A mining contractor in a certain location in Kazakhstan was developing a new quarry site. The overburden contained large granite blocks that needed to be crushed into 50- 80 mm aggregate for road base. Transporting the rock to a fixed crusher was expensive – haul trucks had to travel 15km each way. The contractor wanted a mobile crushing solution that could work directly at the face.
After researching options online, he discovered YG’s rock crusher bucket. He needed an excavator rock crusher bucket that could mount onto his 30‑ton excavator and handle granite with high silica content. YG recommended the YG‑4 model.
Technical Parameters Of The Rock Crusher Bucket
YG offers eight models of the machine. Based on the customer’s 30‑ton excavator and target output of 30‑40 m³/h, YG selected the YG‑4. Below are key specifications:
| Specification | Unit | YG-4 Value |
| Carrier weight | Ton | 25-30 |
| Load capacity | m³ | 0.70 |
| Opening dimensions (L×H) | mm | L850 × H510 |
| Output setting | mm | 15-135 |
| Length (A) | mm | 2050 |
| Width (B) | mm | 1300 |
| Height (C) | mm | 1400 |
| Weight | Ton | 3.0 |
| Oil flow | L/min | 160 |
| Pressure | bar | 220 |
The YG‑4 rock crusher bucket weighs 3.0 tons and accepts material up to 850mm wide. This machine features a reversible jaw plate for extended wear life.
How Did This Excavator Rock Crusher Bucket Transform Operations?
The Kazakh contractor mounted the excavator rock crusher bucket onto his 30‑ton excavator. The first test was on a pile of blasted granite blocks. Results were impressive:
- Crushing speed: The equipment processed 5 tons of granite in under 20 minutes, producing consistent 50- 60 mm aggregate.
- On-site versatility: The operator crushed material directly at the face and stockpiled it for truck loading. No haulage to a fixed crusher was needed.
- Adjustability: The output setting was changed from 60mm to 40mm in under 10 minutes using the manual adjustment system.
The rock crusher bucket also handled reinforced concrete debris from an abandoned building on site. The magnetic separator (optional) removed rebar from the crushed output.
Customization For Kazakh Winter Conditions
YG engineers considered Kazakhstan’s harsh winters and the abrasive nature of granite. Customizations included:
- Low‑temperature hydraulic hoses rated for ‑40°C operation.
- Heavy‑duty jaw plates made of Hardox 500 steel to resist abrasive wear from silica‑rich granite.
- Electric heating pads on the hydraulic motor to prevent cold‑start issues.
- Anti‑freeze additive in the cylinder seals maintains flexibility in extreme cold.
For the rock crusher bucket, YG also added a wear indicator on the jaw plates so the operator knows when to rotate or replace them. The equipment was painted with a cold‑resistant coating to prevent flaking.
Tangible Results After Using The Rock Crusher Bucket
After three months of operation, the Kazakh contractor recorded measurable gains:
- Crushing cost dropped by 70%.
- Production rate averaged 35 m³/h, matching the target output.
- Downtime was minimal – only routine jaw plate rotation every 200 hours.
- On-site stockpile eliminated haul truck waiting time, increasing excavator utilization by 40%.
This unit paid for itself in five months. The contractor has since ordered a YG‑6 model for his 45‑ton excavator used in a larger copper mine.
Smooth Cooperation And Final Conversion
YG provided jaw plate rotation diagrams and production capacity charts. Sea freight was arranged from China to Aktau port, then by rail to the quarry site. Remote video support via WhatsApp guided the first jaw plate change. This unit came with a one‑year warranty and a spare set of jaw plates.
For any mining company, demolition contractor, or road builder needing a rock crusher bucket, YG offers proven solutions. Contact us today for a free quote.
【WhatsApp/WeChat/Phone】+86 159 3715 3321
