ARB Air Lockers
ARB created its Air locker diff insert range to provide 100 percent traction on demand, without sacrificing a 4WD’s on- road performance.
ARB Air Lockers work by using a 12 volt air compressor to activate and deactivate a solid and durable locking mechanism inside the differential. Delivering traction on demand at the flick of a dash mounted switch, the Air Lockers allow owners to drive at a slower and more controlled pace, even in the harshest terrain.
The company launched its Air Locker range back in 1988 and since then has sold thousands units to satisfied customers throughout the world.
Design has evolved
Since 1988 it has also been evolving the Air Locker design to the point where it now incorporates features such as forged gears, timed gearing and a two-piece design, along with launching a new logo and five- year warranty. The phenomenal amount of force applied to the gears means that their strength, durability and fatigue resistance is paramount, so forged gears have been implemented across the range. When combined with ARB’s patented ‘ timed gear’ design, the resulting strength of the whole assembly is amplified. Simply put, timing the gears ensures that no matter when the Air Locker is activated, the gear teeth will always ‘ lock’ into predetermined positions that offer the greatest surface area between the gear teeth. This ensures that optimal locking strength is achieved every time the Air Locker is activated. A two-piece case brings further benefits. Machining a case from two pieces instead of three results in a much higher dimensional accuracy of the finished assembly. Eliminating the smaller cylinder cap as a separate part and switching the air entry to the crown wheel side of the differential not only adds huge strength, it also allows ARB to refine the locking mechanism design, eliminate the need for an internal annular piston, and lock the side gear directly to a redesigned highstrength flange cap. This also allows the locking ring to reside closer to the splined side gear, considerably reducing actuation and disengagement time.
ARB’s Air Locker division, based in Melbourne, utilises the latest arsenal of software programs, including Solidworks, CAD and Cosmos, in the development of all Air Lockers. The lengthy design process involves countless hours of testing using Finite Element Analysis ( FEA), which allows the engineers to subject each Air Locker design to ‘ virtual’ off road driving simulations which are impossible to replicate in the real world. Prototypes are then fit ted to 4WDs for real-world testing in the Outback NSW, the Flinders Ranges and Victorian High Country. Prototypes have also been sent internationally to be put through their paces in extreme off road racing events like the iconic King of the Hammers in the Southern California desert. ARB Air Lockers are all manufactured in a world class, aerospace standard machine shop in Melbourne. Utilising aerospace grade materials and state of the art machinery, the facility ensures that the Air Locker maintains its reputation for quality, durability and reliability throughout the world. ARB Air Lockers are available for an extensive range of vehicle models, with over 100 applications. For more Information or Technical Support contact your nearest ARB Agent on 0800 ARB 4WD ( 272 493) or go to www.arb4x4.co.nz.
Founded in 1975 in Melbourne, ARB 4x4 Accessories is now Australia’s largest manufacturer and distributor of aftermarket 4WD accessories. With products including bull bars, protection equipment, Old Man Emu suspension, Air Lockers, roof racks, canopies and recovery equipment, our primary mission is to prepare vehicles for the remote and harsh conditions t ypically encountered off road. ARB currently has 47 stores and over a hundred stockists located across Australia, an office in Seattle, USA, and an export network reaching more than a hundred countries.
ARB Air Locker diff inserts provide traction on demand.
An ARB Air Locker installed…
And ready for shipping