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CNC Retrofit » CNC Cutting Systems » 4 HP Plug and Play Spindle / VFD System
4 HP Plug and Play Spindle / VFD System
4 HP Plug and Play Spindle / VFD System

Our 4 HP (3 kW) Plug and Play Spindle / VFD System is a production-level cutting solution that offers a significant capability upgrade over a standard router by providing a true 4 HP of cutting power, allowing for faster and deeper cuts.

It is preconfigured to run with any of our CNC Electronics Systems and Kits, or can be integrated into most other CNC electronics configurations.



Key Features:
  • Plug and Play operation with our current CNC Electronics Systems and Kits (retrofit options available for previous configurations).
  • More power. Unlike routers, which advertise only peak power ratings that are never actually achieved under real-use, our 4 HP (3 KW) Spindle offers sustained cutting power throughout the RPM range (6000 - 24,000 RPM) regardless of workload. This allows for much faster operation and greater cutting pass depth.
  • Longer lasting than a router, designed for continuous use in production environments.
  • Operates at quieter volumes than most typical routers.
  • High-quality air-cooled spindle offers simple, reliable and durable operation including internal thermal protection (does not require a liquid cooling solution).
  • ER20 Collet system accepts up to 1/2" shank tooling.
  • Requires only standard/residential single-phase 220VAC power (approx. 11A draw, standard 30A circuit recommended).

Package Includes:
  • 4 HP (3 kW) Air-Cooled Spindle
  • 1/2" ER20 Collet
  • VFD Enclosure
    • Delta variable-frequency drive (VFD)
    • 10' Power cord (with plug for L6-30 style receptacle)
    • 30 Amp Breaker (for protection of the inverter)
    • Industrial Rotary switch with locking feature
    • Industrial high-flex cable with locking M23 connection between VFD enclosure and spindle.
    • Control cable with 14-pin locking connection between VFD enclosure and CNC control electronics.
    • 300mm x 300mm x 200mm Industrial NEMA Enclosure
    • Cooling Fan

4 HP CNC Spindle and VFD Plug and Play System from Avid CNC

Spindle Comparison

Evaluating the Material Removal Rate (MRR) is an indicator of the efficiency of a cut. This is a combination of depth-of-cut, width-of-cut, and feed rate.

Comparison tests were conducted in maple hardwood with a PRO Series CNC machine, NEMA 34 motors, and an Amana RC-2241 1.5" tool. Chipload was set to the tool manufacturer's recommended maximum of 0.008 inches per tooth.

4 HP (3 kW)
Spindle / VFD
8.7 HP (6.5 kW)
Spindle / VFD
MRR (in3/min) 95 219
Spindle Speed (RPM) 24,000 24,000
Tool RC-2241 RC-2241
Depth-of-cut (in) 0.1625 .375
Width-of-cut (in) 1.5 1.5
Feed Rate (in/min) 390 390


PRO60120 with 4 HP Plug and Play Spindle / VFD system
4 HP Plug and Play Spindle / VFD System
shown on a PRO60120 5' x 10' CNC machine with NEMA 34 motors

Recommended Accessories:

Compatibility Options
The compatibility options available below include additional components for integrating this system with our previous CNC electronics systems, or with DIY CNC electronics. Please refer to our Plug and Play Spindle / VFD System Setup and Retrofit Guides for detailed installation and setup instructions for each of these options:
  1. CRP800 - Our current Plug and Play CNC Control Systems (NEMA 23 and NEMA 34) are "Spindle Ready" and require no additional components to work with this Spindle / VFD system.
  2. CRP500 / MX4660 - this option includes a gland connector for integrating with either our previous NEMA 23 Plug and Play Systems (systems with CRP5042 digital drivers that were built prior to February 2015), or with the Leadshine MX4660 4-Axis Stepper Driver.
  3. CRP300 - this option includes an additional PMDX-107 Isolated Speed Control card and gland connector for integrating with our previous NEMA 34 Plug and Play Systems (systems with Gecko G201X or G203V drivers, and PMDX-126 breakout board).

Documentation:



$1,995.00
Configuration and Options:
Compatibility Option:
This product was added to our catalog on February 11, 2021.
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