Air Threading Clutches, Hi-Lo Retrokit Drive Clutches and Controls for Screw Machines

Logan Clutch Corporation is an OEM manufacturer of hydraulic and air actuated clutches. They are used in Acme-Gridley, New Britain, Wickman, Davenport, Warner & Swasey, Euroturn, and Gildemeister Screw machines. In addition, Logan manufactures screw machine controls, (microprocessor controls) and real-time data collection software to use in conjunction its control system.

Logan Clutch proudly supplies OEM replacement products for:

Bullard, National Acme, Davenport, Conomatic, New Britain, SNM, Wickman, Giddings & Lewis, Lucas, Brown & Sharpe, Warner & Swasey, Euroturn, Mori-Say, ZPS, Tornos, Cincinnati Machine, Motch, Fellows.

Logan Clutch is the market leader in replacement clutches for all brands of screw machines. Additionally, many machine tool rebuilders rely upon Logan engineering expertise when remanufacturing high-value machine tools.

Please select the product below for specific details.

In our Literature Download section, you'll find complete product catalogs to download, view and print. Also available are installation and maintenance information.

Call to inquire about our Factory and Field Service for Logan Products.

For Your Acme-Gridley

Logan Hi-Capacity Air Threading®

Increase Productivity and Quality

Convenient to Maintain

Simple to Install

Most Logan Air Threading Clutches Utilize Existing Clutch Drive Cups, (Clutch Gears), Spacers and Shafts

HI Capacity Air Threading on 1-1/4RA-6 Acme Gridley Acme-Gridley before and after

For Your Acme-GridleyHi-Lo Retrokit

Logan Hi-Lo Retrokit®

Retrokit® Features:

  • Reduces Idle Time Between Speed Changes
  • Replaces Mechanical Clutches, Roll Clutch, Band Brake
  • and Linkages with Fast-Acting Air-Actuated Logan Clutches
  • Positive, Crisp Logan Clutch Engagement Guarantees
  • Cycle Time Repeatability
  • Simplifies Clutch Maintenance - No Disc Pack Adjustment
  • or Slippage
  • Quick-Stop, Power-Applied Brake - Prevents Machine Coasting 




Additional parts Justification worksheet for Acme Gridleyproduced per year - 160,000
With Hi-Lo Retrokit 

Total added revenue to company’s $ 24,000.00
top line, utilizing existing machine, operator and floor space 

Above calculation based on 10%
increase in productivity - Varies by machine condition




Logan Control Systems

The Logan CS2001XTTM  Microprocessor ControlLogan CS2001XT Microprocessor Control

The CS2001XT is specifically designed to bring new machine technology to your existing fleet of screw machines. With features such as Tool Counters, Thread Check, Machine LockUp Detection, Stock Load and more, the XT offers screw machine users more flexibility during set-ups, and increases overall machine productivity.

All the Features of the XT16 Plus:

Plus many more features - call for details


Logan Spindle Carrier Indexing Kits


Retrofit Your Acme-Gridley with a Logan Hi-Lo Retrokit and Indexer Right on Your Shop Floor

Reduce Idle Time Between Gear Changes:

  • Increase Capacity and Profitability
  • More Productivity from Existing Machines,
  • Floor Space and Operators
  • Better Machine Utilization
  • Lower Maintenance Costs

Smooth, Faster Acting Logan Spindle Carrier Indexing Kits
for your Acme-Gridley

  • Index up to 25% Faster - Save Time, Money and
  • Increase Productivity
  • Reduce Idle Time Between Speed Changes - More
  • Capacity and Profitability
  • Requires 75% Less Input Torque - Reduces Maintenance Costs

Reduce Idle Time on Your Acme-Gridley up to 25% 
We replace the older Geneva-style indexing mechanism, spiral bevel gears, and Indexing arm on your Acme with our smooth, faster acting Logan Indexer, Fast Bevel Gears and Heavy-duty Indexing Arm

Spiral Bevel Gears Indexer Kit hardware and accessories Indexer and Indexer Arm

For Your Davenport Model BDavenport Air Threading Clutch

Logan Air Threading®

Air Threading Clutches are Self Adjusting - No Slippage!
Since Logan Air Threading Clutches are self-adjusting, they eliminate the need for your operator to mechanically adjust the threading clutch, providing your machine operator or maintenance person additional time to troubleshoot more complicated manufacturing challenges.

Retrofits Easily with Early and Late Model Davenports
This new Air-Threading clutch package has been designed to enable users of early and late model Davenports to easily retrofit their existing machines that currently use mechanical threading with this new Logan Air-Threading Clutch arrangement.

Air-Threading is Available on New Davenport Machines Too!

Increase Productivity and QualityRetrofits with Early and Late Model Davenports

Convenient to Maintain


Uniform tap depth over millions of partseliminates mechanical linkage

For Your Davenport Model BLogan Hi Lo Retrokit

Hi-Lo Retrokit®


Hi-Lo Retrokit Features:


“Go To” Stock Load Positioning

Ideal for Bar Loaders Too!

Davenport timing chart









CS2001XT PanelDavenport HP (Servo B) vs. Loganized Model B



















Ask us About Logan Air Threading® Clutches and Hi-Lo Retrokits® with Controls for Your Wickmans and New Britain

Air Threading for your WickmanLogan Air Threading for your New Britain










Logan Spindle Drive Clutches For Your “00” No. 2 and No. 3 Brown & Sharpe 4-Speed Ultras

Brown and Sharpe Increase tool feed rates in multiple speeds








Air Pick-Off Drives for Acme, Wickman, ZPS and New Britain

Brings Spindle to Complete Stop  Prior to Part Ejection










Hi-Lo Retrokits
Air Threading Clutches
Spindle Carrier Indexing Kits
Brown and Sharpe Spindle Drive Clutches
Pick-Off Drives
Air Pick-Off Attachments
CS 2001 XT Microprocessor Controls

Where Used:



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