An animation showing the Tog-L-Loc process

BTM Crocodile Hand Held Clinching Units

High force output and fast cycle time make this unit ideal in a range of prototype or short run production applications.

Clinching HVAC Ductwork

BTM's Air/Oil Booster powered Crocodile Unit was designed especially for clinching HVAC ducting. The unit opens and closes easily to reach over the ductwork flange and is quick cycling. The integrated rotary suspension makes it easy to move around corners through a full 360° without twisting the hydraulic and pneumatic control hoses adding to productivity. The rotary suspension is equipped with detents every 90° for easy alignment with horizontal and vertical joining surfaces. The Crocodile unit will also clinch upstanding flanges where there is also a return flange. The Crocodile unit joins thicker material with larger joints than the UniCroc and is well suited for low to medium size production runs.


Example of a BTM Crocodile Unit

Example of a BTM Crocodile Unit

Basic Product Specifications

  • Power Source: 49cc Air/Oil Booster
  • Max. Unit Operating Pressure: 345 BAR [5000 PSI]
  • Max. Combined Material Thickness: 3.5mm [.14in]
  • Clinch Tooling Compatibility: Round or Geo-Clinch® Joints
  • Tooling Sizes: 3.8

A short video demonstrating a BTM Crocodile Hand Held Clinching Unit.


General Information

The following sections contain general information about the product.


Click on a product to view a catalog page with more detailed information about that product:


Product Description
Crocodile Unit

Crocodile

A pincher type action permits better access to certain part cross sections with better ergonomics.

The upper jaw is easily opened for quick and easy access to the part.

Click on a product to view a catalog page with more detailed information about that product:


Product Booster Ratio Weight Max. Output
High Capacity Air/Oil Booster

Air/Oil 49cc Booster

64:1 17.8 kg [39.26 lb] 353 BAR [5120 PSI] @ 5.5 BAR [80 PSI]

BTM Specializes in Specials! If your joining requirements dictate the need for a custom anvil or unit, contact BTM to find out how we can be of assistance.


A short video demonstrating a BTM Automatic Crocodile Hand Held Clinching Unit.


Application Information

The following sections are provided to help match a Hand Held Unit to your part. More detailed information is typically available in our Product Literature section.
If you are considering this product for your project, please view the contact information below.


Shown here are some typical sheet metal connections that a Crocodile unit may be compatible with.
Not sure if your part is compatible with a Crocodile unit? Contact a BTM Application Engineer for assistance.


  • Overlap1.) Overlap
  • Angle and Sheet2.) Angle and Sheet
  • Angle and Sheet Sandwich3.) Angle and Sheet Sandwich
  • "T" and Sheet4.) "T" and Sheet
  • Outside Edge Flange6.) Outside Edge Flange
  • Hat on Sheet8.) Hat on Sheet
  • Two Piece Full Corner Overlap17.) Two Piece Full Corner Overlap
  • Full Corner Joggle Overlap18.) Full Corner Joggle Overlap
  • 45° Corner Overlap19.) 45° Corner Overlap

Download the Product Catalog to find technical information about the product.

Would you like to know if a Crocodile Unit is a good fit for your application, or would you like a quote?
Talk to an Application Engineer at 810-364-4567, or email us at sales@btmcorp.com. Business hours are 8am-4:30pm ET Mon-Fri.
You may also contact us by filling out the form below.


To help us with the quoting process, please email a drawing or CAD model of your part.
(If your drawing is near 10mb or larger, our FTP site is available. Contact BTM to obtain login information.)


Air-Over-Oil Crocodile Hand Held Units Contact Form
i The Punch Side has the "cavity" side of the joint. Punch Side and Button Side Example Note: Thicker material usually goes on the punch side.
i The Die Side has the "button" side of the joint. Punch Side and Button Side Example Note: Thicker material usually goes on the punch side.

* - Denotes a Required Field.

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Customer Information

The following section contains information for customers who have already purchased this product.

If you have already purchased this product, please fill out a brief customer satisfaction survey and let us know what you think.