In aluminum profile anodizing production, manufacturers often process different extrusion designs with various cross-sections, wall thicknesses, and gripping positions.
A single anodizing line may handle architectural profiles, industrial aluminum extrusions, and customized sections. Because these profiles have different geometries, pneumatic clamp selection cannot rely on only one dimension.
The KRT-087 Pneumatic Clamp provides three key specifications:
Overall Length: 135 mm
Resting Opening: 18 mm
Maximum Opening: 81 mm
Among these specifications, the 81 mm maximum opening provides an important reference for profile loading clearance, while the 135 mm overall length and 18 mm resting opening help engineers evaluate installation space and clamp configuration.
Why Do Multi-Size Aluminum Profiles Require Proper Clamp Selection?
Aluminum extrusion production involves many different profile designs.
Different industries, customer requirements, and extrusion dies create profiles with different widths, wall thicknesses, grooves, ribs, and gripping areas.
During anodizing, a pneumatic clamp must achieve two objectives:
First, the profile must enter the jaws smoothly.
Second, the clamp must fit properly within the production rack system.
A common mistake is selecting a clamp based only on the total width of the aluminum profile.
However, the clamp does not usually contact the entire extrusion.
It contacts a specific area such as:
- an edge
- a rib
- a flange
- a designated gripping section
Therefore, the most important selection factor is:
The actual gripping position, not only the overall profile size.
What Does the 81mm Maximum Opening Mean for Different Profiles?
The KRT-087 provides:
Maximum Opening: 81 mm
This specification is mainly used to evaluate whether the profile has enough clearance to enter the clamp.
It is especially important for:
Large Industrial Aluminum Profiles
Industrial extrusions often contain thicker structures and internal reinforcement sections.
During rack loading, sufficient jaw-opening space is required for proper positioning.
Architectural Aluminum Profiles
Architectural profiles often include:
- grooves
- flanges
- reinforcement sections
- asymmetric edges
These structures can require more opening space than simple profile measurements suggest.
Customized Aluminum Extrusions
For non-standard profiles, width and height alone are usually insufficient for clamp selection.
The 81 mm maximum opening can be used as an initial reference before confirming compatibility through profile drawings.
It is important to understand:
Maximum Opening: 81 mm
does not mean:
Maximum Clamping Thickness: 81 mm
Actual compatibility depends on the profile geometry and gripping location.
Why Is the 18mm Resting Opening Also Important?
Besides the maximum opening, the KRT-087 provides:
Resting Opening: 18 mm
This specification describes the jaw position when the clamp is in its natural state.
It helps engineers understand the initial structure of the clamp.
However, 18 mm should not be considered the minimum clamping size.
Actual gripping capability depends on:
- profile thickness
- gripping location
- jaw contact area
- extrusion surface structure
For example, two profiles with the same thickness may require different clamp solutions if one has a flat gripping edge while the other has a raised feature.
How Does the 135mm Overall Length Affect Production Layout?
In continuous anodizing lines, clamps must not only hold profiles but also fit within the rack system.
The KRT-087 has:
Overall Length: 135 mm
This dimension helps engineers evaluate:
- clamp spacing
- profile arrangement
- rack structure
- installation limitations
For compact anodizing systems, overall clamp length is as important as jaw opening.
A clamp with suitable opening dimensions may still be unsuitable if its body size does not match the production layout.
KRT-087 Pneumatic Clamp Selection Guide
1. Confirm the Actual Gripping Position
Do not provide only the overall profile dimensions.
Recommended information includes:
- aluminum profile cross-section drawing
- actual gripping area
- gripping edge size
- loading direction
This allows engineers to evaluate whether the 81 mm maximum opening is suitable.
2. Match the Maximum Required Clearance
Measure the largest section that must enter the clamp.
Then compare it with:
81 mm Maximum Opening
If the required clearance exceeds 81 mm, a larger-opening clamp should be considered.
3. Check Installation Space
Besides opening size, verify:
135 mm Overall Length
against the rack layout.
4. Verify Irregular Profiles Before Ordering
For profiles with grooves, ribs, or flanges, provide samples or drawings before final clamp selection.
FAQ
Is KRT-087 suitable for all aluminum profiles below 81 mm?
Not necessarily.
The 81 mm value represents maximum opening, not a guaranteed compatible profile size.
Compatibility depends on profile geometry, gripping position, and contact condition.
Why should clamp selection not be based only on profile width?
Because the clamp contacts a specific gripping section rather than the complete extrusion shape.
The gripping position provides more useful selection information than overall width alone.
What is the purpose of the 18mm resting opening?
The 18 mm resting opening describes the natural jaw position of the clamp.
It helps engineers understand the initial clamp structure but does not define the minimum clamping size.
What are the main KRT-087 selection parameters?
The three key dimensions are:
- Overall Length: 135 mm
- Resting Opening: 18 mm
- Maximum Opening: 81 mm
These specifications should be evaluated together with profile geometry and production-line layout.
Conclusion
For aluminum extrusion plants processing multiple profile sizes, pneumatic clamp selection requires more than checking maximum opening.
The KRT-087 provides:
81 mm Maximum Opening
for profile loading clearance evaluation;
18 mm Resting Opening
for understanding the initial jaw position;
and
135 mm Overall Length
for production-line layout consideration.
Understanding these dimensions allows engineers to select a more suitable pneumatic clamp solution for aluminum profile anodizing applications.
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