New compression limiters – machined to protect 29 April 2024

Precision engineered component manufacturer, SPIROL, has introduced its new CL6000 series of lightweight, precision machined, compression limiters.

Lead-free and made of aluminium, the new compression limiters have been designed to reinforce high stress joints in plastic assemblies, where bolts are used to connect two components and where they protect the plastic from excessive compression by absorbing the load when the bolt is tightened to the recommended torque. This ensures the durability and reliability of the joint throughout the product’s lifespan.

SPIROL points out that the CL6000 compression limiters are machined from 2024 grade aluminium, which provides the best combination of strength, corrosion resistance, machineability and cost, but which also makes them 40% stronger and ⅓ of the weight of the same compression limiter made from brass.

When it comes to applications that require extra bearing surface for the mating component, another product, the CL6100 headed compression limiter has also been launched, with all of the features of the CL6000, but with the addition of a head. Similarly, for applications that require a galvanic alternative to aluminium, Spirol has introduced its new CL8000 brass, precision machined, compression limiters, along with the corresponding CL8100 headed brass version.

SPIROL’s different standard types of compression limiters are intended to meet specific application requirements and assembly methods, which is why the current/legacy series CL600 and CL800 limiter lines are being replaced with the enhanced CL6000 and CL8000. The new products offer benefits that include: Precision through enhanced control of critical features and better geometric dimensioning and tolerancing, making this series ideal for highly automated, or moulded assembly processes; retention as a result of superior knurl formation and control, which result in more consistent and robust retention performance in post mould, assembly processes; and a wider product range, with the larger selection of standard products meeting expansive application requirements and preferences.

The new, standard, precision machined, compression limiters are available in a wide range of standard sizes, in both aluminium and brass, and in headed and non-headed configurations.

SPIROL’s engineering team can also help determine the most appropriate compression limiter for a specific project, offering complimentary design assistance and technical support.




Deputy Editor

Claire Aldridge Deputy Editor t: +44 (0) 1727 743 889


Having spent a decade in the fastener industry experiencing every facet – from steel mills, fastener manufacturers, wholesalers, distributors, as well as machinery builders and plating + coating companies, Claire has developed an in-depth knowledge of all things fasteners.

Alongside visiting numerous companies, exhibitions and conferences around the world, Claire has also interviewed high profile figures – focusing on key topics impacting the sector and making sure readers stay up to date with the latest developments within the industry.