How to Evaluate KRT-110 Pneumatic Clamp Compatibility Using a 41.15 mm Resting Opening and 90 mm Maximum Opening

Problem | Why Does “It Can Open” Not Mean “It Is the Right Clamp”?

When selecting a pneumatic clamp for aluminum profiles, the main problem is often not whether the clamp can open wide enough.

The real issue is whether the opening size matches the actual clamping position of the aluminum profile.

A profile may have different dimensions at different sections. Local ribs, edges, protrusions, or irregular cross-sections can change the actual space required by the clamp.

Therefore, the selection process should not focus only on one question:

“How wide can the clamp open?”

Three dimensions should be checked:

• Actual width at the clamping point
• Required initial opening during loading
• Available installation space

For the KRT-110, the 41.15 mm resting opening and 90 mm maximum opening provide the main dimensional references for this evaluation.

Cause | Why Should Resting Opening and Maximum Opening Be Evaluated Together?

A pneumatic clamp does not have only one meaningful opening dimension.

The KRT-110 has:

Resting Opening: 41.15 mm

Maximum Opening: 90 mm

The difference between these two positions is:

90 − 41.15 = 48.85 mm

This means that engineers should distinguish between initial loading clearance and maximum opening capability.

Resting opening affects initial positioning

The 41.15 mm resting opening represents the initial jaw opening when the clamp is in its resting condition.

This dimension helps determine whether the profile and clamping position can be properly introduced into the clamp.

Maximum opening defines the upper dimensional limit

The 90 mm maximum opening indicates the maximum available opening of the KRT-110.

However, this does not mean that every aluminum profile below 90 mm is automatically suitable.

The critical dimension is the actual cross-section at the clamping point, not simply the nominal width listed in the profile specification.

Solution | How Can the 41.15–90 mm Dimensions Be Used for Clamp Selection?

The most practical method is to compare the KRT-110 dimensions directly with the actual profile section.

Measure the area where the jaws will make contact.

The evaluation should include:

• Local profile width
• Protruding sections
• Edge geometry
• Clamping direction
• Required loading clearance

The main KRT-110 dimensions are:

If the actual clamping dimension is close to 90 mm, selection should not be based only on the statement that the workpiece is “smaller than the maximum opening.”

Jaw position, contact geometry and available installation space should also be reviewed.

Application | Where Is This Selection Logic Useful?

The KRT-110 is suitable for applications where pneumatic clamp selection depends on variations in aluminum profile dimensions.

In aluminum profile processing and surface-treatment related operations, different profile sections may require different clamping positions.

The defined 41.15 mm resting opening and 90 mm maximum opening give engineers measurable data for checking profile compatibility.

Its 112 mm overall length can also be used to evaluate installation space around the clamping system.

The key engineering question is therefore not:

“Is this a high-performance clamp?”

A more useful question is:

“Do its dimensions match my profile, clamping point and installation space?”

How to Choose the KRT-110 Pneumatic Clamp

1. Measure the actual clamping position

Do not rely only on the nominal profile size.

Measure the section where the clamp jaws will actually contact the aluminum profile.

2. Compare it with the 41.15 mm resting opening

Check whether the resting position provides suitable initial clearance and positioning conditions.

3. Check the 90 mm maximum opening

The required opening must remain within the available maximum opening.

If the profile dimension approaches 90 mm, additional verification of the clamping arrangement is recommended.

4. Verify the 112 mm overall length

The clamp itself requires installation space.

The 112 mm overall length should therefore be checked against the available equipment or fixture layout.

5. Use a profile drawing for irregular sections

For non-standard aluminum profiles, width alone is usually not enough for accurate selection.

A better selection method is to provide:

profile cross-section drawing + clamping position + clamping direction + key dimensions.

FAQ

What is the maximum opening of the KRT-110 pneumatic clamp?

The maximum opening is 90 mm.

This is the upper opening dimension of the clamp, but final compatibility still depends on the actual clamping position and profile geometry.

What does the 41.15 mm resting opening mean?

It is the initial opening of the KRT-110 when the clamp is in its resting condition.

This dimension is useful when evaluating loading clearance and initial profile positioning.

What is the available opening travel?

The dimensional difference between the resting opening and maximum opening is:

90 mm − 41.15 mm = 48.85 mm

This value can be used as a selection reference for different profile dimensions.

Can every aluminum profile below 90 mm use the KRT-110?

Not necessarily.

The actual clamping-point dimension, profile geometry, jaw contact position and installation space should all be checked before selection.

Why is the 112 mm overall length important?

Because clamp selection is not only about jaw opening.

The 112 mm overall length helps determine whether the KRT-110 can fit within the available installation space of the fixture or production system.