Short answer
Most of the questions worth asking when buying an attachment are not about price, because a price difference usually closes inside the first year; the real difference shows up in spare parts availability, service reach and bracket fit. The twelve questions below fall into three groups: does this fit my machine, what happens when it fails, and will I still be able to run it in five years. All of them share one rule: ask for the answers in writing rather than in conversation. A sentence written into a quotation is the only thing to stand on when a disagreement arrives two years later.
Fit: four questions
- Does this attachment fall inside my machine’s operating weight range? The answer should be a range, not "it fits". We covered the tonnage matching rule in its own guide.
- Are my machine’s auxiliary circuit flow and pressure inside the range the attachment asks for? If you do not know your own machine’s figures, find those first; the supplier cannot know your machine.
- Will the bracket be made for my machine, or does it come with a standard one? To which pin diameter, pin spacing and boom end width will it be machined?
- Does the stated operating weight include the bracket and the tool? The catalogue figure is often the bare housing, and building a lifting plan on it will mislead you.
Failure and service: four questions
- Are spare parts in stock, and if not, what is the lead time? "Available" is not an answer; ask for a number of days on the critical parts.
- Which parts wear, and roughly how often are they replaced? We are not asking for a figure to quote back, but knowing which parts change regularly is what builds your stock plan.
- Where is service, and does it come to site? If there is a mobile service, which regions does it cover; if not, where do you send the attachment?
- Who makes the first diagnosis on a failure, and how long does it take? Downtime usually costs more than the part.
The long run: four questions
- How long has this model been in production, and if it is discontinued, how long are spare parts supported?
- What does the warranty cover, what does it not, and in what circumstances does it lapse? Ask for the exclusions in writing, explicitly.
- Does this make have a second hand market? Finding a buyer on the day you sell can be worth more than a discount on the day you buy.
- In which languages are the operating manual and parts catalogue supplied, including mine? An attachment arriving without a manual leaves its service intervals to guesswork.
Ask for the answers in writing, with the quotation
Every one of these questions is answered easily and confidently in a sales conversation. The value lies in getting the answer written into the quotation. Once spare parts lead time, warranty exclusions and bracket dimensions are on paper, the ground for any later disagreement is settled too.
Do and don’t
Do
- Bring your own machine’s flow, pressure and operating weight figures to the meeting.
- Ask for spare parts lead times in days.
- Get bracket dimensions confirmed in writing.
- Ask explicitly for the warranty exclusions; they matter as much as the cover.
- Put two attachments that do the same job side by side using the selector or the technical tables.
Don't
- Do not settle for "it fits"; ask for the range.
- Do not base a lifting plan on the catalogue weight.
- Do not decide on price alone; one year’s downtime easily exceeds the price difference.
- Do not leave the bracket to be sorted later; the bracket is part of the attachment.
- Do not accept delivery without a manual and a parts catalogue.
What the questions actually measure
The real function of these twelve questions is that they show you how the answers are given as much as what they contain. A supplier who gives spare parts lead time in days has thought about that question before.
The reverse holds too: an answer that waves away bracket dimensions with "we will make it to your machine" means the dimensions will be asked for after the order and the delivery will be late.
So ask them not as an examination but to see how prepared the other side is. A prepared supplier will add one or two items you did not ask about, and that is a good sign in itself.