"Expander System" solves the wear of movable parts in construction machinery and factory equipment.
Expander System
Can be used as a replacement for existing pins. It significantly reduces maintenance costs for equipment and is an innovative pin product that can be used universally in any moving part.
Wear occurring in movable parts is a major enemy of low-cost operation, as it requires regular maintenance such as bush replacement and pin hole repair. For equipment manufacturers, it is an issue that cannot be overlooked, as it increases maintenance costs, which are a quality indicator of the machine, and shortens product lifespan. For machine users, it leads to chronic problems of high maintenance costs and downtime. The advantage of the Expander System is that it can be used semi-permanently and completely prevents wear in movable parts, eliminating the need to replace bushes like consumables. In movable parts that do not use bushes, it can eliminate oval deformation. The secret lies in the fact that after installation, the pin's axis expands in a way that completely seals the gaps inside the pin hole. The Expander System is already widely adopted by top construction equipment manufacturers, including Japanese companies, and has passed a continuous practical durability test of 60,000 hours without any loss of functionality at Volvo Construction Equipment. It comes with a lifetime warranty, guaranteeing the product's functionality until the first removal. *For more details, please download the catalog or feel free to contact us.
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basic information
The Expander System features a unique expansion mechanism that, after being inserted into a pin hole, expands within the hole to perfectly fill the gap. As a result, stress is distributed from surface contact to the entire area, protecting the pin hole. Additionally, this mechanism creates a fixed beam condition at both ends, which reduces the bending stress on the pin by half, significantly lowering the risk of pin breakage. In practical durability tests conducted by Volvo Construction Equipment in Sweden, the system operated continuously for an astonishing 50,000 hours (approximately 6 years) without any issues. Moreover, the Expander System's versatility as an all-around solution that can be used as an attachment pin for buckets, as a pin for construction machine arms, or as a pin for movable parts of transport vehicles is a significant strength. 【Features】 ■Significantly reduces maintenance costs and time ■Extends the lifespan of machines and equipment ■Easy installation for anyone ■Certification obtained for major standards in Europe ■Guarantees product functionality until the first removal *For more details about the Expander System, please contact Nord-Lock Japan.
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*For more details, please refer to the catalog. You can also watch the product introduction video at the URL below.* https://www.youtube.com/watch?v=q08Xf4LfWAo
Detailed information
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Mechanism of the Expander System The Expander System expands the pin diameter inside the pin hole by tightening the bolts (or nuts) at both ends, which pushes a slotted sleeve onto a tapered shaft. This fundamentally resolves the cause of wear that was repeatedly occurring due to collisions in the slight gaps whenever stress was applied to the pin hole, thereby addressing wear in the movable parts.
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Company information
Nortlock Japan Co., Ltd. aims to be a partner in solving all bolt fastening challenges, centered around four brands: the "Nortlock Washer," a locking mechanism that does not rely on friction and prevents loosening; the "Superbolt," which allows enormous bolts and nuts that cannot be tightened by hand to be tightened with just one torque wrench; the "Boltight," which can simultaneously tighten multiple large-diameter bolts with uniform pressure; and the "Expander," a pivot pin for construction and heavy machinery that can be used semi-permanently.