Not Enough Installation Space for a Pneumatic Clamp? Why the 112 mm Overall Length Matters

Problem | Why Can a Clamp Fit the Profile but Still Not Fit the Equipment?

When selecting a pneumatic clamp for aluminum profiles, users usually focus on resting opening and maximum opening.

These dimensions are important, but another parameter is often overlooked: overall length.

The confirmed KRT-110 dimensions are:

• Resting opening: 41.15 mm
• Maximum opening: 90 mm
• Overall length: 112 mm

If users check only the 41.15 mm and 90 mm opening dimensions, they may assume that the clamp is suitable as long as it can fit the aluminum profile.

However, the clamp body must also fit inside the actual fixture or equipment layout.

This creates an important distinction:

A clamp that can hold the profile may still be too large for the available installation space.

For compact equipment, narrow fixture spacing, or locations surrounded by other mechanical parts, the 112 mm overall length can become a key selection parameter.

Cause | Why Does Overall Length Matter?

1. The clamp body requires real installation space

A pneumatic clamp includes more than the jaw opening.

The main body, pivot structure, and jaw movement all occupy space.

The KRT-110 has an overall length of 112 mm, which provides a practical reference when checking fixture and equipment layouts.

Even if the 90 mm maximum opening matches the workpiece, the clamp may still be unsuitable if there is not enough room for the body.

2. Adjacent clamps may interfere with each other

In some aluminum profile production lines, several clamps are installed side by side.

In this case, engineers need to check:

• Clamp-to-clamp spacing
• Profile spacing
• Jaw movement space
• Nearby mechanical structures

Maximum opening alone cannot answer these installation questions.

3. A larger opening does not mean the equipment has enough space

The KRT-110 moves from a 41.15 mm resting opening to a 90 mm maximum opening.

The opening difference is:

90 − 41.15 = 48.85 mm

This means the clamp has a clear opening movement during operation.

Installation planning should therefore consider both the 112 mm static overall length and the additional space required for jaw movement.

Solution | How to Check KRT-110 Installation Compatibility

A more reliable selection method is to check jaw dimensions and overall clamp dimensions together.

Step 1: Measure the available equipment space

Check the real installation area where the clamp will be placed.

Do not measure only one direction. Consider the clamp body, jaw direction, and surrounding structures.

Step 2: Compare with the 112 mm overall length

Use 112 mm as the main body-size reference.

If the available space is very close to 112 mm, do not rely only on the theoretical dimension. Assembly and movement clearance should also be considered.

Step 3: Check jaw opening space

The KRT-110 can open up to 90 mm.

During operation, the jaws need movement space, so nearby guards, profiles, fixtures, or adjacent clamps should be checked for interference.

Step 4: Check the relationship between clamp and profile

Even if the clamp body fits, the profile may still interfere with nearby equipment after loading.

For this reason, engineers should evaluate:

clamp dimensions + profile dimensions + clamping direction

as one complete installation layout.

Application | When Is the 112 mm Overall Length Especially Important?

Compact equipment layouts

When internal space is limited, overall clamp length can be just as important as maximum opening.

Multiple clamps installed side by side

Spacing between clamps should be checked before installation.

Multi-size aluminum profile production

Different profile sizes can change the actual clamping position and space requirement.

Existing line upgrades

When replacing clamps on an existing production line, installation points are often already fixed, making the 112 mm overall length particularly important.

How to Choose

Step 1: Confirm the clamping requirement

Check whether the 41.15 mm resting opening and 90 mm maximum opening suit the actual profile.

Step 2: Measure the installation area

Determine the available fixture and equipment space.

Step 3: Compare with the 112 mm overall length

Make sure the complete clamp body fits.

Step 4: Check dynamic clearance

Allow enough room for jaw movement, not only static installation.

Step 5: Review the profile cross-section

For complex profiles, place the clamp and profile cross-section into the same layout drawing for a more accurate check.

FAQ

What is the overall length of the KRT-110?

The overall length is 112 mm.

Why does overall length matter when selecting a pneumatic clamp?

Because the clamp must fit inside the actual equipment or fixture space, not only around the workpiece.

Does the 90 mm maximum opening affect space requirements?

Yes. The jaws require movement clearance as they open, so surrounding components should be checked for interference.

Can the KRT-110 be used if the available space is close to 112 mm?

It should not be confirmed based on the theoretical dimension alone. Assembly clearance, jaw movement, and surrounding equipment should also be reviewed.

Conclusion

Pneumatic clamp selection should not focus only on jaw opening.

For the KRT-110, the 41.15 mm resting opening and 90 mm maximum opening help evaluate profile compatibility, while the 112 mm overall length helps evaluate installation compatibility.

Considering these dimensions together with the actual equipment layout provides a more reliable basis for selecting the KRT-110 for aluminum profile clamping applications.