Vertical Machining Center for Precision Grinding with Strong Cutting Resistance

• Customization: Available
• Warranty: 1year
• Application: Metal
• Model NO.: MGK74100CH
• Process Usage: Metal-Cutting CNC Machine Tools
• Movement Method: on-Line Dynamic Balancing of Grinding Wheel
• Control Method: Open-Loop Control
• Numerical Control: CNC/MNC
• Processing Precision: ≤0.004 mm
• Performance Classification: High-End CNC Machine Tools
• Certification: ISO 9001
• Condition: Used
• Roundness of Machined Workpiece: ≤0.004 mm
• Cylindricity of Machined Workpiece: ≤0.006/300 mm
• Flatness of Machined End Face: ≤0.005 mm
• Perpendicularity of End Face to Inner an: ≤0.01 mm
• Surface Roughness Ra: ≤0.40 μm
• Worktable Dia: 1000 mm
• Z-Axis Strock: 650/850 mm
• Bearing Capacity of Worktable: 3000 Kg
• Rotation Speed of Worktable: 80 R/Min
• Transport Package: Wooden Case
• Trademark: GENERTEC
• Origin: China
• Production Capacity: 10

Product Description

MGK-CH  Series CNC Vertical Compound Grinding Center

The MGK-CH  series of CNC high-precision vertical compound grinding centers features a novel and compact structural design, good rigidity, and strong practicability, achieving a high degree of integration of high precision, high speed, and high performance. This series of grinding machines can grind inner holes, outer circles, and end faces in one clamping. It has functions such as automatic tool changing, automatic workpiece measurement, and on-line dynamic balancing of the grinding wheel, enabling a wide processing range.

Specification

Main Features and Performance

This series of machine tools is a high-efficiency and high-precision composite machining machine tool for the sealing surfaces of triple-eccentric hard-sealed butterfly valves in the valve industry. Meanwhile, it is also a characteristic machine tool applicable to industries such as large bearings, gear rings, aerospace, locomotives and rolling stock, ships, and bearings.

It adopts a double-saddle design. The grinding saddle can perform follow-up grinding, and the multi-functional saddle can realize composite machining such as turning, drilling, milling, boring, and grinding.

High-performance and high-rigidity overall machine structure design technology.
Double-saddle structure design and manufacturing technology.
Grinding Z-axis swingable angle follow-up grinding technology.
Internal feedback closed hydrostatic composite bearing support technology for the worktable.
Worktable dual-drive backlash elimination, precise indexing, and hydraulic clamping technology.
Special fixture structure design and manufacturing technology for triple-eccentric butterfly valves.

Technical Specifications

(Custom configurations available upon request.)

Items	Unit	MGK74100CH	MGK74125CH	MGK74160CH
Worktable Dia.	mm	1000	1250	1600
Z-axis Stroke	mm	650/850	650/850	650/850
Bearing Capacity of Worktable	kg	3000	3000	4000
Rotation Speed of Worktable	r/min	80	80	60
Items	Unit	MGK74200CH	MGK74250CH
Worktable Dia.	mm	2000	2500
Z-axis Stroke	mm	650/850	650/850
Bearing Capacity of Worktable	kg	6000	6000
Rotation Speed of Worktable	r/min	40	40

Radial Runout of Worktable Rotation	mm	0.002
Axial Runout of Worktable Rotation	mm	0.002
Radial Runout of Grinding Wheel Spindle	mm	0.002
Axial Runout of Grinding Wheel Spindle	mm	0.002
Positioning Accuracy of X/Z Axes	mm	0.008
Repeat Positioning Accuracy of X/Z Axes	mm	0.004

Product Configuration
Z-axis Guide Rotation B-axis Rotation B-axis of Z-axis Guide		±25
Grinding Spindle Type		Direct-connected mechanical spindle of motor / HSK or BT tool-changing spindle for grinding / Hydrostatic and dynamic electric spindle
Number of Tool Head		1 or 2
Double-grinding Spindle Type		One vertical and one turning type / One vertical and one horizontal type
CNC System		Fanuc
Table Type		Full hydrostatic type / Axial hydrostatic radial bearing type
Table Drive		Torque motor / Unloading belt
Worktable Clamping Mode		Four-jaw chuck / Electromagnetic chuck / Special face plate
Dresser Type		Fixed diamond pen dresser / Diamond roller dresser / Arc dresser
		Servo linear axis full closed loop (optional)
		On-line measurement (optional)
Protection Type		Semi-enclosed protection / Fully enclosed protection

Machining accuracy of the machine tool

Machining Precision of the Machine Tool
Roundness of the machined workpiece: ≤0.004 mm
Cylindricity of the machined workpiece: ≤0.006/300 mm
Flatness of the machined end face: ≤0.005 mm
Perpendicularity of the end face to the inner and outer circles: ≤0.01 mm
Surface roughness Ra: ≤0.40 μm

Main Features and Performance

1.An 8-axis controlled vertical compound grinding center adopting the Siemens 840Ds1 numerical control system, with an independently developed man-machine dialogue interface.
2.Incorporating high-precision torque motor direct-drive hydrostatic worktable, synchronous motor high-speed electric spindle, and high-speed tool interface technology.
3.Equipped with double spindles and an automatic measurement system, enabling continuous precise indexing and conversion of spindle stations.
4.Featuring functions such as automatic tool changing, automatic workpiece measurement, and on-line dynamic balancing of the grinding wheel.
5.The four-station tool magazine realizes the automatic tool changing function.
6.Mainly applied to high-precision grinding processing in various industries such as aerospace, precision machine tools, ships, bearings, valves, and new energy.
7.Capable of grinding various materials like cast iron, carbon steel, stainless steel, nickel-titanium high-temperature alloys, etc., and can complete grinding of multiple positions and shapes such as inner holes, outer circles, end faces, and grooves in one clamping.

Company Profile

Genertec Tianjin No.1 Machine Tool Co., Ltd. belongs to China General Technology Group, a central enterprise.

The company was formerly known as Tianiin No.1 Machine Tool Works, one of the 18 Lohans enterprises in themachine tool industry in the early days of the founding of New China, and Tianjin Jinyi Grinding Machine Co., Ltd. ithas accumulated more than 70 years of history in the gear machine tool and grinder industry, and is the backboneenterprise in China's machine tool manufacturing industry.

Why Choose Us?

Other Products

The company focuses on developing extended products in the industrial chain such as gear machining machines, special grinding machines, and precision transmission devices, and provides customers with professional comprehensive solutions for gear machining. The products are sold in 30 provinces, municipalities directly under the Central Government, and autonomous regions in China, and are exported to more than 20 countries including Germany, Spain, the United States, Sweden, Brazil, Japan, and India. It is a backbone manufacturer in China for producing complete sets of machining machines for spiral bevel gears. The company has world-class high-end precision machining and testing equipment, and an experienced R & D team and a main production force, and has passed the ISO 9001 quality management system certification.

The leading products include: 18 major categories and more than 30 series of products such as CNC gear shapers, gear milling machines, gear broaching machines, gear grinders, gear shapers, gear lapping machines, and complete sets of bevel gear machining equipment; as well as 6 series of products including horizontal-spindle rectangular-table surface grinders, horizontal-spindle rotary-table surface grinders, vertical-spindle rotary-table surface grinders, CNC form grinders, floor-type guideway grinders, and high-precision CNC grinding centers.

FAQ

Q: What’s the lead time for orders?
A: Standard models ship in 15–30 days; customized units require 30–45 days.

Q: Do you provide after-sales service overseas?
A: Yes, we have partnered service centers in key regions.

Q: Can I request a customized bucket size?
A: Absolutely! We offer tailored attachments.

Q: What documents do you provide for export?
A: Full export package (Commercial Invoice, Packing List, Bill of Lading, COC, etc.).

Q: How do I place an order?
A: Contact us via email/phone for a quote, then confirm with a PO.