Wheeler Tool Company!


***Click Here for Machining Demo Movie of PBA-35CRFT***


Sample Machined Parts

Polygon Box-Contour Reverse Form/Turn (CRFT) Model For Automatic Screw Machine Centers (Turning behind shoulder applications)

Patented designed Unit contains a Cam developed for your specific application

Make your Automatic Screw Machine into a Machining Center.


Ext. Hex Range

Ext. Square Range

Typical Machining Center


1/8"-1" Ext. Hex
1" Max. Length

1/8"-3/4" Ext. Square
1" Max. Length

1" Acme or Larger, New Britain, Wickman, etc. Multiple Spindle Screw Machines


(2) Flats, Elliptical, Rectangular, Pentagon


Utilizes existing Automatic Machining Centers
Ideal for High Production Runs
Eliminates Costly Secondary Operations
Provides behind the shoulder Turning (from your Cross-Slide Position)
Mounts only on the Cross-Slide of your Machine
Polygon Attachment is driven by a Synchronous Drive Assembly (provided by customer)
Cam for each different application changed in 20 minutes


PBA-CRFT Unit Including the Positive Stop Arm & Cross Slide Turning Base to meet your specific Application
Adapter Plate for the Cross-Slide of your Machine
(6) CRFT Turning Tools to suit your application
Sample Parts machined from your material
Please fill out the Polygon Job Specification/Data Sheet when requesting additional information!



Wheeler Tool Company has been working for forty years on the unconventional tools used to eliminate costly secondary operations.

The Polygon Box-Contour Reverse Form/Turn (CRFT) Model was developed by Wheeler Tool Company to provide a cost effective method for contour machining behind the shoulder application for Automatic Machining Centers.

The PBA-35CRFT Model was designed to perform the nearly impossible task of machining Polygon Contours behind shoulders. This enables you to perform a very difficult task on the cut-off end of the stock with your existing Automatic Screw Machining Centers.

The PBA-35CRFT Model provides Single Point Turning of Contours behind the shoulder or on the cut-off end.

The Unit must be mounted on the cross-slide and be driven by a Synchronous Drive Assembly matched 1 to 1 with the machine spindle.

The Cross-Slide advances the tool to cut the Contour to the size desired then the tool stops moving inward and moves sideways to run the Contour to the length desired up to 1" maximum length.

Synchronous Drive is to be supplied by the customer. Wheeler Tool will provide assistance in the procurement if necessary.

***Click Here for Machining Demo Movie of PBA-35CRFT***

About Our Company Product Catalog Contacts Job Specification /Data Sheet Main Page

Wheeler Tool Company wtc@wheelertool.com 215 Wheelock Ave. Athens, PA 18810 USA Phone & Fax 570.888.2275