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560mm · Table Size: 250×500mm · Cross Travel: 275mm
The SGA-2550AHD is a medium-size saddle moving surface grinder designed for precision grinding of flat surfaces in toolrooms, die shops, and small part production cells. Featuring a 250×500mm worktable, 560mm longitudinal travel, and 275mm cross travel, it balances grinding area and machine footprint, making it ideal for high-precision tasks on a wide range of materials.
SGA Series
Spare parts supply
On-site installation service
Customized design
Why Choose Our CNC Solutions
Key Features
- ● Precision Saddle Moving Table: Ensures rigid, vibration-free motion, suitable for fine surface finishes and accurate step grinding, providing high-quality results.
- ● Auto Feed in Three Axes (X/Y/Z): Longitudinal and cross movements are driven by hydraulics, while the vertical downfeed is powered electronically with fine control, enhancing precision and flexibility.
- ● Compact Yet Spacious Work Area: Accommodates medium-sized parts, allowing for multi-part fixtures and longer plate grinding, improving efficiency for various applications.
- ● High-Stiffness Column & Spindle System: Delivers long-term accuracy and stability during heavy-duty continuous operation, ensuring consistent performance in demanding tasks.
- ● Integrated Coolant + Magnetic Filtration: Enhances finish quality and extends tool and wheel life, contributing to a cleaner workspace and improved overall machine longevity.
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Recommended Configurations
- ● Spindle System: High-Precision Spindle, Spindle Motor and Cooling System
- ● Feed and Worktable System: Ball Screws, Linear Guideways, Magnetic or Mechanical Clamping System
- ● Grinding Wheel and Grinding Head System: Grinding Wheel Adjustment Device, Manual Dressing Tool
- ● Safety and Lubrication System: Protective Covers, Safety Doors and Emergency Stop Button, Automatic Lubrication System and Lubricant Oil Filtration Device
- ● Other: Grinding Wheel Dressing Tools and Workpiece Fixtures, Human-Machine Interface (HMI)
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Application Case
- ● Client: Precision fixture and tool maker (Turkey)
- ● Workpiece: Hardened tool steel plates, 240mm × 380mm × 18mm
- ● Setup: SGA-2550AHD with magnetic chuck, auto downfeed, coolant system
- ● Results: Flatness accuracy: ≤ 4 μm across full surface Surface finish: Ra 0.2–0.3 μm with aluminum oxide wheel Cycle efficiency improved by 35% vs manual grinder No rework required on final assembly of tooling jigs
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Product Specifications
| Specification | Unit | SG-2050H/AH | SGA-2550AH | SGA-3063AH | SGA-30100AH | SGA-4080AH | SGA-40100AH | |
|---|---|---|---|---|---|---|---|---|
| SG-2050AHR | SGA-2550AHR | SGA-3063AHR | SGA-30100AHR | SGA-4080AHR | SGA-40100AHR | |||
| SG-2050AHD | SGA-2550AHD | SGA-3063AHD | SGA-30100AHD | SGA-4080AHD | SGA-40100AHD | |||
| Table size(w×L) | mm | 200×460 | 250×500 | 305×635 | 305×1020 | 406×813 | 406×1020 | |
| Max.longitudinal travel | mm | 510 | 560 | 765 | 1130 | 910 | 1130 | |
| Cross travel | mm | 238 | 275 | 340 | 340 | 450 | 450 | |
| Max.distance from spindle center to table | mm | 450 | 450 | 560 | 560 | 560 | 560 | |
| Magnetic chuck size | mm | 200×460 | 250×500 | 300×600 | 300×1000 | 400×800 | 400×1000 | |
| Speed of table longitudinal movement | m/min | 7~23 | ||||||
| Table transversemovement | Auto feed | mm/min | 0.1~8 | |||||
| Rapid speed | mm/min | 990 | ||||||
| Feed of handwheel | mm/div. | 0.02 | ||||||
| Wheelhead vertical movement | Auto feed | mm/stroke | ——(AH/AHR mode)0.005/0.01/0.02/0.03/0.04/0.05(Only for AHD model) | |||||
| Rapid speed | mm/min | (AH mode)460(Only for AHR/AHD model) | ||||||
| Feed of handwheel | mm/div. | 0.005 | ||||||
| Grinding wheel | Speed | rpm | 2850(50Hz)、3450(60Hz) | 1450(50Hz)、1750(60Hz) | ||||
| Size(OD×W×ID) | mm | 200×20×31.75 | 350×40×127 | |||||
| Spindle Motor | kW | 1.5 | 2.2 | 5.5 | ||||
| Hydranlic motor | kW | 1.5 | 0.75 | 2.2 | ||||
| Cooling pump motor | kW | 0.04 | 0.125 | |||||
| Elevating motor | kW | —(AH mode)0.25(AHR mode)0.5(AHD mode,servo motor) | ||||||
| Cross feed motor | kW | 0.08 | ||||||
| Max.loading capacity of table(include magnetic chuck) | kg | 120 | 180 | 270 | 400 | 500 | 600 | |
| Total rated power | kW | 3 | 3.7 | 9 | ||||
| Height of machine | mm | 1675 | 1890 | |||||
| Floor space(L×W) | mm | 1700×1200 | 2300×1650 | 2900×2200 | 4400×2200 | 3600×2400 | 4400×2400 | |
| Gross weight | kg | 1200 | 1800 | 2600 | 3300 | 3300 | 3700 | |
| Package dimensions(L×W×H) | mm | 1900×1720×2175 | 2000×2100×2175 | 2350×2220×2150 | 2950×2220×2210 | 2850×2270×2180 | 2950×2270×2210 | |
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Frequently Asked Questions
Yes. Minnuo has a professional and responsive technical support team. As long as you provide the part drawings, we can recommend a matching machine within 10 minutes for a single device. For multiple machines or a production line, we will provide a solution within 5 working days.
Yes, your company can provide customized automatic surface grinding machines for customers. Whether it's the control system, spindle power, automatic wheel change device, or exterior design, we can customize according to customer requirements to meet various processing needs.
Our manual surface grinding machines are suitable for small to medium batch production, repair workshops, and mold processing. They feature simple structure and easy maintenance, making them ideal for users with moderate automation needs but high precision requirements.
Yes, Minnuo is a professional surface grinding machine manufacturer with complete R&D, production, and testing systems. We provide both standard models and customized solutions, and have delivered equipment to customers in over 30 countries worldwide.
Minnuo has a complete set of basic production equipment. Whether it's the machine system, spindle speed, motor power, or sheet metal enclosure, we can provide customized solutions.
We are equipped with high-end machine tools from leading international brands to ensure the machining accuracy of components. Each surface grinding machine is rigorously tested before delivery and comes with a quality inspection report.
For standard models like manual surface grinding machines or regular CNC surface grinders, we have stock available for quick delivery. For customized models like the double column surface grinding machine, the delivery time is typically 30–45 working days, depending on the order.
Both are heavy-duty grinders. A gantry type surface grinding machine generally has a gantry structure, suitable for large workpiece surfaces. A double column surface grinding machine emphasizes rigidity and high precision, ideal for mold and precision part processing. We can recommend the right model based on your workpiece size and precision needs.
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