015 — runs this model of cooperation with manufacturing companies: rules, rates and documentation agreed once, then a fast response to every request. We describe the details of the model on the B2B cooperation page.

How to roll out framework cooperation — from pilot to standing rules

A framework agreement does not have to be signed blind. A proven rollout scenario spreads the risk over stages:

1. Pilot: order two or three typical parts ad hoc and assess quality, communication and on-time delivery.
2. Critical parts list: write down the parts whose absence stops production — drawing numbers, materials, typical quantities and whether up-to-date documentation exists.
3. Documentation handover: drawings and models go to the supplier, who confirms feasibility and proposes rates for repeat items.
4. Agreeing the rules: response time, definition of emergency mode, request channel, scope of quality control and settlement method.
5. Review after the first quarter: confronting the provisions with practice and correcting what does not work.

Two mistakes most often spoil the rollout. First: the critical parts list is drawn up by purchasing without maintenance — and it lacks precisely the items that really stop the line. Second: nobody updates drawing revisions at the supplier, so after a year the framework produces parts to outdated documentation. One rule prevents both problems: the framework has an owner on each side, named in person.

Summary

A framework agreement is not bureaucracy — it is a path prepared in advance for the day the machine stops. Queue priority, known materials and stored documentation turn a purchasing process of several days into one phone call. The earlier these rules are created, the cheaper the first serious downtime will be.

Want to see what such cooperation would look like for you? Send a drawing or describe your machine park via the contact form — you will receive a quote for the first part within 48 hours, and along the way we will propose framework terms for the future.