Imported Advanced Tech & Standardized Quality Assurance
We adopt internationally recognized manufacturing standards and introduce mature overseas precision machining technologies for all LD series equipment. Every air-floating valve seat boring machine and valve grinder undergoes strict quality inspection to fully satisfy global buyers’ standards, earning consistent positive feedback from domestic and overseas distributors for reliable build quality and complete after-sales support.
Advanced Air-Floating Centering System for Ultra-High Concentricity
Equipped with a premium air-floating automatic centering and vacuum clamping structure, the LD180 Series achieves perfect spindle coaxiality between valve guides and valve seats. This core design eliminates positioning deviation, drastically lifts overall machining precision and cuts repeated fixture setup time during continuous cylinder head overhaul work in professional engine rebuilding workshops.
Ultra-Wide Machining Range & Adjustable Servo Spindle
The series covers 3 core specifications with 14 – 70 mm, 14 – 90 mm and 14 – 120 mm processing diameters, compatible with passenger vehicles, motorcycles, heavy trucks, agricultural machinery and marine engines. The 20 – 1,000 rpm variable-speed servo spindle with 200 mm travel delivers stable cutting for multi-angle valve seat boring and guide hole finishing across diverse engine repair scenarios.
High-Efficiency Rigid Machine Design to Boost Workshop Profit
Built with a heavy cast iron rigid frame, quick-change tooling and integrated auxiliary devices, the LD180 series features high precision and high throughput to lower manual labor costs. It is widely adopted in engine remanufacturing factories and professional cylinder head repair shops, helping operators streamline overhaul workflows and create stable long-term revenue with reliable continuous operation.
Technical Specifications
| Model | LD180A | LD180B | LD180C |
| Max. length of cylinder head | Unlimited | ||
| Max. width of cylinder head | 500 mm (19.7″) |
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| Max. height of cylinder head | 450 mm (18.7″) |
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| Crosswise workpiece tilting | +45° – -15° | ||
| Machining capacity dia. (min – max) | 14 – 70 mm (0.6 – 2.29″) |
14 – 90 mm (0.6 – 2.95″) |
14 – 120 mm (0.6 – 4.7″) |
| Lengthwise travel | 1,000 mm (39″) |
1,230 mm (48.4″) |
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| Crosswise travel | 40 mm (1.6″) |
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| Sphere-cylinder travel | 9 mm (0.4″) |
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| Spindle power | 1,800 W | 2,200 W | 3,000 W |
| Spindle rotation speed | 20 – 1,000 rpm | ||
| Spindle travel | 200 mm (8.5″) |
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| Max. spindle inclination | 5.5° | ||
| Electric supply | 380 V / 50 Hz 3 Ph or 220 V / 60 Hz / 3 Ph | ||
| Air pressure | 6 bar (87 psi) |
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| Max. air flow | 300 L/min (11 CFM) |
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| Noise level at 400 RPM | 65 dBA | ||
| Noise level at 1,200 RPM | 82 dBA | ||
| Net weight (approx.) | 1,750 kg (3,858 lbs) |
1,850 kg (4,078 lbs) |
1,950 kg (4,299 lbs) |
| Machine space requirements (L × W × H) | 2,000 × 1,050 × 2,050 mm (78.7 × 41.3 × 85.4″) |
2,100 × 1,150 × 2,200 mm (82.6 × 45.3 × 86.6″) |
2,250 × 1,150 × 2,200 mm (88.5 × 45.3 × 86.6″) |
FAQ
1. What are the advantages of an air-floating valve seat boring machine?
The LD180 features an air-floating centering system that allows the spindle to automatically align with the valve guide before machining. Compared with conventional manual positioning, the air-floating system reduces setup time, improves centering accuracy, and delivers more consistent valve seat machining results, especially when servicing multiple cylinder heads each day. Air-floating technology is widely adopted on professional valve seat machines to improve positioning efficiency and machining precision.
2. Can the LD180 machine different valve seat sizes and seat angles?
Yes. The LD180 is designed to machine a wide range of valve seat diameters and supports the common seat angles used in modern gasoline and diesel engines. With the appropriate pilots and cutting tools, it can service everything from small automotive cylinder heads to large industrial and heavy-duty diesel engines.
3. How does the LD180 improve valve sealing performance?
Accurate valve seat machining ensures the valve contacts the seat evenly around the entire circumference. Proper concentricity and seat geometry improve combustion sealing, restore compression, reduce valve leakage, and extend engine service life. Industry service manuals emphasize concentric valve seat machining as a key requirement during cylinder head rebuilding.
4. Is the LD180 suitable for high-volume engine rebuilding workshops?
Absolutely. The LD180 is designed for professional automotive machine shops, cylinder head remanufacturing facilities, diesel engine repair centers, and OEM rebuilding operations. Its air-floating positioning system speeds up setup while maintaining repeatable machining accuracy, making it ideal for continuous production and high-volume cylinder head reconditioning.
5. Why choose the LD180 instead of a conventional valve seat boring machine?
Unlike conventional machines that rely entirely on manual positioning, the LD180’s air-floating centering system helps operators achieve faster alignment and more consistent machining accuracy. This reduces operator dependency, improves productivity, and delivers reliable valve seat concentricity across a wide range of cylinder heads—from small automotive engines to large stationary diesel engines.
6. If the machine breaks down, how do you provide after-sales support? Do you provide operation videos?
Yes. We provide comprehensive after-sales support, including remote technical assistance, online troubleshooting, operation manuals, demonstration videos, maintenance tutorials, and live video guidance. If replacement parts are required, genuine spare parts can be supplied quickly to minimize downtime and keep your machine running efficiently.
7. Can you issue Certificates of Origin (CO), Form A, Form E, or other export documents?
Yes. We can provide the necessary export documents—including Certificates of Origin (CO) and other preferential certificates such as Form E—in accordance with the trade agreements and customs requirements of the destination country. We can also assist you in preparing commercial invoices, packing lists, bills of lading, and other export documentation.
8. What is your minimum order quantity (MOQ)? Do you support OEM & ODM customization?
Our standard MOQ is 1 machine for most models. We also provide OEM and ODM services for distributors and equipment brands, including custom logos, machine colors, nameplates, voltage, packaging, and other specifications to meet your market requirements.
9. Which shipping ports do you use? Can you deliver to my designated warehouse?
We typically ship from major Chinese ports, including Shenzhen, Guangzhou, Ningbo, and Shanghai. We can also arrange delivery to your designated warehouse, freight forwarder, or project site through flexible international shipping solutions.
10. How long does delivery take to my country?
Production typically takes 7–35 days, depending on the machine model and order quantity. Shipping time varies by destination and transportation method. Once your order is confirmed, we will provide a detailed production schedule and estimated delivery time.
