BTM Sealed Offset (SO) Power Clamps

These clamps feature a sealed mechanism which is protected against weld spatter, dirt, chips, and coolants.

Clamping in a Welding Environment

With two bore sizes, eight arm positions available on each side of the clamp, and a sealed clamping mechanism, the rugged Sealed Offset clamps are a versatile choice for clamping in a welding environment.


The 4 sided symmetrical mounting pattern makes it quick and easy to accurately reposition the clamp when accommodating multiple part fixturing situations.

An example of a Sealed Offset clamp.

Example of a Sealed Offset Clamp.

An example of a Sealed Offset clamp with dual arms and optional Prox. Switches

Sealed Offset Clamp with dual arms and optional prox. switches.

Basic Product Specifications

  • Power Source: Pneumatic
  • 1500 Series Bore Ø: 38.1mm [1.5in.]
  • 2500 Series Bore Ø: 63.5mm [2.5in.]

Product Features & Benefits

  • Locking Toggle Action.
  • Sealed Mechanism ~ Lubricated For Life Of Clamp.
  • Large Bearing Area.
  • Integral Cylinder With Heavy Wall.
  • Pin Arm Drive ~ Quick Change & Versatile Positioning.
  • Hardcoated Aluminum Body.
  • Optional Pre-Fitted & Tested Proximity Switches.

General Product Information

The following sections contain general information about the product.


If you need to clamp in a weld environment, the sealed clamping mechanism of this clamp will keep weld-contamination out.


BTM's Sealed Offset Series of power clamps are designed to provide high clamping forces and long work life within a compact, lightweight unit.

There are four mounting locations on each side of the clamp body for your convenience, and the one piece body eliminates premature wear due to misalignment.

BTM's Sealed Offset (SO) Clamps feature a sealed mechanism which is protected against weld spatter, dirt, chips, and coolants. BTM SO clamps are manufactured from a one-piece body for true alignment; and for increased versatility, BTM's SO clamps allow the arm to be mounted in 8 positions on each side of the clamp. Adjustable Arm Position (AAP) or Over Center Locking (OCL) options are also available.

Sealed Offset Clamp Arm Changeover. BTM's Pin drive arms allow fast changeover without disassembly of the sealed internal mechanism.
Sealed Offset Clamp Arm Locations. Clamp arms can be mounted left, right or dual without modification.
45° Interchangeable Arm Positions. 45° Interchangeable Arm Positions.

Adjustable Arm Position (AAP) or Over Center Locking (OCL) options are available.

Sealed Offset Clamp Adjustable Arm Position (AAP) Adjustable Arm Positioning
Sealed Offset Clamp Over Center Lock (OCL) Clamp arm advances past closed position and returns approximately ½°. Clamp remains locked with air off.

Shown here are a few custom product applications which used BTM Sealed Offset (SO) Clamps.

Sealed Offset Clamps shown in a custom application. Examples of Sealed Offset Clamps in a custom application.
Sealed Offset Clamps shown in a custom application. Examples of Sealed Offset Clamps in a custom application.

Product 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.

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 Seaked Offset 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.

Sealed Offset 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.

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