ELISERT®
TR FOR THERMOPLASTICS
Download the technical specifications
Here you can get a PDF with the product’s full technical specifications.
DownloadELISERT®
TR FOR THERMOPLASTICS
ELISERT® is a press-in expansion insert designed for use in molded thermoplastics. These inserts are characteristically easy to install, and their particular, knurled design ensures levels of tensile strength and pull-out resistance normally found in inserts installed by heat staking.
PRESS-IN installation
Technical data
TR INSERTS
STANDARD MATERIAL
Brass (B) – Other materials available upon request.
BENEFITS
- Self-blocking on the screw.
- High tensile strength and torque resistance.
- Easy press-in installation.
- Low installation torque on the screw.
- Suited for most thermoplastics.
DESIGN GUIDE
PREPARING THE HOLE
Molded holes are recommended whenever possible. The conical shape of a molded hole should not exceed 1°, and the recommended hole diameter is as measured at the level of the hole reached by the end of the insert. Drilled holes may be used, but performance may be slightly lower that with a molded hole. The upper part of the hole must not be rounded or chamfered, and be careful to avoid flaring. Hole diameter tolerance: -0.00 + 0.10 mm.
LOAD DIRECTION
The screw must always be inserted from the knurled end of the insert in order for the insert to expand in the manner it needs to for full efficacy of the fastener.
JOINT DESIGN
We recommend designing the joint in a manner that keeps any possibility of slippage to a minimum. For questions, contact PSM Celada Fasteners.
IMPACT OF SCREW SIZE
It is important that the screw pass all the way through the insert in order to fully expand it. Be sure that the length of the screw is sufficient to ensure full expansion before fully tightening the screw.
WALL THICKNESS
In the table, we provide a general guide for determining minimum wall thickness, which can vary based on the type of plastic used. It is possible to use thinner walls if necessary, but we highly recommend contacting PSM CELADA Fasteners for preliminary tests.