Making an impact: Sandvik model boasts number of enhancements

SANDVIK has unveiled its next generation 2 Series QI442 track mobile impact crusher.

The model features the newly developed CI621 Prisec Impactor, which the manufacturer said comes with a ‘host of innovations’ for improved efficiency and greater safety during maintenance. 

The CI621 can be configured to work as either a primary or secondary machine, while the two hydraulically assisted curtains can be adjusted to produce a wide range of product sizes.

Further enhancements include a new rotor position and locking device, new hammer locking wedges, and a new wedge removal tool. 

Sandvik added that the rotor bearings have also been upgraded for easier assembly and clearance setting, in addition to an ‘improved’ sealing system and ‘greater range’ of adjustment in curtains. 

One benefit incorporated into the QI442 is the optional modular hanging screen system. Recently launched on Sandvik’s mobile cone crushers, this system is interchangeable and is said to offer the flexibility for the crusher to operate in open or closed circuit. 

Sandvik said the design enables set-up in less than 30 minutes and can be fitted without the use of additional lifting equipment. The patent-pending hanging screen option is described as delivering multi-functionality as a 1, 2 or 3-way split screener, as well as a ‘highly productive and efficient’ impact crusher. 

The double deck hanging screen allows the machine to produce two screened products and recirculate the oversize back into the feed conveyor. The oversize conveyor may be hydraulically rotated for material stockpiling (90°) of up to three products on the floor, or removal (180°). The tail section can be raised hydraulically to give improved ground clearance for transport when loading or unloading.

The QI442 comes with Sandvik My Fleet remote monitoring system as standard. This allows customers to know how their equipment is being utilised.

A pre-screen is fitted to ensure boost scalping capability and prevent any undersize material passing through the impactor. This also allows a specific sized product to be produced from the natural fines conveyor. The pre-screen has a choice of grizzly or punch plate top deck and mesh bottom, while the underpan feeder is said to reduce spillage generally associated with impact crushers.