Grinding Hole Diameter: φ40–φ100mm · Effective Grinding Depth: 900mm · Max. Workpiece Swing: φ400mm

The MX-2018 is a high-end internal grinding machine with a marble–steel bed and triple-head system for precise internal, center bore, and end-face grinding in one setup. Featuring Siemens CNC, linear motors, and automation, it delivers micrometer-level accuracy and efficient production for both small batches and high volumes.

MX-2018 Series

Regular maintenance

Spare parts supply

On-site installation service

Customized design

Key Features

● Stable & Rigid Machine Structure: Constructed with a cast steel frame and marble base, the machine offers superior damping and thermal stability, ensuring consistent machining accuracy even during extended or high-speed operations.

● 3-in-1 Compound Grinding System: Integrates three grinding heads—internal, center hole, and end-face—into a single setup. Equipped with German GMN bearings, the system enables high-speed internal grinding alongside precise OD and face finishing.

● High-Precision Linear Motion: Utilizes direct-drive linear motors and high-resolution encoders for backlash-free movement, delivering ±0.001 mm positioning accuracy for ultra-precise operations.

● Fully Automated Workflow: Robotic loading and unloading, combined with Siemens CNC control, supports 24/7 production with minimal manual input and ensures consistent quality across high-volume manufacturing runs.

● Advanced Grinding Wheels & Dressing: Employs CBN wheels for small bore applications and ceramic wheels for OD and face grinding, while a diamond dressing disc maintains sharp and accurate wheel profiles throughout production.

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Recommended Configurations

● Workpiece Spindle & Clamping: Servo/variable frequency motor, pneumatic/hydraulic fixtures, centers or centerless support, optional cooling

● Feeding & Motion System: Servo motor, ball screw, precision rails, gap compensation

● Wheel Dressing System: Internal wheel dresser (single-point/roller/diamond), automatic cycle setting

● Cooling & Chip Removal: Cooling circulation, adjustable nozzles, filtration (magnetic separator + paper filter), chip conveyor

● Control & Automation: HMI touch screen, automatic loading/unloading

● Measurement & Compensation: Contact/laser probe, rotary encoder/displacement sensor

● Safety & Protection: Enclosed cover, interlock system, emergency stop, wheel protection, spark/dust protection

● Accessories & Options: Workpiece positioning stand, internal fixture, lighting, non-standard fixtures

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Application Case

● Client: Hydraulic Valve Manufacturer – Japan

● Component: Internal face and center bore of hydraulic sleeves (Ø8 mm × 28 mm)

● Setup: MX-2018 with robotic loader, CBN grinding head, GMN internal spindle

● Results: • Tolerance Held: ≤ ±1.5 μm roundness, ≤ 0.003 mm coaxiality • Cycle Time: 38 seconds per part (including full 3-surface grinding)

● Operator Feedback: “This machine completely eliminated our need for post-process correction. With one clamp and three surfaces done, we’ve halved our grinding floor space and doubled part consistency.”

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Specifications	Unit	MX-2018
Grinding diameter	mm	3-20
Max.grinding depth	mm	20
Max.clamping diameter of workpiece	mm	30
Max.movement of worktable(axis Z)	mm	250
Max.movement of wheelhead(axis X)	mm	680
Moving speed of worktable(axis Z)	m/min	0-20
Moving speed of worktable(axis Y)	m/min	0-20
Resolution of axis Z	mm	0.0001
Resolution of axis X	mm	0.0001
Rotating speed of work spindle	r/min	0-4000
Swivel angle of the workhead	°	±1
Positional accuracy	mm	±0.0025
Relocation accuracy	mm	±0.0015
Max.speed of bore spindle	r/min	105000
Max.power of bore spindle	KW	2
Max.speed of OD spindle	r/min	3000
Max.power of OD spindle	KW	10
Roundness of bore	mm	0.0005
Cylindricity of bore	mm	0.001
Size deviation of bore	mm	±0.002
Roundness of OD	mm	0.001
Vertical deviation between OD and end face	mm	0.0015
Size deviation of OD	mm	0.008
Coaxiality of ID and OD	mm	0.0015
Parallel deviation between internal end face and datum end face	mm	0.01
Thickness deviation of internal end face	mm	±0.01
Roughness	μm	Ra0.1
Machine size	mm	2250×1700×2000
Total weight of machine	Kg	5500

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.