SANDVIK Mobile Crushers and Screens has launched its new QA452, described as the latest evolution of the Sandvik QA Series products and three-deck Doublescreen technology.
The manufacturer revealed it has engineered the ‘first of its kind’, three-deck tracked mobile plant with independent screen angle adjustment and hydraulic screen separation, patent-pending. The product features two triple deck inline screen boxes with equal size screen decks, each providing 9m3/100 sq ft of screening area.
Sandvik said screen enhancements include an 11% longer bottom screen deck to extract more fines. Featuring independent screen angle adjustment, the primary screen can be independently adjusted from the secondary screen, allowing operators to optimise throughput, screening efficiency, and product gradations. Sandvik explained the primary screen performs as a fines extractor, whilst the secondary screen performs as a grader.
Sandvik offers a hybrid ‘e’ drive with electric plug-in, which the firm said means operators can choose the most ‘economical and efficient’ energy source. The QA452 hydraulic system is said to have been ‘enhanced’ to reduce energy wastage, while hydraulic oil change intervals have been extended from 2,000 to 4,000 hours meaning up to 50% less hydraulic oil is consumed over 10,000 hours of machine usage (subject to oil sampling).
The primary screen can also be hydraulically separated to gain better access for maintenance and screen media changes. Sandvik said the addition of a new oversize cross conveyor means greater oversize material extraction. This cross conveyor can also be reversed, to allow the plant to function like a two-deck screen with oversize and mid overs discharged together.
Each screen deck features end tension screen media using Sandvik’s mesh tensioning system. This, the manufacturer stated, means faster screen mesh tensioning and removal when you need uptime.
Safety features include dust suppression spray bars, onboard water pump, safety pull cords, and lighting mast all fitted as standard.
The QA452 comes with Sandvik’s My Fleet telemetry system and seven-year data subscription as standard.