BTM TPCA Series Sealed Precision Power Clamps

Pneumatically operated weld-contamination sealed locking precision power clamps with adjustable arm openings.

Save Money - One Clamp Does it All!

BTM TPCA clamps can have left, right, or dual arms- which can be changed in the field! The degree of arm opening may also be adjusted by using an Allen wrench. Each TPCA model is sealed against weld-contamination, and features patented TriLok technology- a three point locking mechanism designed to stay locked, even if air pressure is lost.

TPCA-52, 62, and 82 Models are NAAMS Compliant.


BTM TPCA Series Power Clamps.

Basic Product Specifications

  • Power Source: Pneumatic
  • TPCA-42 Bore Ø: 42mm [1.65in.]
  • TPCA-52 Bore Ø: 52mm [2.00in.]
  • TPCA-62 Bore Ø: 62mm [2.50in.]
  • TPCA-82 Bore Ø: 82mm [3.25in.]

BTM also makes a 31.8mm [1.25in.] Bore Ø, weld-sealed clamp (without adjustable arm opening):

BTM's TPC-32 Series Power Clamps

A video introduction to TPCA Series Power Clamps.


Standard TPCA Series Clamp Models

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


General Information

The following sections contain general information about the product.


The BTM TPCA Series of clamps are high-quality, yet low-cost solutions for your clamping needs. These clamps are designed to perform in welding environments, and with patented TriLok technology, they are designed to stay clamped even if air pressure is lost. Access to manually unlock the clamp linkage is provided.


Simply put- BTM TPCA clamps were designed to save you money. Interchangeable arms mean one clamp can have left, right, or dual arms- and best of all these can be changed in the field. 0-120° adjustable arm opening means you can reconfigure the arm opening of a single clamp without having to buy a new clamp- all you need is an Allen wrench.


Need more reasons? TPCA-52, 62, and 82 clamps are NAAMS compliant with four mounting locations, each TPCA clamp features top and bottom porting, and one-piece hardcoat aluminum construction. Check out the features list and/or product advantages for more reasons.

  • One clamp model for single and dual arm clamps - No need to change internal parts.
  • Pin Arm Drive for versatile arm positioning & simplified arm change.
  • 0-120° arm opening adjustability
  • Integrated proximity switch. No need to be adjusted for opening change.
  • Top and bottom porting
  • TPCA-52, 62, and 82 complies to Global Standard Components NAAMS Spec.
  • One piece body with integrated cylinder.
  • Body is constructed of Aircraft Aluminum, hard coated to a Rockwell C-70 for excellent wear characteristics.
  • Sealed mechanism - lubricated for life of clamp
  • Self-Pumping Slide Rod Lubrication.
  • Cushions standard on both advance and retract motions
  • Access to manually unlock clamp linkage.
  • Patented TriLok Mechanism

BTM's TPCA clamps offer the following notable advantages over some other clamping products:


Swap Clamp Arms in the Field

With BTM's pin arm drive, one TPCA Clamp can have single or dual arms! Reduce your spare inventory by keeping less clamps on the shelf!

TPCA Single Clamp Arm Configuration TPCA Clamp Arms can be mounted left or right on a single clamp.
TPCA Dual Clamp Arm Configuration TPCA Clamp Arms can also be mounted in a dual configuration on a single clamp.

Adjustable Arm Openings

Clamp arm opening can be adjusted 0-120° with an Allen wrench.

Adjusting the arm opening on a TPCA clamp requires an Allen wrench. Adjusting the degree of clamp arm opening with an Allen wrench.

TriLok Equipped

BTM's patented Tri-Lok mechanism is a three point lock which remains engaged even if air pressure is lost. In addition to locking, the mechanism also provides accurate arm position and repeatability. Clamps equipped with Tri-Lok are ideal for use in clamping, or as a backup.

The exclusive Tri-Lok mechanism removes all working tolerances from all moving parts to provide a very repeatable (± 15') and rigid closed arm position. This unique arrangement is highly resistant to torque coming from force applied to the clamp arm.

  • Three Point Lock: Remains Locked if Air Pressure is Lost
  • Arm Repeats Position Accurately
  • When used as a Toggle Clamp, the arm is shimmed & locking occurs in the linkage
TriLok Mechanism used as a Backup TriLok used a Backup.
TriLok Mechanism used as a Clamp TriLok used a Clamp.

BTM's patented TriLok Mechanism can be used as a clamp or as a precision backup and eliminates "over-center" Clamps.


Application Information

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.


Download the Product Catalog to find technical information about the product. Download the User's Guide if you have already purchased the product.

BTM offers free downloads of our 3D CAD Files. You will need to sign up for an account to access the files, if you do not already have one.


Would you like to know if a TPCA Power Clamp is a good fit for your application?
Talk to an Application Engineer at 810-364-4567 or by email at sales@btmcorp.com. Business hours are 8am-4:30pm ET Mon-Fri.

TPCA Power Clamps Contact Form

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BTM offers a range of clamp and gripper products besides this one. Products range from compact light-duty models to rugged heavy-duty weld-contamination sealed clamps and grippers. Click an icon below to browse BTM's product selection.


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.