NK Engineering Services supplier of PCB Drilling spindles, CNC Spindles, CNC ATC Spindle Motor, Water Cooled Spindle Motor, CNC Router spindle, Milling spindles, Bangle engraving spindles

PCB Air-Bearing 160k rpm Spindle

The PCB-160A ATC is a machining spindle with high-performance accuracy and offers a maximum speed of 160,000 rpm. The spindle's prevailing AC motor and front thrust provide stability with precision; hence these are a great choice for CNC machine tools.

NK Spindles air-bearing spindles offer unparalleled precision and performance, engineered to deliver ultra-low error motions, exceptional stiffness, and high-speed capabilities. These cutting-edge spindles are ideal for applications such as semiconductor manufacturing, glass grinding micro-machining of non-ferrous materials, and PCB drilling, where precision and efficiency are paramount.

The spindle structure is ATC mechanism, and the tool collet is 3.175mm/6mm

Application:

CNC PCB Drilling Machine
CNC Sheet Metal Drilling
CNC Mobile Tempered Glass Engraving
CNC Mobile Body and cover Engraving
CNC Glass Epoxy Engraving
CNC Denture Machine
CNC Glass grinding
Micro-machining of non-ferrous materials

Air bearings (aerostatic bearings) are a gas film (air) uses a thin layer of air to distinguish two surfaces in motion, eradicating the requirement of traditional lubricants besides permitting for frictionless movement. This strategy allows the moving parts to work efficiently and silently, without making heat or experiencing wear, and manufacture them appropriately for applications that need precision and dependability, like precision measurement, machining, and semiconductor manufacturing.

The air-bearing spindle being a frictionless project permits vastly precise motion as well as reduced vibration, hence, making it a supreme candidate for highly precise applications like semiconductor manufacturing, and medical device assembly. In addition, it has superior quality, improved reliability, smooth motion, and stability. Overall, these spindles are proficient of implementation in complex tasks with ease.

High Rotational Accuracy – Bearing air films average any surface features to a low level enabling error motions of less than 0.05 um TIR to be achieved.
Low Vibration – All air spindles are balanced to better than 0.001 gm cm.
High Dimensional Stability – Low bearing friction and water cooling enables negligible thermal growth to be achieved.
High Speeds – Again low bearing friction and the use of water cooling allow bearings to operate at extremely high surface speeds.
High Stiffness - The small clearances inherent to air bearings enables them to be designed with high static stiffness. Air bearings also enable large shaft diameters to be used which enhances the stiffness of spindle assemblies.
Increased Bearing Life – The absence of metal-metal contact ensures an unlimited bearing life provided the air supply is maintained clean and free from oil and water.
Improved Surface Finish – Due to the inherently high accuracy of rotation of air bearings and low vibration, air spindles use in machining applications can produce surfaces with mirror finishes.
Cleanliness – Not requiring any liquid lubricants air spindles are suitable for use in clean rooms.
Ease of Maintenance – Air spindles do not require servicing. Air supplies must however be maintained.

Model	PCB-160A	Speed range（ rpm）	20,000-160,000
（ V） Voltage Range	189	Frequency Range（ Hz）	334-2,667
Max Currency（ A）	3	Max. Power （ Kw）	0.85
Bearing Type	Air Bearing	（ Kg） Spindle Weight	4.1
No.	Parameter	Value
1	Static Run-out（ µm）	≤2.0
2	Dynamic Run-out（ µm）	≤8.0
3	Vibration（ mm/s)	≤１ .0
4	Spindle inner cone runout （ µm）	≤１ .0
5	Axial load test（ kgf）	≥22
6	Radial load test（ kgf）	10
7	Motor winding insulation grade	≥500MΩ(H Grade ）
8	Motor winding withstand voltage test	1500V/1min Withstand voltage test

9	（ Ω） Power line resistance	2.5±0.2
10	（ KΩ）Temperature sensor resistance	R≤100（ At 25℃ ）
11	（℃） Coolant temperature scope	20±2
12	Coolant pressure (MPa)	0.3≤P≤0.5
13	（ L/min） Cooling water flow	≥2.8
14	（ L/min）Cooling oil flow	≥3.0
17	(kgf/cm²) Spindle working air pressure	5.6--6.5
18	（ L/min） Air flow for spindle	88-94（ At 0.6 MPa ）

Model no. PCB-160A

PCB Air-Bearing 160k rpm Spindle

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