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    Bollard Grips for Tensile Testing

    Products > Tensile Grips > Bollard Grips
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    Bollard Grips are used on a Universal Testing Machine to perform tensile tests on filament material such as string, thread, wire and yarn.  The specimen is wrapped around a bollard or post and then secured with a vise grip mechanism.  The term bollard comes from the maritime industry and is used to describe a thick, short post on a ship deck or dock which is used to wrap a rope around to anchor the vessel.

     

     

    There are a few different types of bollard fixtures available depending on the strength of the material and the diameter of the bollard. A larger diameter helps to reduce uneven stress on the sample and premature test breaks. Most users will know which design they prefer, however suggestions can be made based on the type of material to be tested. Simple yarns and filaments can be tested with the simpler, small diameter bollard grips. Higher tensile strength samples such as thin wires and performance textile threads are tested with the larger diameter. Pneumatic versions of the bollard grips are also available which help to speed up set-up time and make the testing more uniform.  

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    Another advantage of the bollard grip is that is uses less sample material than our lower cost Rope Grips. 

     

                                                                 

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    Simple Pneumatic Bollard Grips
    		Bollard Grips for tensile testing
    		Bollard Testing Fixtures
    Bollard Grips Schematic Design
    		basic bollard grips
    		medium sized pneumatic bollard grips
    Bollard Grips with counterweight
    		2.6kN Pneumatic Bollard Grip
    		Bollard Fixture with Counterweight
    Low Cost Bollard Grip

    Bollard Grip Counter-Weight

    Bollard grips are sold in pairs and one of the grips is slightly different than the other. The top grip which attaches to the end of the load cell has a counter-weight for balance. The balanced grip hangs perfectly off of the load cell and ensures good measurement data. 

    2.6kN Pneumatic Bollard Grip.jpg
    100 lb. Pneumatic Bollard Grip- 200 N

    This small pneumatic fixture is great for low tensile strength samples such as yarn. 

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    Cut Sheet
    2.6kN Pneumatic Bollard Grip.jpg
    500 lb. Pneumatic Bollard Grip- 2.5 kN

    The pneumatic bollard grip is one of the most popular grips for testing thin, cylindrical materials. This fixture is perfect for testing fishing line.

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    Cut Sheet
    Bollard Grips with Counterweight.jpg
    1K lb. Bollard Grip - 5kN

    The 1K Bollard Grip has a wide diameter and is mechanical. A vise grip is used to tighten the sample down. This grip is great for testing wire and high tensile strength filaments. 

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    Cut Sheet
    1K lb. Pneumatic Bollard Grip - 5kN

    The 5kN Pneumatic Bollard Grip is a nice option for high throughput testing environments. These grips can take a minimum length of about 250mm.

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    Cut Sheet

    For testing cords and other cylindrical specimens over 5kN and higher, please visit our Rope Grips page.