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PM-728VT ULTRA PRECISION BENCH TOP VERTICAL MILLING MACHINE with CNC U - $7,200 (Eau Claire)
condition:
like new
make / manufacturer:
Precision Matthews
model name / number:
PM-728V-T with CNC upgrade
size / dimensions:
30x35x42
QR Code Link to This Post
Item Specifics:
Condition: Like New (Excellent working condition, professionally upgraded and maintained)
Brand: Precision Matthews
Model: PM-728VT
Machine Type: Vertical Mill
Control: CNC (Upgraded with Centroid Acorn Controller)
Spindle Taper: R8
Power Source: Electric (110V, 1PH, 60Hz)
Voltage: 110V
Phase: Single
Spindle Horsepower: 1 HP
Table Size: 28" x 7"
X-Axis Travel: 19"
Y-Axis Travel: 10"
Z-Axis Travel: 16"
Quill Travel: Not used for CNC
Spindle Speed: 75-4000 RPM (Variable Speed)
Max Drilling Capacity: 0.75"
Max End Milling Capacity: 1"
Max Face Milling Capacity: 3"
Country/Region of Manufacture: Taiwan
Unit Weight: Approx.420 lbs (machine with CNC upgrade only, Accessories not included)
Description:
For sale is a Precision Matthews PM-728VT Ultra Precision Variable Speed Milling Machine, fully upgraded to CNC operation. This benchtop mill is renowned for its exceptional build quality, made 100% in Taiwan to exacting standards that surpass anything else in its class. It's heavier (approx. 420 lbs), more rigid, and offers larger travels than comparable models, making it ideal for serious hobbyists, prototypers, or small shop owners who demand precision and reliability.
This machine has been professionally upgraded with the official Precision Matthews Ultra Precision CNC Ballscrew Kit (SKU: CNCBallScrewKit-PM-728VT-UP), Teknic Clearpath integrated servo motors, and a Centroid Acorn CNC controller. The upgrades transform it into a high-performance CNC mill capable of accurate, repeatable machining with advanced probing capabilities, without compromising the original 5-year warranty (as the kit is OEM-approved and bolt-on). No modifications or drilling were required for installation—it's a true plug-and-play conversion.
Spindle encoder added for hard tapping. Innovative design that still fits under the pulley cover. See image number 4
Key Original Features of the PM-728VT:
Ultra-high quality construction with super precise way grinding, hand-scraped mating surfaces, and gibs for unmatched smoothness and precision.
Triple bearing support on the spindle (angular contact bearings) for cool, precise operation at high speeds.
Worm drive gear for easy head tramming (tilts ±90° left/right).
Enlarged Z-axis column for superior rigidity.
Main Z-axis column mounted with 4 bolts for enhanced stability.
Bolt mounting pattern: 10-1/8” W x 17-1/2” D (1/2” holes).
Bottom casting dimensions: 20-3/4” D x 12-1/2” W x 3-1/4” H at mounting surface.
Footprint: 30" depth x 41" width x 44.5" height (without stand; 76.5" with optional stand, not included).
Table T-slots: 1/2" (12mm).
Spindle to table max: 16.25".
Spindle to column: 8.5".
Quill diameter: 2.362" (60mm).
Power: 1 HP, 110V, single phase, 20A circuit required (NEMA 5-15P plug on ~5' cord).
CNC Upgrade Details:
Ultra Precision CNC Ballscrew Kit: Double-nut rolled ball screws on all 3 axes (16mm OD, 5mm lead, right-hand thread, C5 accuracy grade) to minimize backlash. Cast iron mounting brackets for rigidity, with angular contact bearings (7001VV) on all axes. Includes safety covers, couplers (3/8" for X/Y motors, 1/2" for Z), mounting hardware, and full installation instructions. This kit maximizes precision and stiffness, with no impact on the machine's warranty. Current price: $1,199.00.
Teknic Clearpath Servos: High-performance integrated servo motors for smooth, powerful axis control:
2 x CPM-SDSK-2321S-ELS (NEMA 23 for X and Y axes) - Approx. $361 each.
1 x CPM-SDSK-3421P-ELS (NEMA 34 for Z axis) - Approx. $419.
Powered by 1 x IPC-5 (350/500W DC power supply) with IPC35-CABLE110 AC power cable - Approx. $248 + $14.
Includes 3 x CPM-CABLE-PWR-MS120 (10 ft DC power cables) - Approx. $19 each.
3 x CPM-CABLE-CTRL-MU120 (10 ft controller cables) - Approx. $23 each.
Centroid Acorn CNC Controller: A robust, user-friendly CNC brain that handles G-code, conversational programming, and more.
Perfect for beginners or pros, with Ethernet connectivity, support for probes, tool changers (not included), and seamless integration with the servos. This setup allows for automated, precise milling operations. Current price: Approx. $299 (base kit).
CentroidCNC Wireless MPG Control Pendant: Manual control of the X, Y and Z Axis. $299
Acorn Mill "Pro" Software License: $175
This upgraded mill is in excellent condition, with low hours of use, purely for testing only. It's been meticulously maintained and is ready for immediate setup in your shop. Ideal for machining metals, plastics, or composites with CNC accuracy. Manual operation is still fully functional if desired.
What's Included:
PM-728VT mill base with all standard accessories (chip tray, way covers, drawbar, Quill DRO, etc.).
Full CNC ballscrew kit installed.
Teknic Clearpath servos, power supply, and all cables as listed.
Centroid Acorn controller (pre-configured for this machine).
CentroidCNC Wireless MPG Control Pendant
All accessories shown in the images, which are new and unused
Not Included:
Stand (optional), DRO options (beyond the quill DRO), additional tooling, computer for CNC control, or shipping crate (can arrange if needed). No 3-axis DRO was added, as the CNC handles positioning.
Why Buy This?
This is a turnkey CNC mill at a fraction of the cost of a new one. Original mill price starts at $3,699.99, ballscrew kit at $1,199, Teknic components approx. $1,529, Acorn controller approx. $299, WMPG-6 Wireless CNC Control Pendant at $299, Centroid CNC "Pro" Mill Software License at $175 and accessories values at over $2,000—total value over $9,200. There are several YouTube videos on how to do this conversion and in each case, hundreds of hours are required to setup and configure this machine to achieve micrometer level accuracy. Save big on a proven, upgraded setup with advanced probing capabilities!
Local pickup preferred in [Eau Claire, WI] due to weight (approx. 450 lbs with upgrades). Shipping available via freight—buyer pays actual cost (est. $200-500 in 48 states; liftgate $79 extra if needed). Contact for quotes. No returns, but happy to assist with setup. I will put this on a pallet if required.
Questions? Message me! Serious buyers only.
About this item: Milling machine was purchased for a project that never materialized. Machine will have to be disassembled to ship, so be prepared to reassemble, which is a lot of work. I will label all cables.