High Precision CNC Centerless Grinding Machine

MX-M400 series high precision CNC centerless grinding machine is the latest addition to the lineup of precision machining tools available in the market. A fully automatic numerical control centerless grinder is a fully automated system that performs high-quality grinding operations on various materials, including metal and plastics. The machine is designed with a high level of precision, ensuring that it delivers consistent and accurate results every time.

 

The MX-M400 CNC centerless grinding machine supports multi-axis synchronized motion of the grinding wheel, guide wheel, and reamer, enabling one-pass grinding of complex profiles such as conical surfaces and stepped shafts. It integrates laser or pneumatic measuring instruments to achieve real-time dimensional monitoring during processing and automatically adjusts grinding parameters to minimize manual intervention.

 

 

 

Spindles (Grinding Wheel Head/Guide Wheel Head)

* Material: Utilizing alloy structural steel (such as 40Cr, 38CrMoAlA steel) after nitriding treatment, its surface hardness can reach 950~1200HV, equivalent to 65~72HRC, far exceeding that of the carburized and quenched layer. The nitrided layer not only has high hardness but also excellent wear resistance and friction reduction properties.

* Bearings: Ultra-precision rolling bearings, such as P4 and P2 grades, have extremely high precision standards. The radial runout error of P4 grade bearings is 2-4μm, and the axial runout error is 5-7μm, while the radial runout error of P2 grade bearings is 1-2μm, and the axial runout error is 2-5μm. These bearings are commonly used in applications with extremely stringent error requirements, such as the medical and aerospace fields. Hydrostatic bearings utilize oil film support to achieve contactless operation and provide the highest precision.

 

Guideways

* Hard Ways: Cast iron guideways with plastic coating or hardened steel, offering high rigidity and heavy load capacity.

* Linear Guides: High-precision grinding-grade linear guides, with low friction and high speed, commonly used for the feed axis.

* Hydrostatic Guides: Used in ultra-heavy-duty or ultra-high-precision models, featuring oil film floating and zero friction.

 

Work Rest Blade

* Material: Carbide (tungsten steel) or high-speed steel.

* Function: Directly supports the workpiece; it must be wear-resistant and have a smooth surface to prevent scratches.

 

Protection and Housing

* Stainless steel or galvanized steel plate: Used for protective covers, rust-proof and corrosion-resistant, and easy to clean grinding waste fluid.

* Engineering plastics: Used for cable chains, cable protection, etc.

 

 

 

Product Name	High Precision CNC Centerless Grinding Machine
Model	MX-M400
Plunge-feed
Grinding Diameter	5-200mm
Max. Grinding Length	390mm
Through-feed
Grinding Diameter	5-200mm
Grinding Wheel Specification	P600x400x305mm
Regulating Wheel Specification	P350x400x203mm
Grinding Wheel Speed	1100r/min
Regulating Wheel Speed (stepless)	10-200r/min
Regulating Wheel Frame Swivel Angle
Vertical	-2°- +5°
Horizontal	-1°- +3°
Regulating Wheel Min Feed Amount	0.001mm
Grinding Wheel Dresser Min Feed Amount	0.001mm
Height From Centerline of Gri. Wheel & Reg. Wheel To Work Rest	200mm
Water Flow	200L/min
Total Power
Grinding Wheel Motor	30KW
Regulating Wheel Motor	3KW
Water Pump Motor	0.45KW
Lubrication Pump Motor	0.09KW
Magnetic Coolant Separator Motor	0.18KW
Power Supply	3N 50Hz 380V
Machine Dimension (LxWxH)	3300x1780x1900mm
Machine Weight	About 9000Kg
Accuracy (Standard Bars)
Roundness	0.001mm
Cylindricity	0.0018mm
Roughness	Ra0.16μm