Used Keruisi K-540i CNC Machining Center | China

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Product Highlight

Equipped with a 30,000 RPM HSK-E40 built-in spindle, 20-tool automatic tool changer, linear motor drive and high-precision feedback system, this machine is designed for fast and accurate machining of precision molds, electrodes, 3C components and complex precision parts.

Product Description

Used 2023 Keruisi K-540i high-speed high-precision CNC vertical machining center from China. Equipped with a 30,000 RPM HSK-E40 built-in spindle, 20-tool automatic tool changer, linear motor drive and high-precision feedback system, this machine is designed for fast and accurate machining of precision molds, electrodes, 3C components and complex precision parts.

With a 500 × 400 × 200 mm working travel, mineral-cast machine structure and high-speed spindle, the K-540i is a practical option for manufacturers looking for high-precision CNC machining capacity at a lower investment than purchasing a new machine.

Technical Specifications

Specification	Keruisi K-540i
Machine Type	High-Speed High-Precision Vertical Machining Center
Condition	Used / Pre-Owned
Year of Manufacture	2023
X-Axis Travel	500 mm
Y-Axis Travel	400 mm
Z-Axis Travel	200 mm
Spindle Nose to Table Distance	185–385 mm
Table Size	500 × 400 mm
Maximum Table Load	300 kg
Table Configuration	4 T-slots, nominal 10 mm, 100 mm spacing
Spindle Type	Built-in Motor Spindle
Maximum Spindle Speed	30,000 RPM
Spindle Taper	HSK-E40
Spindle Motor Power	11 kW
Maximum Tool Clamping Diameter	16 mm
Rapid Traverse X/Y/Z	60 / 60 / 60 m/min
Cutting Feed Rate	1–30,000 mm/min
Max. Acceleration X/Y/Z	0.6 / 0.7 / 1.0 g
Tool Holder	HSK-E40
Tool Magazine Capacity	20 Tools
Maximum Tool Diameter	55 mm
Maximum Tool Diameter with Adjacent Pocket Empty	115 mm
Maximum Tool Length	140 mm
Maximum Tool Weight	4 kg
Tool Selection	Random / Nearest Tool
Tool-to-Tool Change Time	Approx. 1.55 sec
Positioning Accuracy	≤0.003 mm
Repeat Positioning Accuracy	≤0.002 mm
Required Air Pressure	6 kgf/cm²
Power Supply	3-Phase 380 V
Rated Capacity	10 kVA
Approx. Machine Dimensions	3700 × 3290 × 2700 mm
Machine Weight	Approx. 5,500 kg
Serial Number	GDK302200043

Main Equipment / Configuration

Based on the supplied machine specification sheet, the K-540i configuration includes:

Mineral casting / artificial marble machine bed
30,000 RPM HSK-E40 built-in spindle
20-position disc-type automatic tool changer
X/Y/Z-axis linear motor drive
Linear scales for position feedback
Linear motor cooling system
Spindle cooling system
Pneumatic circuit control
Spindle taper air cleaning
Electrical cabinet air conditioning
LED work light
Manual pulse generator
Three-color status light
Lubrication system
Fully enclosed machine guarding
Coolant filtration tank

The manufacturer positions its high-precision CNC equipment for areas including 3C, mold machining, optics, automotive components and other precision manufacturing applications.

Applications & Suitable Machining Scenarios

The used Keruisi K-540i CNC machining center is particularly suitable for workshops that require high spindle speed, fast axis movement and precise contour machining.

Precision Mold Machining

Suitable for small and medium high-precision molds, mold inserts, cavities, cores and detailed contour finishing.

Copper & Graphite Electrode Machining

The 30,000 RPM spindle makes the machine suitable for machining small tools and detailed electrode geometries used in EDM mold production.

3C & Electronics Components

Suitable for precision aluminum components, housings, fixtures and small structural parts used in consumer electronics manufacturing.

Optical & Precision Components

High positioning and repeatability specifications make the machine suitable for parts requiring fine contours, accurate dimensions and good surface quality.

Automotive Precision Parts

Can be used for small automotive components, fixtures, prototype components and other precision-machined parts.

Complex 3D Surface Machining

The combination of a high-speed spindle and high-response axis system makes the machine suitable for detailed 3D contours, mold surfaces and precision finishing work.

The manufacturer's published application areas also include 3C, mold processing, optics, automotive, aerospace and medical precision manufacturing.

FAQ

Is this Keruisi K-540i a new machine or a used CNC machining center?

This is a used Keruisi K-540i CNC vertical machining center, not a new machine. The machine nameplate shows a manufacturing date of September 2023. Buyers looking for a relatively recent high-speed CNC machine can consider it as an alternative to purchasing new equipment.

What spindle is installed on this used K-540i?

This K-540i is specified with a 30,000 RPM built-in spindle and HSK-E40 tool interface. The high spindle speed is particularly useful for small-diameter tools, precision mold finishing, electrodes and high-speed machining applications.

What is the machining travel of the Keruisi K-540i?

The machine provides 500 mm X-axis travel, 400 mm Y-axis travel and 200 mm Z-axis travel, with a 500 × 400 mm worktable. It is well suited to small and medium precision components rather than large heavy workpieces.

Is this machine suitable for precision mold and electrode machining?

Yes. Based on its 30,000 RPM spindle, HSK-E40 tooling, linear motor configuration and stated positioning accuracy, the K-540i is designed for high-speed precision machining and is particularly suitable for molds, electrodes and detailed precision components.