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A2-5 Finishing Sub-Spindle

   
Available for ST-10 through ST-25 models
  • A2-5 Spindle Nose
  • 5.3" Chuck Size
  • 6000 rpm Speed

Service Documents

Our finishing sub-spindle for ST-10 through ST-25 turning centers – including Y-axis models – will not only make you more productive, and but will also provide new options for finishing the 2nd-op side of your parts.

This affordable A2-5 spindle is equipped with a 5.3-inch hydraulic chuck, and will fully synchronize with the main spindle to provide effortless “in-cycle” part handoff. This allows you to finish-off the “other half” of your part in a single setup – simply load up your raw workpiece, and the next time you open the door, you’ll have a finished part. A built-in part ejector propels the finished part into the optional parts catcher for automated operation.

Note: Not compatible with the VDI or BOT turret, or the tailstock option. The sub-spindle is compatible with the APL; however, the APL can only load/unload parts from the main spindle. Availability may vary by region.
 

  • 6000 rpm
  • A2-5 spindle nose
  • 5.3" (135 mm) hydraulic chuck 
  • 1.3" (33 mm) spindle bore (non through)
  • Powerful servomotor drive provides generous torque throughout the rpm range
  • Allows fully synchronized part pass-off (up to 4800 rpm)
  • Built-in part ejector
  • Includes CNC Control Cabinet Cooler

AVAILABLE ON THE FOLLOWING MACHINES

VIDEOS

Use G14 to Program Your Lathe Sub-Spindle —TOD

See just how easy it is to program your lathe sub-spindle. In this Tip of the Day, Mark walks you through how to use G14 and how to set up your tools when using a sub-spindle.

The Finishing Spindle In Action

Watch live tool milling, drilling, and tapping, featuring our Finishing Spindle and ST-10Y Turning Center.

CUSTOMER TESTIMONIALS

AMERICAN TORCH TIP

See how American Torch Tip is using automation to increase productivity to give a competitive edge.

Recently, American Torch Tip installed a turning cell with three Haas ST-20Y CNC lathes with sub-spindles, each set up with automation for lights out production. Two of the Haas ST-20Y CNC lathes are loaded by Haas Automatic Parts Loaders, while the third is loaded by a Haas Robot Package. Learn how this installation is helping a leading manufacturer of torches gain a competitive edge post-pandemic.

Recently, American Torch Tip installed a turning cell with three Haas ST-20Y CNC lathes with sub-spindles, each set up with automation for lights out production. Two of the Haas ST-20Y CNC lathes are loaded by Haas Automatic Parts Loaders, while the third is loaded by a Haas Robot Package. Learn how this installation is helping a leading manufacturer of torches gain a competitive edge post-pandemic.

“We finally bought one . . . [Robot Package] and that was nic,, because it was all plug-and-play.” – Jack Walters, President - American Torch Tip Co.

Why a Sub-Spindle ?

Sub-Spindle Benefits:

  • Allows for done-in-one part machining processes 
  • Fully synchronized, on-the-fly part pass-off (up to 4800 rpm)
  • Increases productivity
  • Improves part quality
  • Reduces scrap by minimizing part handling
  • Reduces secondary setups
  • Easy programming, with Z-axis mirroring capability
  • Works well with bar feeder and parts catcher machine configurations
  • Powerful servomotor drive provides generous torque for finishing operations

Sub-Spindle Cutting Demo

Sub-Spindle Live Tooling Demo

Sub-Spindle Specifications

  INCH METRIC
Sub-Spindle Nose Size and Maximum Speed A2-5 / 6000 rpm A2-5 / 6000 rpm
Sub-Spindle Maximum Synchronization Speed with Main Spindle
 4800 rpm 4800 rpm
Sub-Spindle Chuck Size 5.3" Hydraulic Chuck 135 mm Hydraulic Chuck
Sub-Spindle Chuck Throat 1.30" Diameter x 1.50" Deep 33 mm Diameter x 38 mm Deep
Sub-Spindle Bore (without chuck and drawbar Installed) 1.38" Diameter 35 mm Diameter
Integrated Brake Torque 17 ft-lb 23 Nm
Rapid Speed (B-axis) 400 ipm 10 m/min

Spindle Orientation Accuracy

(Requires Spindle Orientation Option)

 ± 0.02 degrees ± 0.02 degrees

Note: Drawbar dimensions for third-party workholding are available on the layout drawing for each lathe model. 

Sub-Spindle Programming

Sub-Spindle programming is made simple by the Haas control. Forget about having to program the Z-axis in the positive direction. Simply program the Sub-Spindle operations the same way you would for the Main Spindle, insert G14 (Secondary Spindle Swap) at the Sub-Spindle Tool Call in the program, and the control does everything for you – from turning on the spindle in the correct direction, to opening and closing the chuck, to turning on the coolant, and more. 

The Main and Sub-Spindle can fully synchronize, so you can pass-off a part with the chucks turning. The Sub-Spindle also is capable of phasing (orientation), so you can grip parts with odd shapes. 

A dedicated active G-code display on the control lets you know the status of both spindles at all times. 

 

Sub-Spindle Turrets and Tooling Kits (ST-10, 10Y, 15, 15Y)

The A2-5 Finishing Sub-Spindle Option requires the Hybrid (VB10) turret option. The Hybrid (VB10) turret is standard on all Y-axis lathes. 

When the Finishing Sub-Spindle option is ordered, the Included Tool Kit is replaced by a new one ,as described below. The Tool Kit is compatible with the Inch or Metric Hybrid Turret.

Inch version of the Bolt-On Tool Kit contains the following:

  • 1 each 0.75" Face Groove Holder
  • 1 each 1.0" ID Holder
  • 1 each 1.25" ID Holder
  • 1 each 3/4" Extended Parting Holder
  • 1 each 3/4" OD Extended Twin Holder
  • 1 each 3/4" ID Extended Twin Holder
  • 1 each 3/4" ID Extended Twin Reversed Holder
  • 4 each coolant blocks, 4 each wedge/clamps and assorted coolant fittings

Metric version of the Bolt-On Tool Kit contains the following:

  • 1 each 20 mm Face Groove Holder
  • 2 each 32 mm ID Holder
  • 1 each 20 mm Extended Parting Holder
  • 1 each 20 mm OD Extended Twin Holder
  • 1 each 20 mm ID Extended Twin Holder
  • 1 each 20 mm Extended Twin Reversed Holder
  • 4 each coolant blocks, 4 each wedge/clamps and assorted coolant fittings

Sub-Spindle Turrets and Tooling Kits (ST-20, 20Y, 25, 25Y)

The A2-5 Finishing Sub-Spindle Option requires the BMT65 turret option, with or without live tooling. The BMT65 turret is standard on all Y-axis lathes. 

When the Finishing Sub-Spindle option is ordered, the Included Tool Kit is replaced by a new one, as described below. The Tool Kit is compatible with the BMT65 Turret.

Inch version of the BMT65 Tool Kit contains the following:

  • 3 each BMT65 1" Twin OD Toolholders
  • 2 each BMT65 1.25" Twin ID Boring Holders
  • 1 each BMT65 1.5" ID  Split Boring Bar Holder

Metric version of the BMT65 Tool Kit contains the following:

  • 3 each BMT65 25 mm Twin OD Toolholders
  • 2 each BMT65 32 mm Twin ID Boring Holders
  • 1 each BMT65 40 mm ID  Split Boring Bar Holder

Sub-Spindle Included Parts Ejector

A very high-volume production setup common with sub-spindle lathes involves a bar feeder and a parts catcher. This trio of options allows for extended periods of unattended parts machining. 

This is why we include a Parts Ejector with every Sub-Spindle Option. The Parts Ejector bolts directly to the chuck, and provides a very simple way to eject a finished part into the parts catcher chute, for continual machine operation without opening the door. 

Note:
The following charts are for reference only.
These power numbers are based on 240V service, supplied at the required amperage.
Actual results may vary depending on the supplied power and the operating conditions.
Haas spindles will provide these peak power numbers, which equate to 200% spindle load, for three minutes, 
150% spindle load (75% of the peak number) for 15 minutes, 100% spindle load (50% of the peak number) continuously.

Need More Information?

If you would like more information about how a new Haas machine can bring your products to life, please share your contact information.

Available on These Machines

Haas ST-10

ST-10

CNC Lathe with 12" x 16" max capacity and 1.75" bar capacity

  • 6.5" Chuck Size
  • 1.75" Bar Capacity
  • 6k RPM
  • 15 hp Power
   
Product Image

ST-15

CNC Lathe with 12" x 16" max capacity and 2.5" bar capacity

  • 8.3" Chuck Size
  • 2.5" Bar Capacity
  • 4k RPM
  • 20 hp Power
   
Haas ST-20

ST-20

CNC Lathe with 13" x 22.5" max capacity and 2.5" bar capacity

  • 8.3" Chuck Size
  • 2.5" Bar Capacity
  • 4k RPM
  • 20 hp Power
   
Haas ST-10Y

ST-10Y

Y-Axis CNC Lathe with 12" x 16" max capacity and 1.75" bar capacity

  • 6.5" Chuck Size
  • 1.75" Bar Capacity
  • 6k RPM
  • 15 hp Power
   
Haas ST-20Y

ST-20Y

Y-Axis CNC Lathe with 11.75" x 22.5" max capacity and 2.5" bar capacity

  • 8.3" Chuck Size
  • 2.5" Bar Capacity
  • 4k RPM
  • 20 hp Power
   
Haas ST-25Y

ST-25Y

Y-Axis CNC Lathe with 11.75" x 22.5" max capacity and 3.0" bar capacity

  • 10" Chuck Size
  • 3.0" Bar Capacity
  • 3.4k RPM
  • 30 hp Power
   

All prices and specifications subject to change without notice. Freight, rigging, state & local taxes, vendor installation charges, and dealer installed accessories are not included. Not responsible for misprints or typographical errors. Machines shown with optional equipment. Actual product appearance may differ.

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