When choosing a water cooled CNC spindle, reliability, speed, noise level, and compatibility with VFDs are key. This guide highlights five top options and provides a buying guide to help you pick the right spindle kit for engraving, routing, or milling non-metallic materials.
Product Summary
- RATTMMOTOR 2.2KW Water Cooled Spindle Kit (110V) – 0-24000 RPM with ER20 and 80mm mount
- HY HUANYANG Water Cooled CNC Spindle Milling Motor 110V 2.2KW – 24000RPM
- VFD CNC Spindle Kit by HY HUANYANG – 220V, 2.2KW, ER20, 80mm, 75W Pump
- Zhong Hua Jiang CNC Spindle Motor Kits 220V 2.2KW – 80mm, ER20, 0-24000RPM
- RATTMMOTOR CNC Spindle Motor Water Cooled 2.2KW – 80mm, ER20, 24000RPM
RATTMMOTOR 2.2KW Water Cooled Spindle Kit
The RATTMMOTOR kit combines a 110V water-cooled 2.2KW spindle with a 2.2KW VFD and an 80mm spindle mount. The spindle runs up to 24000 RPM and uses an ER20 collet. It provides a precision range with stated runout under 0.01mm and is designed for clockwise rotation only. The included aluminum 80mm mount offers durability and stability for CNC routers and engraving machines. The VFD is configured to support 110V input (single or three-phase) and can be connected directly, with optional parameter adjustment according to the included instructions.
Key Features
- 2.2KW water cooled spindle motor, 0-24000 RPM
- AWG 80mm aluminum mount; ER20 nut and collet included
- VFD parameters set for immediate use; 110V input, 3-phase output
- Runout under 0.01mm; clockwise rotation only
HY HUANYANG 110V Water Cooled Spindle Milling Motor
This 110V, 2.2KW water cooled spindle offers high-speed operation up to 24000 RPM and uses four P4 bearings for enhanced torque and durability. It is well-suited for non-metallic engraving andWoodworking tasks. The spindle emphasizes precision and rust resistance, making it a robust option for long-term use in hobbyist and small-shop CNC setups. The recommended operating range is within 8000-24000 RPM to maintain efficiency and minimize electrical stress.
Key Features
- 4-piece high-precision P4 bearings
- Max 24000 RPM; recommended 8000-24000 RPM
- Ideal for wood engraving and similar non-metallic work
VFD CNC Spindle Kit by HY HUANYANG
This kit pairs a 220V 2.2KW VFD with a Φ80mm 24000RPM ER20 spindle, included water pump, clamp mount, and 5 meters of water pipe. The package is designed for straightforward assembly with pre-programmed VFD settings so the system can run soon after setup. Users can expect low noise and reduced electromagnetic interference due to the integrated design, which makes it a convenient option for noise-sensitive spaces.
Key Features
- Pre-programmed VFD with ready-to-connect wiring
- Includes 75W water pump and 5m water pipe
- Low noise and low EMI design
Zhong Hua Jiang CNC Spindle Motor Kits 220V
This kit includes a 220V 2.2KW spindle with a clamp mount, ER20 collets (1mm-13mm), a water pump, and related piping. It emphasizes quiet operation and extended bearing life with upgraded steel bearings. The runout is specified under 0.005mm, providing high-precision performance suitable for a range of CNC router applications. The VFD is pre-soldered, enabling quick setup and minimal assembly time.
Key Features
- Low noise and extended bearing life
- Runout under 0.005mm
- Pre-soldered wiring for quick setup
RATTMMOTOR CNC Spindle Motor Water Cooled 2.2KW
This model features a 220V, 2.2KW water-cooled spindle with an ER20 collet and 80mm diameter. It operates at up to 24000 RPM and runs at 400Hz with runout under 0.01mm. The user-friendly wiring guide explains how to connect the inverter’s U, V, W inputs and ground. It is designed for non-metallic engraving and projects such as wood carving and advertising engravings, offering reliable performance in compact CNC setups.
Key Features
- Easy-to-follow wiring diagram for inverter connections
- 0-24000 RPM, 400Hz, 2.2KW power
- ER20 collet; 80mm diameter mounting
Zhong Hua Jiang 110V 2.2KW Spindle Kit
This 110V bundle includes a 2.2KW 80mm water cooled spindle, a corresponding VFD, clamp mount, ER20 collets (1mm-13mm), water pump, and connecting accessories. The kit emphasizes easy assembly with pre-wired connections and a pre-programmed VFD, reducing setup time. It aims to deliver quieter operation and greater stability through upgraded bearings and precision balance technology.
Key Features
- 110V input; pre-programmed VFD
- Includes ER20 collets and clamp mount
- Low noise with improved bearing design
Buying Guide: Selecting A Water Cooled CNC Spindle
Consider these factors to choose the right spindle for your CNC router or engraving machine:
- Voltage and compatibility: Ensure the spindle and VFD match your power supply (110V or 220V) and that your controller supports the spindle’s drive type (three-phase output or single-phase input).
- Power and speed range: A 2.2KW spindle with up to 24000 RPM is suitable for non-metallic engraving, woodworking, and light milling. Higher RPMs enable cleaner finishes on delicate materials but require precise feed rates.
- Spindle bearings and balance: Look for pre-balanced spindles and four-bearing configurations (P4 or equivalent) for durability and smoother operation.
- Runout and accuracy: Target runout under 0.005 mm for high precision; this affects the quality of cuts and engraving.
- Cooling method and maintenance: Water cooling reduces heat build-up during long runs, but requires a reliable water pump and leak prevention.
- Mounting compatibility: Ensure the mount is 80mm (standard) and that ER20 collets are included or available. Check overall dimensions and compatibility with your machine’s bed.
- Noise and EMI: Some kits emphasize low noise and EMI reduction, which matters in workshop environments.
All five selected options provide ER20 collets and similar component kits, with differences in voltage, pump inclusion, and pre-programmed VFDs. When evaluating, compare the total system compatibility with your CNC controller and the materials you intend to work with. Consider future expandability if you plan larger projects or metal-compatible materials, which may require different spindle specifications.