ATC Specifications

What’s Included

In each ATC Spindle Kit, you will receive:

• 2.2KW ATC Spindle
• ATC Spindle Mount
• Enclosed 2.2KW VFD and Mount Adapter
• Clear Cut Dust Shoe
• Tool Length Sensor
• ATC Expansion Board for an SLB-EXT Controller
• 2.2KW VFD NEMA 6-15P Power Cord
• 10M Length 8mm Air Line Tubing
• Male 1/4″ NPT to 8mm Air Line Push Fitting
• ER20 Collet Wrench
• All cables and harnesses

For the specific ATC Spindle Kits:

ATC 6-Tool Rack Kit

• 1 Tool Rack (holds 6 tools total)
• 6 ISO20 Tool Holders
• 12 ER20 Collets, for  1/8″, 1/4″, 3/8″, 1/2″ bits

ATC 12-Tool Rack Kit

• 2 Tool Rack (holds 12 tools total)
• 12 ISO20 Tool Holders
• 24 ER20 Collets, for  1/8″, 1/4″, 3/8″, 1/2″ bits

ATC Spindle Only

• 3 ISO20 Tool Holders (No tool rack)
• 12 ER20 Collets, for  1/8″, 1/4″, 3/8″, 1/2″ bits

Not included in the ATC Spindle Kit:

• AltMill CNC Machine
• Computer or laptop
• End mills or bits
• Air regulator and filter
• Air compressor
• LED light strips

Compatibility

Machines: All sizes and models of the AltMill are compatible with our ATC. Our ATC is not compatible with with third-party CNC machines.

Reduction in Machine Travel (Y-axis): 5.3″ from the back of the machine, accounting for clearance for the Clear Cut Dust Shoe

Remaining Machine Travel (Y-axis):

• 2×4: 20.3”
• 4×4 43.5″
• 4×8: 99”

Note that the tool rack is detachable, so it can be removed to free up the full cutting area.

Minimum Requirements

Electrical

ATC Power: Air manifold, pressure and temperature sensors utilize the SLB-EXT’s existing power supply

Total System Power:

3 separate electrical circuits, to provide…

• 110 VAC 15A single phase for the AltMill (SLB-EXT with ATC hookup), dust collection, and computer
• 220 VAC 15A single phase for the 2.2KW spindle
• 110 OR 220 VAC 15A single phase for your air compressor

Customer Supplied Air Compressor

• Operating Pressure: 100 psi
• Airflow: 3 CFM (ft³/min) at 90 psi or better
• Filter: 40 µm or better, coalescing type
• Dryer: More information to be provided

Product Details

Spindle

• Output Power: 2.2kW
• Speed: 7,500-24,000RPM, constant torque beginning at 18,000RPM
• Collet: ER20
• Bearings: Ceramic
• VFD power plug style: NEMA 6-15p

ATC

• Cooling: Air cooled with 24V fan
• Operating Noise: 60 dBA at 24,000RPM
• Tool Holder: ISO20
• Collet Type: ER20 collets
• Tool Rack Size: Maximum tool diameter 2″, maximum shank diameter 1/2″
• Number of Slots: 6 or 12 (configuration dependent)