Compression Limiters

Compression limiters are often used when an application includes a plastic assembly which has a compressive load to bear. The compression limiter strengthens the assembly and takes on the load that is applied when a bolt is tightened within the assembly. When a compression limiter is used, the plastic's integrity is not compromised by the added pressure.

Availability

Stock & OnDemand
Yes
Custom
Yes

Custom Manufacturing

Custom Compression Limiters

We produce custom compression limiters designed to exact specifications for a variety of industries and applications. We can produce various lengths and overall sizes to accommodate both U.S. and metric bolts.

All that's needed to create a custom compression limiter is your design type, material preference, part length, ID, OD, installation method, and if you require a plating of finish. More details about these manufacturing specifications are listed below.

To customize a compression limiter or send us your design and specifications, request a custom quote.

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Industrial manufacturing facility

Compression Limiters Manufacturing

Our compression limiters are produced using brass, aluminum, stainless steel, or steel and can be produced with or without a variety of plating finishing options as well as optional quality certifications. Review our capabilities here.

Have a specific question about compression limiter manufacturing? Ask an MW expert.

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Compression limiters

Related Manufacturing Services

In addition to standard engineering and manufacturing services, we offer various additional services which can be performed at your request.

  • CAD Modeling
  • CNC Machining
  • Grinding
  • Heat Treating
  • Parts Cleaning
  • Plating
  • Prototyping
  • Testing
  • Tooling

Quality Materials

MW produces compression limiters made from a variety of standard and specialty materials. Some examples of commonly requested materials used to make these products include the below:

  • Aluminum
  • Brass
  • Stainless Steel
  • Steel

Certifications

View Full List of Available Certifications

  • DFARS
  • ISO9001:2015
  • REACH
  • RoHS

Common Compression Limiter Configurations

  • Flanged Short Compression Limiters

    Flanged – Short

    Designed for ultrasonic, thermal, press-in, or mold-in installation methods. The flange provides a larger bearing surface/contact area and also acts as a washer.

  • Flanged Long Compression Limiters

    Flanged – Long

    Designed for ultrasonic, thermal, press-in, or mold-in installation methods. The flange provides a larger bearing surface/contact area and also acts as a washer.

  • Symmetrical Short Compression Limiters

    Symmetrical – Short

    Designed for ultrasonic, thermal, press-in, or mold-in installation methods. It has a straight or diagonal knurl and is symmetrical in design so it can be installed either way without orientation into the hole or onto the core pin.

  • Symmetrical Long Compression Limiters

    Symmetrical – Long

    Designed for ultrasonic, thermal, press-in, or mold-in installation methods. It has a straight or diagonal knurl and is symmetrical in design so it can be installed either way without orientation into the hole or onto the core pin.

  • Knurled Compression Limiters

    Full Diamond Knurl

    Designed for mold-in installation only. The diamond knurled design allows the plastic to fill in the peaks and valleys to lock the insert in place. This style also resists tensile loads and also provides added torque resistance compared to non-knurled styles. The part is symmetrical and requires no orientation.

  • Non-Knurled Compression Limiters

    Non-Knurled Symmetrical Mold-In

    Designed for mold-in installation only. The undercut feature allows for plastic fill, therefore providing resistance to tensile loads. If any rotational torque loads are present consider a knurled design for added resistance. The part is symmetrical and requires no orientation.

Compression Limiter Installation Methods

Press In: This method assumes that no melting of the plastic takes place. The insert (compression limiter) is pressed in place with a pre-determined amount of interference to the hole.

Mold In: This method assumes the part will be placed onto a core pin in the mold and the plastic will be molded around the part.

Thermal Insertion: During this process, the insert (compression limiter) is placed into a molded or drilled hole that is slightly smaller than the main diameter of the insert. A heated probe then contacts the insert, causing the plastic to melt in a localized area around the insert. The insert is driven to the required depth or slightly below to allow for a slight withdrawal that may occur. The probe is then removed and the plastic re-solidifies around the insert. This process provides similar results when compared to ultrasonic insertion but utilizes “heat” rather than ultrasonic energy to melt the plastic.

Ultrasonic Insertion: During this process, an insert is placed into a molded or drilled hole that is slightly smaller than the main diameter of the insert. Ultrasonic energy is applied to the insert with the use of an ultrasonic welder and a hardened steel or titanium horn. The ultrasonic energy develops frictional heat at the interface of the insert and plastic. This causes localized melting of the plastic while the insert is driven to the required depth. The plastic then re-solidifies, and the insert is secured in place.