A tunneling and road construction company in Malaysia faced a growing problem with its urban infrastructure projects. Their hydraulic breakers created too much noise. Nearby residents filed complaints. The vibration damaged adjacent structures. The breakers also produced inconsistent results. The rock faces came out uneven. The company spent extra time and money on rework. The project manager knew he needed a different approach for their tunnel excavation and road milling work. Traditional breakers could not meet the city’s noise restrictions and precision requirements. They needed a drum cutter for excavator that could cut rock smoothly with less noise and vibration.
The company required consistent, controlled cutting that would produce clean surfaces. This article tells their real story. You will see the challenges they faced, how they chose YG’s excavator rock grinder, and what results they achieved.
Customer Background: A Tunneling and Road Construction Company in Malaysia
The customer operates a civil construction company in Malaysia’s Klang Valley region. The company specializes in tunnel excavation, road construction, and municipal infrastructure projects. They employ 150 people and operate a fleet of 20 excavators ranging from 5 to 24 tons.
Before buying from YG, the company used hydraulic breakers for rock excavation and road milling. The breakers worked but created significant problems on urban job sites. The company also used buckets for softer materials. But the buckets could not handle hard rock or concrete.
The customer had three main requirements for a new attachment. First, the attachment needed to cut rock and concrete with low noise and vibration. Second, the attachment needed to produce smooth, consistent surfaces to reduce rework. Third, the attachment needed to work efficiently in confined urban spaces and tunnel environments.
The customer started searching for a hydraulic milling attachment that could meet these requirements.
Customer’s Specific Problems Before Buying the Drum Cutter for Excavator
The contractor had four major problems with their existing equipment.
Problem 1: Excessive noise. The hydraulic breakers produced over 100 decibels at the operator’s position. The company received regular complaints from nearby residents. Some projects faced work stoppages due to noise violations. The company paid fines totaling $8,000 over six months.
Problem 2: High vibration. The breakers transmitted a strong vibration to the excavator boom. This caused premature wear on pins, bushings, and boom structures. The company spent $3,000 per month on repairs related to vibration damage.
Problem 3: Inconsistent cutting. Breakers produce rough, uneven surfaces. The company had to spend additional time smoothing the surfaces with other tools. Rework added 20% to project timelines.
Problem 4: Limited precision. Breakers cannot control the cutting depth and shape accurately. The company struggled with over-excavation and under-excavation, especially in tunnel projects where precision matters.
The project manager calculated the total monthly cost of their breaker-related issues. Fines, repairs, rework, and delays added up to approximately $12,000 per month. He wanted a hydraulic milling attachment that could reduce these costs.
The Search for an Excavator Milling Head
The project manager started searching online for an excavator milling head. He needed an attachment with specific features.
First, the attachment had to produce significantly lower noise than breakers. The company needed to comply with Malaysia’s urban noise regulations. Some projects required noise levels below 70 decibels.
Second, the attachment had to create minimal vibration. The company wanted to reduce wear on its excavator fleet. They also needed to avoid damaging nearby structures.
Third, the attachment had to provide precise, controlled cutting. The company needed to achieve accurate tunnel profiles and smooth surfaces without rework.
Fourth, the attachment had to handle both rock and concrete. The company worked on diverse materials across different projects.
The manager contacted several suppliers. He requested quotes for a drum cutter for an excavator. Some suppliers offered attachments that met his requirements, but at high prices. Other suppliers offered lower prices but could not provide detailed specifications. Then he found YG Machinery.
YG’s Solution: The Custom Excavator Rock Grinder
YG’s sales engineers conducted a thorough needs assessment, asking detailed questions about the customer’s excavator fleet, the materials they processed most often, site noise restrictions, and production targets. Based on the customer’s input, YG recommended the following excavator milling head models:
| Model | YG140 | YG160 | YG180 | YG240 |
|---|---|---|---|---|
| H | 650mm | 820mm | 830mm | 1395mm |
| W | 410mm | 650mm | 780mm | 960mm |
| D | 390mm | 460mm | 480mm | 620mm |
| Excavator weight | 5~10T | 10~15T | 15~21T | 20~24T |
| Max power | 22Kw | 45Kw | 55Kw | 65Kw |
| Speed | 0~120r/min | 0~100r/min | 0~80r/min | 0~90r/min |
| Flow | 40L/min | 100~110L/min | 130~180r/min | 200~250r/min |
| Max Torque | 3200N.m | 5400N.m | 5600N.m | 12800N.m |
The customer ordered five units across different models: two YG180 units for their 18-ton excavators, two YG160 units for their 12-ton excavators, and one YG240 unit for their 22-ton excavator.
The customer noted several specific advantages of the YG drum cutter for the excavator.
First, the drum cutter uses a rotating drum with replaceable cutting teeth. The drum spins at high speed and cuts material through a milling action. This produces significantly less noise and vibration than a breaker’s impact action. A drum cutter for an excavator operates smoothly and continuously, unlike the hammering effect of a breaker.
Second, the drum cutter provides precise, controlled cutting. Operators can adjust the cutting depth and shape easily. The milled surfaces come out smooth and even. This eliminates the need for rework.
Third, the drum cutter works efficiently in confined spaces. The compact design allows operation in tunnels and urban sites where larger equipment cannot fit. The attachment also rotates to different angles for versatile cutting.
Fourth, the drum cutter reduces excavator wear. The low vibration extends the life of booms, pins, and bushings. This reduces maintenance costs significantly.
The customer placed the order for five excavator rock grinder units.
Implementation Process: Delivery and Setup of Drum Cutter for Excavator
Step 1: Factory Production and Testing
YG Machinery completed the five excavator milling head units in 25 working days. Throughout assembly, the team followed YG’s quality checklist at every station—testing hydraulic motors for leaks, running drums through all speed ranges, measuring torque output, and inspecting cutting teeth for proper installation.
The units passed all tests. YG sent the customer a video of each unit operating in the factory. The customer approved the shipment.
Step 2: Shipping to Malaysia
The units traveled from YG’s factory to the port by truck. The sea freight took 12 days to reach Port Klang in Malaysia. Customs clearance took 4 days. YG provided all necessary documents: commercial invoice, packing list, bill of lading, and certificate of origin.
The customer’s freight forwarder handled the customs process. The units cleared customs without issues. A flatbed truck carried the units from Port Klang to the customer’s yard. The total shipping time from the factory to the site was 22 days.
Step 3: On-Site Installation
YG Machinery sent a service technician to Malaysia. The technician arrived at the customer’s yard two days before the units. He inspected the excavators scheduled for installation. He verified the hydraulic flow and pressure ratings.
The units arrived on a flatbed truck. A forklift unloaded them. The technician and the customer’s team installed the units on the excavators. Each installation took approximately four hours. The technician tested each unit for proper operation.
Step 4: Operator Training
The YG technician trained eight of the customer’s operators. The training covered:
- Daily startup and shutdown procedures
- Control lever functions
- Speed and torque adjustments
- Cutting tooth inspection and replacement
- Daily cleaning and lubrication
- Safety procedures
- Troubleshooting common issues
Each operator practiced cutting test materials for two hours. They learned to achieve consistent results. They learned to maintain the units.
The technician stayed for five days. He answered questions and watched the operators work. He left a training manual and a spare parts list for each unit.
Challenges During the Implementation of the Drum Cutter for Excavator
The customer faced two challenges during the first month of operation.
Challenge 1: Hydraulic flow adjustment. The excavators’ hydraulic systems required flow adjustments to match the drum cutters’ specifications. Some excavators had flow rates outside the recommended range. YG technicians provided remote guidance to adjust the flow. The problem was resolved within two days.
Challenge 2: Cutting tooth wear. The initial cutting teeth wore down faster than expected on hard rock projects. YG recommended a different tooth type for the customer’s specific rock conditions. The new teeth lasted 40% longer.
Final Results: Measurable Improvements with Drum Cutter for Excavator
The customer tracked performance for 60 days after receiving the drum cutter for excavator units. Here are the results.
Noise Reduction: 70% Lower
The hydraulic breakers produced 100-105 decibels. The YG excavator rock grinder units produce 55-60 decibels at the operator’s position. The company has received zero noise complaints since switching.
Vibration Reduction: 80% Lower
The drum cutters produce minimal vibration compared to breakers. The company has seen a significant reduction in excavator wear. Boom pin replacements have dropped by 80%.
Cutting Efficiency: 30% Faster
The hydraulic milling attachment cuts continuously rather than pounding intermittently like a breaker. The customer reported a 30% increase in cutting speed.
Rework Reduction: 90% Lower
The smooth, consistent surfaces produced by the excavator milling head eliminate the need for rework. The company has reduced rework costs by 90%.
Production Output: 150% Higher
The combination of faster cutting speed and reduced rework has allowed the company to complete more projects. They now handle 150% more work with the same number of excavators.
Total Monthly Savings
| Cost Category | Before (Breakers) | After (Drum Cutters) | Savings |
|---|---|---|---|
| Noise fines | $1,300 | $0 | $1,300 |
| Vibration repairs | $3,000 | $600 | $2,400 |
| Rework labor | $5,000 | $500 | $4,500 |
| Cutting teeth | $2,700 | $1,800 | $900 |
| Total | $12,000 | $2,900 | $9,100 |
Customer’s Direct Feedback on Drum Cutter for Excavator
The project manager shared his experience after two months of using our machine.
“The YG drum cutter for the excavator completely solved our noise and vibration problems. We can now work in urban areas without complaints. The cutting quality is excellent. Our tunnel profiles are clean and accurate. The operators prefer the drum cutters over breakers because they are easier to control and less tiring to operate. We have already ordered two more units for our new projects.”
The lead operator added his comments.
“The excavator rock grinder is so much easier to use than the breaker. The machine cuts smoothly without the hammering. I can control the depth precisely. The noise level is comfortable. I do not get tired after a full shift. The cutting teeth are easy to replace. The unit has made my job much better.”
Future Outlook
The customer plans to convert their entire fleet to excavator milling head units. They have already ordered two additional YG240 units for their largest excavators. They are also exploring YG’s other attachments for specialized applications.
YG Machinery continues to support the customer with remote technical assistance. The YG service team answers questions via WhatsApp within a few hours. They have shipped a set of spare cutting teeth to the customer as a preventative measure.
The customer has recommended YG to two other construction companies in Malaysia. One of them has already requested a quote for a hydraulic milling attachment.
Contact YG Machinery today for your drum cutter for excavator needs. Tell us your excavator model and project requirements. We will recommend the right unit and send you a full price, including shipping to your port. Every unit comes with a 12-month warranty and lifetime technical support.
Click the contact button now to request a quote. Ask for our free productivity calculator to estimate your potential time and cost savings.
