FAQs about Button-Locking Pins

Clamping force refers to the force generated when the balls pushed outward by the wedge contact the tapered surface inside the receptacle, pulling the plate inward.

If a tensile load exceeding the clamping force is applied, a gap may occur. However, the holding force refers to the ability to maintain the gap between the plates within 0.1 mm.

Tensile strength refers to the maximum load that the clamp can withstand when the plate is pulled away from the base.
Even when a tensile load exceeding the clamping force is applied, a gap may occur between the plates, but the wedge structure minimizes the gap.

Please refer to the technical data of each product below for details.

Series Size Clamping Force (N) Holding Force (N) Tensile Strength at Failure (N)
QCBU
QCBUS
0608-10 30 90 500
1012-16 50 150 1500

Yes.
This product can be used in applications subject to offset (moment) loads.

Please refer to the PDF below for guidelines on load calculations, gap generation, and precautions regarding product failure before determining suitability.

Guidelines for Applications with Offset (Moment) Loads

No.
The Mechanical Strength values do not include a safety factor.
These values represent the load levels at which failure can occur and should not be considered allowable loads.

Series Size Shear Strength at Failure (N) Tensile Strength at Failure (N)
QCBU
QCBUS
0608-10 3000 500
1012-16 9000 1500

To clamp, press the button while inserting the clamp into the receptacle, then release the button.
To unclamp, press the button again while removing the clamp.

Please refer to the table below for the typical button pressing force.

Series Size Button Pressing Force (N)
QCBU
QCBUS
0608-10 14
1012-16 26

Durability testing is conducted under no-load conditions, focusing on repeated clamping and unclamping of the clamper.
The results of the durability tests are shown below for reference when evaluating product suitability.

Series Durability Test Cycles
QCBU
QCBUS
30,000 cycles

Yes, provided that the combined thickness of the workpiece and the mounting plate is within the T dimension shown in the figure (tolerance: ±0.2 mm).

However, inserting a workpiece reduces the thickness of the mounting plate. Therefore, it is recommended to ensure sufficient plate thickness for proper operation

Yes.
When mounted on a vertical surface, the moment load generated by the weight of the workpiece may cause a gap between the plates.
When used in a hanging position, a gap may occur if the weight of the workpiece exceeds the clamping force.
Please refer to the table below for details.

Series Size Clamping Force (N) Shear Strength at Failure (N) Tensile Strength at Failure (N)
QCBU
QCBUS
0608-10 30 3000 500
1012-16 50 9000 1500

When using the product in a hanging position or on a vertical surface, be sure to implement adequate safety measures.

No.
This product is intended for use with plates 6 mm thick or greater.
For applications involving plates thinner than 6 mm, please consider using QCHC Hole Holding Clamp, which is designed for direct mounting on thin plates.

Hole Holding Clamps

Yes, the product can be used with a single clamp and receptacle set.
However, we recommend using locating pins to prevent the plate from rotating.