Resources

Documents

Videos

PCNC 770 Moving Kit Video

PCNC 770 CNC Mill

Location: Information > Products > PCNC 770 Mill > Product Information

PCNC 770: The New Standard for Benchtop CNC Milling Machines

Tormach developed the PCNC 770 as an alternative to the expensive underpowered benchtop CNC mills typically encountered in R&D, Prototyping. Product Design, Education, Hobby CNC and other non-traditional machine shop environments. Our concept was to create a benchtop mill with power and rigidity to do real work, while still retaining all the important features that make a CNC benchtop milling machine attractive in the first place: small size, portability, and minimal input power.

Key Features: PCNC 770 Benchtop CNC Mill

10000RPM 1.0HP Dynamically Balanced Spindle
120 VAC 50/60 Hz Primary Power Requirement (standard line voltage in North America)
660 lbs with cast iron frame. (Machine weight, excludes stand and accessories)
Unique Knock-down Design allows for installation in basement or other restricted spaces
Suitable for Benchtop use / Optional Stand available
Coolant-Ready / Optional Coolant Kit available
Same Design Heritage as the PCNC 1100. Read our original PCNC whitepaper here.

PN: 32084

Base Price: $6,850.00

Shop Now

click to view slideshow

Purchase a Tormach gift certificate in any quantity you like.

Submit projects and check out other customers' work at the showcase

Design Elements: PCNC 770 Benchtop CNC Mill

Iron and Frame Design

The PCNC 770 isn’t your ordinary benchtop CNC. Instead of extruded aluminum, it’s built with a stout cast- iron frame. Each PCNC 770 benchtop CNC mill employs over 650 lbs of cast iron and steel, precisely placed to provide maximum frame rigidity in a size that’s not much bigger than a traditional benchtop CNC. This makes the PCNC 770 a perfect choice as a benchtop milling machine.

Each PCNC 770 features hand-scraped cast iron hydrodynamic sliding dovetailed ways – still the best technology available for withstanding high loads and dampening machining vibrations. All PCNC 770 way surfaces are bonded with low-friction PTFE filled Acetyl co-polymer, then hand scraped by master machine builders. Similar to brand name compounds such as Turcite® or Rulon®, the PTFE filled Acetyl minimizes sliding chatter by virtually eliminating stick/slip friction while also providing superior wear resistance for a lifetime of use.

Each PCNC 770 milling machine employs hand-fitted tapered gibs. Tapered gibs provide superior accuracy and repeatability compared to the inferior plate and set screw design typically found on other CNC benchtop mills. Ways and gibs are serviced by a 15-point internal oil lubrication system.

Spindle System

The PCNC 770 features a robust 10000 RPM 1.0HP spindle powered by a simple, low–maintenance belt driven induction motor. Two belt ratios provide infinite speed control: 175 to 3,250 rpm in the low ratio, and 525 to 10,000 rpm in the high ratio, resulting in a spindle system that is both powerful and nimble at the same time – much more versatile than the underpowered spindles on typical benchtop CNC mill systems.

State-of-the-art sensorless vector technology from Emerson Control Techniques™ provides the PCNC 770 spindle motor with exceptional speed and torque characteristics unlike any other CNC benchtop mill.

Each spindle cartridge is dynamically balanced for smooth cutting performance at high speeds – necessary for engraving and light finishing with small diameter cutters

PCNC 770 mills feature an R8 spindle with a 3 3/8" nose diameter. This isn’t an arbitrary design, but the same standard as popularized by Bridgeport-style manual mills. This means the PCNC 770 can be used in combination with the innovative quick-change Tormach Tooling System® (TTS) or any readily available R8 tooling, expanding tooling choices beyond the limited or proprietary small collet systems of other benchtop CNCs.

Motion System

Direct-drive Motion is provided by precision ground P4 grade ball screws coupled to high performance polyphase stepper motors powered by microstepping driver technology from Leadshine® - the same system used on our industry leading PCNC 1100 mill for repeatable and accurate motion control. These drive systems not only provide superior torque at cutting speeds, but improved linearity, reduced vibration, and quieter operation when compared to other stepper systems popular today with benchtop CNC manufacturers.

Options and Accessories: PCNC 770 Benchtop CNC Mill

The PCNC 770 personal benchtop CNC mill design is modular, meaning each machine is expandable and upgradeable with the latest options and accessories from Tormach.

Tormach offers the PCNC 770 personal CNC milling machines on an a la carte basis, making it easy to build a truly custom CNC benchtop milling system. All options and accessories are sold separately, allowing you to choose exactly what you want. Options for PCNC 770 benchtop CNC systems include:

We also offer a complete line of CAD/CAM software and benchtop CNC milling accessories for the PCNC 770, including our Tormach Tooling System® (TTS) - the new standard in affordable toolholders for small CNC mills.

Support: PCNC 770 Benchtop CNC Mill

As with all Tormach products, PCNC 770 benchtop mills are backed with Tormach's second-to-none customer care and technical support to ensure your satisfaction. We support your investment with email and phone support from our dedicated support team of machinists and engineers and with our extensive online resources, so you can rest assured that when you choose Tormach, you’ve made the right choice from day one.

Learn More: PCNC 770 Benchtop CNC Mill

Learn more about the engineering behind the Tormach PCNC 770 personal benchtop CNC mills from our Personal CNC Design Analysis whitepaper, or review the manuals, specifications and technical documents below.

Find out more about Tormach, the latest news and upcoming events, or read the Tormach story to learn more about Tormach’s affordable line of PCNC Personal milling machines and start enabling your ideas with Tormach!

If you prefer something slightly larger than a benchtop CNC milling machine, consider our best-selling Tomach PCNC 1100 personal CNC mill.

Visit our e-store to select the personal CNC milling machine and accessories that are right for you!

PCNC 770 - Mill Documents

All PCNC 770 - Mill Documents

02/19/13 - TD10020: PCNC Mill Comparison Whitepaper (619 kb)
PCNC 770 vs. PCNC 1100 Comparison Whitepaper.

02/18/13 - TD10160: Supression Kit Installation Instructions (742 kb)
Installation instructions for Suppression Kit for PCNC mills

02/18/13 - SB0039: USB Related Motion Failures From Electrical Noise (129 kb)
Service Bulletin focusing specifically on issues related to USB related motion failures whose origin lie in electrical noise.

10/10/12 - DS10153: PCNC Product Warranty (163 kb)
Regular Warranty Policy for the PCNC mills.

10/10/12 - DS10002: Extended Warranty Datasheet for PCNC 1100 and PCNC 770 (172 kb)
Extended Warranty Datasheet for PCNC 1100 and PCNC 770 Mills

06/19/12 - TD10139: PCNC 770 Control Software Install Instructions (13 kb)
Control Software Installation Instructions for the PCNC 770.

05/22/12 - D40275: PCNC 770 Dimensions Drawing (214 kb)
Document showing the PCNC 770 height and width for space planning.

04/23/12 - PCNC 770 Series 3 Exploded View (67 kb)
Exploded Parts View for the Tormach PCNC 770 Series 3

04/23/12 - PCNC 770 Series 3 Manual (3 kb)
Manual for the Tormach PCNC 770 Series 3

01/25/12 - TD10104: PCNC 770 Certificate of Inspection (119 kb)
Certificate of Inspection used for the PCNC 770 mill.

12/12/11 - PCNC 770 Series 3 and Accessories Datasheet (1602 kb)
Datasheet for the Tormach PCNC 770 Series 3 and Accessories

11/29/10 - SB0024: Servicing Spindle Bearings on the PCNC (219 kb)
Service Bulletin on servicing spindle bearings on the PCNC.

11/23/10 - SB0031: Flushing the Lubrication System (229 kb)
Service Bulletin on flushing the lubrication system.

03/05/10 - D40281: PCNC 770 Base Drawing (20 kb)
PCNC 770 base drawing, detailed and dimensioned. Provided to assist people planning their machine stand.

01/12/10 - SB0012: PCNC Control Computer Recomendations (182 kb)
Service Bulletin recommending computers for PCNC control.

06/30/09 - SB0016: Oil & Coolant (145 kb)
Service Bulletin with suggestions on Oil & Coolant for the PCNC 1100 mill.

09/14/07 - Guard Kit & Extended Guard Datasheet (431 kb)
Datasheet on the Guard Kit and Extended Guard for the PCNC 1100 mill

07/19/07 - Machine Arm Datasheet (529 kb)
Datasheet on the optional Machine Arm for PCNC mills.

02/06/07 - PCNC 1100 Printer Port Input Output Pins (10 kb)
Detailed list of input and output pins on the printer port on the PCNC 1100 and PCNC 770 mills.

06/01/06 - PCNC Design Analysis Whitepaper (135 kb)
Detailed Engineering document of the technical design of the PCNC 1100 milling machine.

PCNC 770 - Mill Manuals