Retrofit Air Turbine Spindles?0 pages

Setup Guide - Retrofit Air Turbine Spindles™
How do I Retrofit Air Turbine Spindles™?
Program for the machine to advance
without rotating main spindle (S=0). Read
user notes, your CNC manual, and follow
all safety precautions. Do not allow your
main spindle to rotate with your Air Turbine
Spindle™ in place.
Mount your Air Turbine Spindles™ in the
main spindle or holder. Do not connect air
supply until your setup is complete.
If you have a TMA Autochanger, mount the
spindle in the carousel or umbrella.

Set up a line supplying dry clean 90PSI /
6.2Bar at the rated CFM / L/S feed rate
specified for your spindle in the catalog.
For 601, 602 and 625 the internal diameter
of all hoses, connectors, and fittings must
be greater than 1/4” / 6mm to prevent
airflow restriction.
For 625X and 650 units all hoses, connectors
and fittings must be greater than 3/8”/
9mm internal diameter. Restricted airflow
causes underpowered performance and
damages the spindle.
Air Turbine Spindles™ standard equipment
includes a 3 micron filter extractor,
as pictured below. A reservoir tank is
recommended for constant air pressure
/ flow to maintain constant high speed
(see left below)

If air is contaminated by water, mist, etc at
compressor output, place an additional
filter at that outlet, as shown below.
Filter
Extractor
(included)

Reservoir
Tank

Secondary
Filter

To switch between main spindle air supply
and the clean air supply, a solenoid may
be used, as pictured below. Contaminated
air will damage your spindle so ensure the
airflow is clean and dry.

Ensure you have a balanced concentric
speed rated end mill securely tightened
in the ER collet using keys supplied.
Always use eye protection and close the
CNC doors before introducing air to your
spindle. Ensure your main spindle is locked
so it cannot rotate.
Milling techniques at high speed require
reference to your endmill manufacturer’s
speeds and feeds recommendations. Take
a light cut and gradually step down.
If you hear harmonics or see vibration
marks, check you have an appropriate
endmill and change the speed of advance
or depth of cut.

Solenoid

NPT Option - Plug the hose into the
connector of clean air supply to your
spindle. Avoid restritcitons on the airlline.

Direct coolant at the cutting tip only. Do not
spray your spindle with coolant, which can
enter exhaust points. It is possible to use
jets to remove dust/chips with a vacuum
extractor pick-up.

NPT

TMA Autochanger Spindle Option Attach the mounting block to the side
of the main spindle using the pre-drilled
screw holes in the Haas, Hurco, Mazak
and Fadal mounting blocks. If you have a
Universal Mounting Block drill holes in the
mounting block to the configuration of
your machine’s spindle screw holes.

TMA
Manifold

TMA
Block

Adjust the height of the air plug using the
screw mechanism to fit your machines
dimensions (see below).
TMA
Adjustable
Height
Connector

Center Air Feed Option for 601, 602, and
625 spindles is available if your CNC has a
coolant channel greater than 1/4” / 6mm
permitting airflow to pass unrestricted by
small connectors. Drill pull plug to create
a channel if using a toolholder. Do not
alternate between coolant and air when
using center airfeed option.

Tel:+1.561.994.0500 • Fax: +1. 561.994.8097• www.airturbinetools.com • info@airturbinetools.com
Supply is subject to Air Turbine Technology Inc, (ATT) distributor policies and upon terms and conditions contained in the ATT distributor agreement. Subject to availability, change of specifications, price and terms without notice.
Always use a 0.3 micron filter/extractor and check specified air flow. Do not restrict airflow to your Air Turbine product by using couplings, hoses, pipes or fittings smaller than Minimum Internal Diameter: minimum must be 1/4”
(6mm) Internal Diameter for small units (200, 201, 0145, 2545, 2590, 601, 602, 722, 728, 730, 732). For larger diameter Air Turbine units (525, 210, 230, 3090, 430, 625, 650, 740) couplings, hoses, pipes or fittings on air supply the minimum
size must be Internal Diameter greater than 3/8” (9.5 mm). Ensure all hoses are clean. 6.2 Bar / 90 psi clean, dry, oil-free air only. Use eye protection and follow safety instructions. All prices in USD. All specifications approximate.
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