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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

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 
  • Built-in part ejector
  • Includes CNC Control Cabinet Cooler

The Finishing Spindle In Action

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

Why a Sub-Spindle ?

Sub-Spindle Benefits:

  • Allows for done-in-one part machining processes 
  • Fully synchronized, on-the-fly part pass-off
  • 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 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. 

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Available on These Machines

Haas ST-10

ST-10

CNC Lathe with 14" 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 14" 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 15" 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.