How to Identify a Tower Crane Spare Part Without a Part Number

Resources · Spare parts sourcing · Xuzhou Runxi Machinery

Most parts enquiries arrive without a part number — the nameplate is worn off, the manual was lost, or the part was replaced years ago. That is not a problem. What matters is sending the right information the first time, so the quote is for the correct part.

What to send

  1. Photos from three angles — overall, the mounting face or shaft, and the marking area. Daylight, in focus, nothing covering the part.
  2. Key measurements — overall length, bore or shaft diameter, bolt hole spacing, thread size.
  3. Any marking on the part — cast numbers, stamped codes, brand names, rating plates. Even a partial code narrows the search.
  4. The crane model and year — the same function can use different parts across model generations.
  5. Quantity and urgency — one-off repair or stock replenishment changes how we quote.

OEM replacement versus generic

For load-bearing and safety-related items — limiters, brakes, rope, slewing bolts — use the original specification or an OEM replacement. For brackets, covers, rollers and general hardware, a correctly dimensioned equivalent is usually fine and costs less. We say clearly which one we are quoting, so you can decide.

Parts we supply most often

Control boards, master switches, guide pulleys, base legs, brake pads and limit switches, plus elevator parts, standard sections, wall ties, slewing mechanisms, hoisting winches, trolley units, control cabinets, wire ropes, gears and rollers.

A photo of the failed part in place, before removal, is often more useful than a perfect studio photo of the part alone — it shows how it is mounted and what it connects to.

Send the model, photos and measurements through the contact form or WhatsApp, and we will confirm availability and shipping from China.

Tower Crane Spare Parts   Send a Part Enquiry

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