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Miaocheng@changyumech.com
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• ZD05 for 5-8 ton excavators
• ZD20 for 20 ton excavators
• ZD30 for 30 ton excavators
• ZD35 for 35 ton excavators
Buying direct from the factory shortens the supply chain. You talk to the team that makes the product, so technical questions, pricing, and order details get clear answers. This helps distributors and contractors who need stable specifications and repeat supply.
The shell grab unloads through its left and right buckets. Its overall structure is light and durable, which suits daily loading work on construction and industrial sites.
Buyers usually judge a clamshell grab on three points. Each one affects how much material you move per hour.
• High grip rate: the shells hold material firmly while the operator lifts and swings. Less material falls out, so fewer cycles are wasted.
• Strong closing force: hydraulic power drives the shells shut. This helps the bucket grip material that is hard to grab, such as ore.
• High material filling rate: the shells close on a full load. A fuller bucket per cycle means fewer cycles for the same job.
Together, these points help reduce loading time per ton of material.
Weight is the weight of the grab itself. Subtract it from your excavator's lifting capacity at working radius to estimate your usable payload. Need overall dimensions for a model? Ask our team and we will send them.
Check three things before you choose a size:
• Your excavator's lifting capacity at the working radius
• The weight of the grab itself, from 467 kg (ZD05) to 1,805 kg (ZD35)
• The density of your main material
If you are unsure, send us your excavator model and material type. We will recommend a suitable size.
• Grasping capacity: hydraulic drive gives strong gripping force for difficult materials such as ore.
• Efficiency: opening, closing, and lifting can overlap, which raises working efficiency.
• Split-and-close design: it spreads the gripping force evenly across the grab and helps prevent deformation.
• Economical operation: low oil pressure produces high gripping force. This supports safe operation and longer seal and grab life.
If you swap attachments often, you can also review our Hydraulic Quick Hitch Coupler. Ask our team whether it suits your excavator and grab model.
• Earthwork: the grab moves soil and loose spoil with less spillage.
• Sand and gravel: controlled opening drops material accurately into trucks or hoppers.
• Scrap handling: the grab lifts loose and mixed scrap. For other scrap and demolition tasks, you can compare our Hydraulic Peel.
• Road and railway construction: it handles fill and aggregate over long working hours.
Choose a clamshell grab when:
• The material is loose, bulky, or hard to scoop
• You need a controlled drop into a truck, hopper, or barge
• The work is mainly loading rather than digging
Choose a digging bucket when you need to dig compact ground, cut trenches, or shape slopes. See our Digging Bucket for that kind of work. Some contractors keep both attachments, because each one handles a different task.
• 5-8 ton excavator: ZD05, 0.35 m³, 800 mm inner width, 467 kg
• 20 ton excavator: ZD20, 1 m³, 1,000 mm inner width, 1,340 kg
• 30 ton excavator: ZD30, 1.5 m³, 1,160 mm inner width, 1,538 kg
• 35 ton excavator: ZD35, 1.8 m³, 1,400 mm inner width, 1,805 kg
The standard range has no model listed for 8-20 ton machines. If your excavator falls in that range, send us the model and we will advise on a suitable option. Also confirm your machine's hydraulic flow, pressure, and boom setup before you order.
• Excavator brand, model, and tonnage
• Main material to handle, such as ore, sand, gravel, or scrap
• Required model or capacity
• Order quantity
• Destination country or port
Then Contact Changyu Machine by email or WhatsApp. Our team will reply with a quotation and technical advice.
• Ask how the supplier checks fit with your excavator before shipment.
• Request real photos or video of the product, not only catalog images.
• Ask about the steel used for shells and wear parts, and how welds are checked.
• Confirm lead time, packing, and shipping terms in writing.
Standard models do not fit every project. Your excavator brand, boom setup, material, or site conditions may call for changes. Share these details with our team:
• Excavator brand, model, and tonnage
• Mounting connection and pin sizes
• Material type and density
• Required capacity or opening width
• Working conditions, such as abrasive material or long daily operating hours
Our engineers will review your request and tell you what is possible, along with its effect on price and lead time.
Simple habits keep any hydraulic grab bucket in good condition:
• Grease pivot points on a regular schedule
• Check hoses and fittings for leaks and wear
• Inspect shells and edges for wear and cracks
• Keep cylinder rods clean
• Stop work and repair any hydraulic leak at once
Always follow your excavator manual for hydraulic service.
For a 30-ton excavator, choose the ZD30. It has a 1.5 m³ capacity, 1,160 mm inner width, 2,207 mm opening, and weighs 1,538 kg.
Treat tonnage as the starting point. Then check lifting capacity at working radius, material density, and your hydraulic setup. Send us these details and we will confirm the match before you place an order.
Ready to compare models or request a quotation? Contact Changyu Machine with your excavator model and material type. You can also email Annie@changyumech.com or message us on WhatsApp at +86 189 6161 0533. Our team will gladly share product details, factory price, and technical support.
Hydraulic Clamshell Grab Bucket for Excavators | Factory Price
A grab bucket turns an excavator into a loading and material-handling machine. Instead of digging, it grips material, lifts it, and releases it where you need it. This works well for ore, sand, gravel, scrap, and loose earth. For buyers, the right hydraulic clamshell grab bucket means faster loading cycles, less spillage, and lower running costs.
This guide is for importers, distributors, contractors, and procurement teams who compare excavator grab bucket suppliers. It covers the four standard models from Jiangyin Changyu Machinery Co., Ltd. (ZD05, ZD20, ZD30, and ZD35), explains how the clamshell design works, shows where it performs well, and helps you choose the right size. Use it to prepare a clear inquiry and get an accurate quotation.
Hydraulic Grab Bucket for 5-35 Ton Excavators, Direct from the Factory
Jiangyin Changyu Machinery Co., Ltd. supplies a hydraulic grab bucket range for excavators from 5 to 35 tons. Four models cover this range:• ZD05 for 5-8 ton excavators
• ZD20 for 20 ton excavators
• ZD30 for 30 ton excavators
• ZD35 for 35 ton excavators
Buying direct from the factory shortens the supply chain. You talk to the team that makes the product, so technical questions, pricing, and order details get clear answers. This helps distributors and contractors who need stable specifications and repeat supply.
The shell grab unloads through its left and right buckets. Its overall structure is light and durable, which suits daily loading work on construction and industrial sites.
High Grip Rate, Strong Closing Force, High Material Filling Rate
Buyers usually judge a clamshell grab on three points. Each one affects how much material you move per hour.
• High grip rate: the shells hold material firmly while the operator lifts and swings. Less material falls out, so fewer cycles are wasted.
• Strong closing force: hydraulic power drives the shells shut. This helps the bucket grip material that is hard to grab, such as ore.
• High material filling rate: the shells close on a full load. A fuller bucket per cycle means fewer cycles for the same job.
Together, these points help reduce loading time per ton of material.
Durable Clamshell Grab for Ore, Earthwork, and Road & Railway Construction
The shell grab suits three main types of work: loading materials, earthwork projects, and road and railway construction.Loading Materials
In yards and industrial sites, operators load trucks and hoppers with bulk material. The grab bucket picks up loose material cleanly and drops it with control.Earthwork Projects
On earthwork sites, the grab handles soil, sand, and gravel. It also helps with loose spoil that a standard bucket tends to spill.Road and Railway Construction
Road and railway projects move large volumes of fill and aggregate. A durable grab keeps this work steady over long shifts. Its light structure also leaves more of the excavator's lifting capacity for the load itself.ZD05, ZD20, ZD30, ZD35 Grab Bucket Models: Technical Parameters
The table below lists the standard specifications. Compare the data with your excavator before you order.| Model | Excavator (T) | Capacity (m³) | Inner Width (mm) | Opening (mm) | Weight (kg) |
| ZD05 | 5-8 | 0.35 | 800 | 1,424 | 467 |
| ZD20 | 20 | 1.0 | 1,000 | 2,041 | 1,340 |
| ZD30 | 30 | 1.5 | 1,160 | 2,207 | 1,538 |
| ZD35 | 35 | 1.8 | 1,400 | 2,207 | 1,805 |
Bucket Capacity from 0.35 m³ to 1.8 m³ for 5-35T Excavators
Bucket capacity runs from 0.35 m³ (ZD05) to 1.8 m³ (ZD35). Capacity is volume, not weight. The load you actually lift depends on material density. Ore and wet sand weigh far more per cubic meter than dry soil or light scrap.Check three things before you choose a size:
• Your excavator's lifting capacity at the working radius
• The weight of the grab itself, from 467 kg (ZD05) to 1,805 kg (ZD35)
• The density of your main material
If you are unsure, send us your excavator model and material type. We will recommend a suitable size.
How a Hydraulic Clamshell Grab Bucket Works
Mounting and Hydraulic Supply
The grab mounts on the excavator boom. Its cylinder draws oil pressure from the excavator bucket's hydraulic circuit, so the machine's bucket function powers the grab.The Grabbing Cycle
The operator lowers the open shells onto the material. The boom must apply downward force so the shells engage the pile. The hydraulic cylinder then closes the shells. The operator lifts, swings, and opens the shells to unload. Opening, closing, and lifting actions can overlap, which keeps cycle times short.Key Features of Our Excavator Grab Bucket
• Compatibility: it mounts on an excavator boom and uses the hydraulic circuit of the excavator bucket.• Grasping capacity: hydraulic drive gives strong gripping force for difficult materials such as ore.
• Efficiency: opening, closing, and lifting can overlap, which raises working efficiency.
• Split-and-close design: it spreads the gripping force evenly across the grab and helps prevent deformation.
• Economical operation: low oil pressure produces high gripping force. This supports safe operation and longer seal and grab life.
If you swap attachments often, you can also review our Hydraulic Quick Hitch Coupler. Ask our team whether it suits your excavator and grab model.
Best Applications: Ore Loading, Earthwork, Sand, Gravel, and Scrap Handling
• Ore loading: strong closing force helps the shells grip hard, uneven lumps.• Earthwork: the grab moves soil and loose spoil with less spillage.
• Sand and gravel: controlled opening drops material accurately into trucks or hoppers.
• Scrap handling: the grab lifts loose and mixed scrap. For other scrap and demolition tasks, you can compare our Hydraulic Peel.
• Road and railway construction: it handles fill and aggregate over long working hours.
Why Choose a Clamshell Grab Bucket Over a Standard Digging Bucket?
A digging bucket cuts and scoops. A grab bucket grips, holds, and releases. The right choice depends on the job.Choose a clamshell grab when:
• The material is loose, bulky, or hard to scoop
• You need a controlled drop into a truck, hopper, or barge
• The work is mainly loading rather than digging
Choose a digging bucket when you need to dig compact ground, cut trenches, or shape slopes. See our Digging Bucket for that kind of work. Some contractors keep both attachments, because each one handles a different task.
Compatible Excavator Tonnage Guide: Which Grab Bucket Fits Your Machine?
Use your excavator's operating weight as the starting point:• 5-8 ton excavator: ZD05, 0.35 m³, 800 mm inner width, 467 kg
• 20 ton excavator: ZD20, 1 m³, 1,000 mm inner width, 1,340 kg
• 30 ton excavator: ZD30, 1.5 m³, 1,160 mm inner width, 1,538 kg
• 35 ton excavator: ZD35, 1.8 m³, 1,400 mm inner width, 1,805 kg
The standard range has no model listed for 8-20 ton machines. If your excavator falls in that range, send us the model and we will advise on a suitable option. Also confirm your machine's hydraulic flow, pressure, and boom setup before you order.
Factory Price Excavator Grab Bucket: Get a Quote Today
Factory price depends on model, quantity, configuration, and destination. We prefer to quote against your real requirements, not a generic number. To receive an accurate quotation, send us:• Excavator brand, model, and tonnage
• Main material to handle, such as ore, sand, gravel, or scrap
• Required model or capacity
• Order quantity
• Destination country or port
Then Contact Changyu Machine by email or WhatsApp. Our team will reply with a quotation and technical advice.
How to Choose a Reliable Grab Bucket Supplier
• Ask for a full specification sheet that lists tonnage, capacity, opening, and weight.• Ask how the supplier checks fit with your excavator before shipment.
• Request real photos or video of the product, not only catalog images.
• Ask about the steel used for shells and wear parts, and how welds are checked.
• Confirm lead time, packing, and shipping terms in writing.
Custom Grab Bucket Options for Different Excavator Brands and Tonnages
Standard models do not fit every project. Your excavator brand, boom setup, material, or site conditions may call for changes. Share these details with our team:
• Excavator brand, model, and tonnage
• Mounting connection and pin sizes
• Material type and density
• Required capacity or opening width
• Working conditions, such as abrasive material or long daily operating hours
Our engineers will review your request and tell you what is possible, along with its effect on price and lead time.
Low Maintenance Design That Extends Seal and Grab Life
This design produces high gripping force at low oil pressure. Lower working pressure puts less stress on seals, hoses, and the grab structure. That extends seal and grab life and reduces maintenance.Simple habits keep any hydraulic grab bucket in good condition:
• Grease pivot points on a regular schedule
• Check hoses and fittings for leaks and wear
• Inspect shells and edges for wear and cracks
• Keep cylinder rods clean
• Stop work and repair any hydraulic leak at once
Always follow your excavator manual for hydraulic service.
What Size Grab Bucket Do I Need for a 20-Ton or 30-Ton Excavator?
For a 20-ton excavator, choose the ZD20. It has a 1 m³ capacity, 1,000 mm inner width, 2,041 mm opening, and weighs 1,340 kg.For a 30-ton excavator, choose the ZD30. It has a 1.5 m³ capacity, 1,160 mm inner width, 2,207 mm opening, and weighs 1,538 kg.
Treat tonnage as the starting point. Then check lifting capacity at working radius, material density, and your hydraulic setup. Send us these details and we will confirm the match before you place an order.
Frequently Asked Questions About Hydraulic Clamshell Grab Buckets
What is a hydraulic clamshell grab bucket used for?
It loads and moves bulk material. Typical uses include loading materials, earthwork projects, and road and railway construction. It also handles ore, sand, gravel, and scrap.Which excavator sizes do your grab buckets fit?
The standard models cover 5-8 tons (ZD05), 20 tons (ZD20), 30 tons (ZD30), and 35 tons (ZD35). For other sizes, contact us with your excavator model.How is a grab bucket different from a digging bucket?
A digging bucket scoops and cuts. A grab bucket grips material between two shells and releases it on command. Grabs suit loading and handling work. Digging buckets suit excavation.Does the grab need extra hydraulic lines?
The grab takes its oil pressure from the excavator bucket's hydraulic circuit. Please confirm your machine's setup with our team before ordering.What should I check before buying from an overseas supplier?
Check the specification sheet, fit with your excavator, product photos or video, steel and welding details, lead time, and shipping terms. Get all of these in writing.Can the grab bucket be customized?
Standard models cover 5-35 ton excavators. If you need a different configuration, send us your requirements. Our team will review them and confirm what is possible.Conclusion
A hydraulic clamshell grab bucket is a practical tool for loading ore, earth, sand, gravel, and scrap. The ZD05, ZD20, ZD30, and ZD35 models cover excavators from 5 to 35 tons, with capacities from 0.35 m³ to 1.8 m³. Strong closing force, a split-and-close design, and low oil pressure operation make this excavator grab bucket a sound fit for long-term loading work.Ready to compare models or request a quotation? Contact Changyu Machine with your excavator model and material type. You can also email Annie@changyumech.com or message us on WhatsApp at +86 189 6161 0533. Our team will gladly share product details, factory price, and technical support.