Name: Accu-Pro VMC Ball Screw Mill with MASSO Touch Controller
SKU: 56910
Availability: InStock

Product Description

About the 18″ Accu-Pro VMC Benchtop Mill System with Ball Screws

This machine is based on our 18″ NexGen 5800-series benchtop mill. The 18″ mill base with ball screws comes with all-new saddles developed for the ball screws. The X/Y-mill saddle has been beefed up to accommodate the larger ball screws, and it has an electroless nickel/Teflon coating. The nickel coating offers a hard surface that is rustproof, while the Teflon provides a friction coefficient of .1-.2u for smoother movement of the saddle and the table. The Accu-Pro Mill also includes 36V closed-loop stepper motors with #23 NEMA frames, motor mounts with high-torque couplings, and C5 bearings in the headstock for smoother spindle operation.

Ball Leadscrew Specifications

Rolled Ball Screw with BSH Nut
10mm Diameter, 2mm Lead
C7 Accuracy*, P1 Preload
*C7 accuracy has a linear tolerance of 50 micrometers / 300mm or .002″ / 12.0″.

The ball screws are only available in metric.

About the Sherline/MASSO CNC G3 Touch Controller

The MASSO Touch Controller with power supply and spindle drive card allows you to input data to the controller via a state-of-the-art touch screen. With MASSO, you can write your CNC programs on your computer (Windows, Mac, Linux, etc.) and then transfer your program to the controller via a USB flash drive. No more having to use a dedicated operating system like Linux or Mach 4 to control your machine.

The Touch Controller includes:

Industrial cable system from the controller to the machine
36-volt power supply
Touch-controller stand

Do you want to know more about the Sherline/MASSO G3 CNC controller? Here are some resource links for your reference.

The 18″ MASSO Accu-Pro VMC Benchtop Mill System Package includes the following:

18″ mill is fitted with ball screws and all-new saddles developed for the ball screws
A Sherline/MASSO G3 Touch Controller
G-code Spindle Speed Control
An optical encoder
WiFi is standard with the MASSO G3 Touch Controller
Three 36-volt, Closed-Loop, High-Torque Stepper motors with a 70 in/min maximum feed rate
Professional cable wraps and covers for the X- and Y-axis
IGUS E-Chain flexible cable carrier for the Z-axis
MASSO homing sensors on all axes
USB 4 GB flash drive (With software, machine settings, sample programs, and PDF instructions included.)
1-year warranty on all machine components for non-production use. 90-day warranty on CNC and electronic controller-related components

Standard equipment for the CNC Benchtop Mill includes the following:

A powerful 90V DC motor with an electronic speed controller
18″ base
Electroless nickel/Teflon-coated mill saddle
15″ mill column bed with nickel/Teflon coating
Headstock with #1 Morse taper, 3/4 x 16 spindle thread with precision C5 bearings
Headstock spacer block
18.0″ (457 mm) x 2.75″ (70 mm) table with two T-slots
7″ x 18″ tooling plate with three T-slots
Stepper-motor mounts with high-torque couplings
1/4″ Drill Chuck w/ key, #1 Morse arbor with drawbolt
Pulleys, drive belt, three hexagonal keys, spindle bars, gib removal tool, eight-foot three-wire power cord, and instruction manual
Oil reservoirs on the X/Y axes and the Z-axis to help keep critical parts lubricated
Accordion way cover and brass-tube leadscrew cover that keeps chips off of the Y-axis leadscrew

The Axes of Movement of a Sherline 18″ Ball Screw Benchtop Mill.

CNC-ready version shown for reference.
Click on the image for a larger view.

The table left/right movement is referred to as the X-axis. The table in/out movement is the Y-axis. The headstock up/down movement is referred to as the Z-axis. The headstock can also be rotated on its saddle on Sherline mills (#4), the column ram can be moved in and out (#5), and the Z-axis column can be tilted forward and back (#6).

Headstock Options:

Standard #1 Morse Headstock.
More info…

ER-16 Collet Headstock.
More Info…

Software Options:

Available in 3 or 4-axis. If you are not going to use a rotary table now or in the future, select the 3-axis. Select the 4-axis if you are also buying the accessory package with the rotary table. If you are planning on purchasing a rotary table in the future, select the 4-axis software option.

Accessory Packages:

Mill Accessories

Holding Fixtures

P/N 3552 Sherline MB Vise Fixture
P/N 3551 Mill Vise
P/N 3012 Standard Hold-Down Set
P/N 3013 Step Block Hold-Down Set

Mill Tool Holders

P/N Various End Mill Holders
P/N 2078/2079 Jeweler Burr Holders (3/32″ and 1/8″ shafts)
P/N 3081 1″ End Mill Holder – Blank
P/N 3082 2″ End Mill Holder – Blank
P/N 3083 4″ End Mill Holder – Blank
P/N 3073 3/8″ Drill Chuck with #1 Morse Arbor

Mill Tools

P/N 7400/7401 3/8″ Double-Ended End Mill Sets
P/N 3052S Fly Cutter with Straight Shaft
P/N 7620S Single Flute Insert Fly Cutter with Straight Shaft

Rotary Tables

P/N 3700-CNC CNC-Ready Rotary Table
P/N 3710-CNC CNC-Ready Nickel-Teflon Coated Rotary Table
P/N 8720 CNC Rotary Table with 36V Stepper Motor
P/N 8730 CNC Rotary Table with Stepper Motor
P/N 8731 Nickel-Teflon Coated CNC Rotary Table with Stepper Motor
P/N 8700 Rotary Table with CNC Indexer
P/N 8711 Nickel-Teflon Coated CNC-Rotary Table Indexer

The improper use of machine tools and their accessories can result in serious injury. Before using this tool, thoroughly read the instructions and make sure you understand its proper and safe use.	Always wear safety glasses when operating machine tools.
Download PDF Assembly and Instruction Guide	Download PDF Accu-Pro Mill Unpacking and Set-up Instructions
Download PDF MASSO Touch Controller G3 Setup Instructions	Download PDF Sherline/MASSO Controller Spindle Speed Information
Download PDF Accu-Pro Machine Maintenance Instructions	Download PDF Sherline/MASSO 36V Closed-Loop Stepper Motor Specifications

Ball Screw Machine Specifications
Max clearance (table to spindle)	12.875″ (327 mm)
Throat (no spacer)	Adjustable
Throat (w/ headstock spacer)	Adjustable
Travel, X-Axis	12.80″ (325.1mm)
Travel, Y-Axis	11.00″ (279 mm); 8.9″ (226 mm) with the tooling plate attached
Travel, Z-Axis	9.25″ (235 mm)
Hole through spindle	.405″ (10 mm)
Spindle nose thread	3/4″-16 T.P.I.
Spindle nose taper	#1 Morse
Spindle runout of Morse taper	.0005″ or less
Electronically controlled spindle speed range	70 to 2800 RPM
Width Overall*	25.25″ (641.3 mm)
Depth Overall*	Base footprint: 26″ (660.4 mm); With fully extended brass leadscrew cover: 33.25″ (844.5 mm)
Height Overall (Max.)*	29.375″ (746 mm)
Table size	2.75″ x 18.00″ (70 x 457 mm)
Hold-down provision	3 T-Slots (with 7″ x 13″ tooling plate)
Shipping Weight	82 lb. (37.19 kg)
Movements in addition to X-, Y- and Z-axes	Headstock rotation (90° left/right), Column pivot (90° Fwd/Bk), Column travel (In/Out) 5.5″ (140 mm)
Motor	90 volt DC with electronic speed control that accepts any incoming current from 100VAC to 240 VAC, 50 Hz or 60 Hz. Click here for motor specifications
Spindle Speed Range	70-2800 RPM continuously variable by electronic speed control
	*Overall dimensions include motor and speed control
Ball Leadscrew Specifications
Rolled Ball Screw with BSH Nut
10mm Diameter, 2mm Lead
C7 Accuracy*, P1 Preload	*C7 accuracy has a linear tolerance of 50 micrometers / 300mm or .002″ / 12.0″.
Stepper Motor Specifications	Sherline/MASSO 36V, Closed-Loop Stepper Motor Specifications and Troubleshooting PDF
Frame Size	NEMA #23
Shaft	8mm (.315”)
Input Voltage	36V DC
Output Current	4.5A 20 KHz PWM
Pulses/Revolution	800
Maximum Torque	2 N.m (Newton meters), 20.39 kg/cm (kilogram centimeter), 283 oz/in (ounce inch), 17.70 in/lb (inch pound)