cnc-machine-shop

The Newbould Grindit

Motorized Spin-Grinding Fixture for Installing  Radii and Angles

Machine Shop

The Newbould Grindit

With the Imperial Newbould Grindit Spin Fixture you are able to: spin grind, install radii and angles, use on a milling machine, submerge in EDM fluid, and inspect angles or roundness. The Newbould Grindit is available in A-2 Steel or 440C Stainless Steel.

Top Side Shotpin:  Allows for lock-in indexing every 15 degrees, repeatable within 10 arc seconds.  

Adjustable Stops:  Two adjustable stops are standard, adding additional stops more than 30 repeatable angles can be used with one setup. 

Zero Null Benefit:  Loosening 4 socket head cap screws on rear of the unit allows a +/- 8 degree adjustment from zero setting.

Spindle:  Is guaranteed to 50 millionths TIR for one year from date of purchase; the face plate is guaranteed +/- .0003" square over 3-3/4"

The V-Block:  The V-Block is precisely ground to fit the particular fixture.  A .0004" variance allows sideways maneuvering between the keys.  A 1/4-20" hole at the bottom of the V allows for working without a clamp.

5C Insert:  Standard 5C Insert is ground to fit the particular fixture; the serial number of the Grindit is ground into the insert.

Submersion:  Can be safely submerged in to EDM fluid by attaching an air regulator into the grease port and supplying 2 pounds of air pressure.

Motor:  1/15 hp variable speed, reversible 1800-rpm motor produces a zero to 400-500 rpm spindle speed of the fixture.

 




Specifications:

Spindle Roundness 50 millionth TIR

Deflection +/- .0003" 3-3/4" Out

Topside Shotpin 10 arc-second repeatability

Center Height 3.004" +/- .002" from bottom

Thru Hole 1-1/4" plus

Weight 14 lbs

Base Size 3-1/2" x 4"

Height 5"

Bottom Holes 2-1/2" centers

Material Available in A-2 or 440C Stainless Steel

V-Block Capacity 1-1/2"

Distance Between V-Block Keys 2.600 + .0002"

V-Block Width 2.600 - .0002"


Available Accessories:

Precision Three Jaw Chuck

4" Magnetic Chuck

Quick Mount Adapter for Magnetic Chuck

Submerge Drive

System,

Cog Belt Drive

Pressurization Kit


Pricing Effective Jan 1, 2021

Grindit Package with

V-Block

With 5-C Insert, Collet Nut & 2 Stops. Clamp, Screws & Rails for V-Block. Part Stops for Use with V-Block and Collet.

  $5,400.00

$8,142.00

Motor Package

With Mount, Screws & 3 Drive Belts.

$940.00

$940.00

Total Price for Grindit Package with Motor

Complete Package Includes Custom Wooden Box.

$6,340.00 

A2 Steel


$9,082.00

Stainless Steel




Providing World Renowned

Precision Fixtures Since 1992


Manufacturer of Toolmaker Fixtures for
​Spin Grinding and Installing Angles

Learn more

Who We Are

Imperial Newbould Inc., is a precision manufacturer of spin fixtures AND a complete one-stop Job Shop specializing in CLOSE TOLERANCE grinding, precision CNC Milling & Turning and Wire EDM.

A Century of Excellence

We are the manufacturer of the world renowned Imperial Newbould Indexer, Grindit and Flatspin and have over 100 years of combined tool making experience. The original company was founded in 1966 by Kenneth T. Gunn and is now second generation owned and operated by K.C. Gunn. 
CNC machine shop

Our Newbould Products

We Serve Nationwide!

We send our products all across the nation! Call us now or fill out a form to get a free quote.

Get a Free Quote!
Share by: