Table Size: 480×200mm · Max. Table Travel: 520×220mm · T-slot: 1×14mm

The M Series Manual Surface Grinder offers precise flat and vertical machining with a robust cross-table design and smooth hand-feed control. Ideal for toolrooms and repair work, it delivers consistent surface finishes and micron-level accuracy across various materials.

M Series

Regular maintenance

Spare parts supply

On-site installation service

Customized design

Key Features

● Stable Cross-Table Structure: A rigid cross-drag table layout improves machine stability and weight distribution, reducing vibration during grinding and enhancing consistency and surface finish quality over extended operation.

● Precision Ball Screw Feed: Both longitudinal and cross-feed movements are supported by high-precision ball screws, minimizing backlash and enabling smooth, accurate manual positioning for long-term dimensional control.

● Optimized Transverse Motion: The saddle adopts a double-V guideway structure lined with Teflon wear-resistant belts, reducing friction and ensuring precise, linear motion throughout grinding operations.

● Durability-First Construction: All major structural parts are made from aged HT250 or higher-grade cast iron, providing excellent damping characteristics and thermal stability—ideal for continuous use in variable workshop environments.

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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	618A	MG618A	818A
Table size(L*W)	mm	460*180	460*180	480*200
Max.travel of table(L*W)	mm	500*190	500*190	530*220
T-slot of table(No.*width)	mm	1*14
Distance from spindle center to worktable	mm	335	440	440
Wheel size(ODWidthID)	mm	2001331.75	/	2001331.75
Spindle speed(stepless)	r/min	2850
Vertical feed handwheel per revolution	mm	1.25
Vertical feed handwheel per division	mm	0.005
Transverse feed handwheel per revolution	mm	5
Transverse feed handwheel per division	mm	0.02
Spindle motor	KW	1.1
Cooltant motor	KW	0.04
Parallelism of machined surface to base surface	mm	300:0.004	300:0.002	300:0.004
Surface roughness	μm	Ra0.32	Ra0.16	Ra0.32
Net/Gross weight	kg	650/750	650/750	750/850
Permanent-magnetic chuck	mm	400*150	400*150	400*200
Package dimension(LWH)	mm	100011501760	100011501760	114012501940

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.