Most crane quotations get revised at least once, and the usual reason is not price negotiation — it is that the original enquiry did not carry enough information to price the right machine. Here is what lets us quote accurately the first time.
The figures that set the design
1. Capacity
The load the crane must lift, in tonnes. Tell us the safe working load you need at the hook, not the weight of your heaviest component — lifting tackle, spreader beams and slings come out of the same allowance.
2. Span
Centre to centre of the runway rails, in metres. If the building is not built yet, tell us the column spacing you are working to and we will confirm what it means for the crane.
3. Lift height
Floor to the highest hook position required, in metres. Separately, the clear height under the roof structure — that constraint often decides whether the requirement can be met with a single girder crane.
4. Duty class
If you know it, state it. If not, tell us the cycle instead: lifts per shift, shifts per day, whether it is seasonal, and roughly how heavy a typical lift is against the rating. We will work the class out.
5. Quantity
Two identical cranes are not simply twice the cost of one. Tell us the full requirement even if it will be ordered in phases.
6. Site location
Where the crane will be installed — plant, city and country. This sets despatch, packing and, for export orders, inspection requirements.
7. Power supply
Voltage, phase and frequency available at site. For long travel distances, tell us whether you want conductor bar, cable drag chain or festoon — or ask us to advise, since site conditions usually decide it.
8. Structure: existing or new
This is the question most often left out, and it changes the design more than any other.
- New building — we can size the crane and give you the wheel loads to design the structure around.
- Existing building — we need the wheel load the gantry girder is rated for, and the rail section already installed. Without it, a crane can be designed that your structure cannot carry.
What also helps, if you have it
- A general arrangement drawing of the bay
- Any tender or specification document you are working to
- Environment notes: dust, moisture, fibre, heat, corrosive atmosphere
- Attachments you need — grab, magnet, ladle, spreader
- Whether you want supply only, or erection and commissioning as well
What happens next
Send what you have. If something essential is missing we will ask rather than guess, and where a requirement looks under-specified for the work described, we will say so before quoting — it is cheaper to resolve at enquiry stage than after the girder is fabricated.
You can send the figures through the quotation request form, or email a drawing or tender document directly and we will work from that.