Product Overview

Rock buckets and grab buckets are the working tools that hang off a crane or an excavator and meet the ground first. We build both families — a rock bucket for digging and loading, a grab bucket for rehandling material that has already been loosened — in sizes matched to the carrier rather than taken from a shelf.

Sizes follow the machine. We regularly build a 1.6 m³ grab bucket for KOBELCO units, a 2.15 m³ bucket for VOLVO machines and a 5 m³ bucket for HITACHI-class equipment. Treat those as examples from our construction machinery spare parts work rather than a fixed range: the volume that suits a machine depends on what it can lift at working radius and how heavy the material is, so each bucket is sized against the carrier it will serve.

Every bucket is built to a machine reference rather than guessed, which is what makes older carriers, one-off machines and mixed fleets workable. Where a drawing survives we build from it; where it does not, the bucket currently on the machine becomes the reference.

The duty is hard on steel, so the build has to suit the job — a bucket that is right for abrasive rock is not the same as one built for soft spoil. Tell us what you are loading and we will say what the wear package should look like.

If you already buy crane spare parts from us, tell us which machine the bucket is for and we will check it against the records we hold for you.

Bucket Types & Duty Matching

• Rock bucket — the digging tool. An open-front scoop with a toothed cutting edge, built to bite into broken rock and carry it clear. Few crane spare parts take this much direct abrasion; the bucket is the item that meets the rock first, and the body, edge and side walls all take punishment.
• Grab bucket — the rehandling tool. It closes on material that is already loose: stockpiled aggregate, broken stone in a barge hold, spoil waiting at the edge of a trench. It is the tool you reach for once the digging is done and the job is moving volume.
• Match volume to the material, not to the machine alone. Wet, dense rock loads a bucket far heavier than dry overburden, so a machine that carries a large scoop in soil may need a smaller one in saturated stone. Tell us what you are loading and we will size accordingly.
• The carrier sets the limit. Lifting capacity at working radius, counterweight and linkage decide what can be carried safely — the same load discipline that governs how crane boom parts are matched to a machine. An oversized bucket slows the cycle and works the machine harder than it needs to.
• Wear duty is worth stating up front. Machines on rock and demolition duty wear a bucket out faster than machines on gravel and soil. If your heavy equipment spare parts spend is being eaten by bucket repairs, say so when you enquire and we will talk through the wear package.
• One size does not cover a fleet. Two carriers of the same class can take different buckets once linkage and pin sizes are measured, which is why we check each machine separately instead of shipping a nominal size.

Build & Wear Specification

Mounting & Fit Confirmation

1. Start with the machine. Note the brand, model and serial number. On a used crawler crane the serial number is often the fastest way to pin down which linkage and pin arrangement the machine was built with.
2. Measure the old bucket. Pin diameter, the gap between the mounting ears and the hole centres are the three numbers that decide whether a replacement fits.
3. Photograph it on and off the machine. A picture of the bucket hanging on the linkage tells us more about the mounting than a page of notes; if the linkage or the hydraulic crane parts around it are worn, photograph those as well.
4. Send the drawing if one survives. An original drawing settles most questions before they are asked, and we can work from a scan or a clear phone photograph of it.
5. List anything else the machine needs. If the carrier is also due for crawler crane parts, put those references in the same message so the whole assembly is checked in one pass rather than two.
6. Approve the design before production. Our engineers confirm the mounting detail with you, and nothing is cut until you have confirmed it.

Working Conditions & Applications

• Quarry and aggregate yards. Loading blasted rock into trucks after a shot, where the ground is sharp, mixed and unforgiving.
• Mining hard gravel mixed with hard soil. Ground that is neither clean rock nor clean soil, where the bucket has to cut and lift at the same time.
• Sub-hard stone and flint. Abrasive material that dulls a plain edge quickly; a toothed edge and side ribs earn their keep here.
• Demolition and site clearance. Rehandling broken concrete and mixed debris where the load is irregular and the operator cannot see the bucket's edge.
• Port, yard and barge work. A grab bucket unloading bulk cargo or scrap from a hold into trucks, where reach matters as much as bite.
• Used crawler crane rebuilds. When a used crawler crane comes back into service, the bucket is usually the first item replaced — the machine is sound but the tool is worn out, and a new bucket gets it earning again.
• Fleets, workshops and resellers. Rental companies, contractors and repair shops buying heavy equipment spare parts for several machines at once, where two buckets of the same size rarely suit two different carriers. If the enquiry also covers crawler crane parts, send the whole list and we will check each machine separately.

Drawing-Based Custom Builds

1. Send what you have. A CAD file, a scanned drawing, a dimensioned sketch or a measured outline of the old bucket all work as a starting point.
2. State the machine and the job. Which carrier it goes on, what will be loaded, and whether the bucket will spend its life in rock, gravel or mixed debris.
3. Engineers review the drawing. We check mounting geometry, plate sizes and the wear package against the job — the same review we run on any construction machinery spare parts drawing before a build starts.
4. Agree the wear package. Teeth, side ribs and edge protection can be specified to the duty; on abrasive rock it is worth over-specifying rather than rebuilding the bucket inside a year.
5. Build against the drawing. The bucket is made to the agreed design, with plate sizes, weld detail and mounting geometry fixed before the first cut.
6. Approve it before dispatch. Photographs of the finished bucket go to you for sign-off before it is packed.

Ordering & Delivery

Orders start at one piece, so a single replacement for a machine that is standing is as straightforward as a fleet order. Payment is by T/T, Western Union or as agreed.

Most parts are in stock; delivery usually takes 7-20 days, according to the quantity and the specification. A bucket built to a drawing is scheduled with you before work starts. If a machine is down and you need the bucket quickly, tell us the date you need it and we will confirm what is achievable — priority shipping options such as air freight can be arranged for critical orders.

Volume pricing is available, so ask for a quote on the quantity you have in mind, whether that is several buckets or a mixed list. Adding the crane boom parts for the same machine to the order is routine. Putting a few hydraulic crane parts on the same list is just as normal, and it keeps everything on one set of documents.

We load from Shanghai, Dalian or another port that suits your route, and work on EXW, FOB, CFR or CIF terms. Buckets are palletised and blocked for container or flat-rack loading; tell us the destination and we will confirm the packing that fits.

Warranty is 2500 working hours or one year, whichever comes first. As crane parts suppliers we have been supplying fleets, contractors, workshops and resellers since 2017, and the same terms apply whether you are buying a single bucket or a project list.

Technical Support & Model Matching

Not sure which part matches your machine? Send us the model, serial number and the original part number — or a photo and key dimensions — and our engineers will confirm the correct item and check availability before you commit. They have spent more than ten years in construction machinery and can talk you through fault-finding, installation and commissioning by phone, email or video. We also trace parts for discontinued and legacy models. Support runs 24/7 from Shenyang, China, where we have been supplying buyers since 2017.

FAQ