Max Longitudinal Travel: 1130mm · Table Size: 400×1000mm · Cross Travel: 450mm

The SGA Series Saddle Moving Surface Grinder is designed for high-precision surface grinding of small to medium-sized components, especially those with complex geometries. Featuring a cross-arm saddle layout and PTFE-coated guideways, it delivers consistent accuracy with smooth motion and stable support.

SGA Series

Regular maintenance

Spare parts supply

On-site installation service

Customized design

Key Features

● Optimized Structural Layout: Features a cross-slide structure with PTFE-coated guideways to reduce friction and enhance stability, ensuring long-term grinding accuracy and machine durability.

● Stable Hydraulic Table System: A closed-loop hydraulic drive provides smooth, consistent longitudinal table feed, maintaining performance across extended grinding cycles.

● Flexible Vertical Feed Options: AHR models utilize a conventional motor-driven vertical lift for manual adjustment, while AHD models integrate servo motors and PLC control for programmable automatic infeed.

● Precision Grinding Performance: Outfitted with a high-rigidity spindle and dynamically balanced grinding wheel, the machine achieves superior flatness and surface finishes down to Ra ≤ 0.4 μm.

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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 Tooling Manufacturer – Italy

● Use Case: Surface finishing of mold plates and gauge blocks

● Model: SGA-1000AHD with magnetic chuck and DRO

● Results: • Flatness deviation: ≤ 0.002 mm over 500 mm • Reduced setup time: –35% with servo automation • Operator efficiency: Improved by 40% due to programmable feed • Surface roughness: Achieved Ra ≤ 0.4 μm

● Client Feedback: “The SGA-AHD surface grinder offers high repeatability with minimal manual intervention. It has significantly streamlined our mold finishing process.”

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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)
Grinding wheel	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

MN CATALOG.pdf

Frequently Asked Questions

1、I only have the part drawings for the grinding machine. Can you recommend a suitable surface grinding machine?

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.

2、Can your company provide customized CNC surface grinding machines?

Yes, your company can provide customized CNC 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.

3、 What applications are manual surface grinding machines suitable for?

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.

4、Are you surface grinding machine manufacturers?

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.

5、Can the grinding machines be customized?

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.

6、How is the quality of your surface grinding machines ensured?

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.

7、What is the delivery time for your machines?

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.

8、What’s the difference between gantry type surface grinding machines and double column surface grinding machines?

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.