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Second to none

The new Sandvik CS550 cone crusher is a powerful secondary stage crusher for up to 700-tonne applications. In addition to flexibility and sheer tonnage, it offers advanced automation and maintenance features for maximal uptime.

Text: Turkka KulmalaPhoto: Bästa KompisarPublished: 8 March 2017

The realities of today’s economy force all crushing operators to take a hard look at their effectiveness and productivity. Can the process be more efficient without increasing the environmental footprint? Does it adequately meet the safety requirements set by EU’s Machine Directive? A key goal is to accomplish more work – essentially the sum of crusher capacity and reduction ratio – in each crushing stage while never losing sight of overall efficiency. These ideas drove Sandvik Mining and Rock Technology to design Sandvik CS550, its latest next-generation cone crusher. Launched at the triennial CONEXPO-CON/AGG show in Las Vegas, the newcomer complements the first two 500-series crushers, Sandvik CH550 and Sandvik CH540. Higer reduction rates Sandvik CS550 is a reliable, high-capacity and high-reduction workhorse for the secondary crushing stages. While nothing prevents Sandvik CS550 from being used in mining applications, its primary mission is stationary construction use. From a practical standpoint this means aggregate quarries, while contractors looking for mobile solutions may also benefit.

Tech specs: Sandvik CS550

Total weight crusher: 24,650 kg/54,350 lbs Total weight crusher on subframe: 30,670 kg/ 67,620 lbs Height, foot to top feed hopper: 2,775 mm/109˝ Max. permitted power: 330 kW/443 hp Capacity: 230–720 tph CSS range: 27–70 mm/1 1/6˝–2 3/4˝ Max. feed size: 345–431 mm/13 19/32˝–16 31/32˝ Throw range: 24–48 mm/1˝–1 7/8˝

Sandvik CS550 achieves up to 25 percent higher reduction ratios compared to similar types of crushers. This enables the use of a larger jaw crusher in the primary stage and relieves the tertiary stage of some of its size reduction load, allowing a sharper quality focus. In some applications, Sandvik CS550 can already produce some finished material in the secondary stage. Sandvik CS550 furthermore decreases the recirculating load by up to 50 percent with no decrease in the output of high-value product. In other words, less material goes back into the crusher to be reprocessed.

This extends the service life of the wear parts, including particularly the costly manganese steel crushing chambers.Right for a wide spectrum of applications Right for a wide spectrum of applications “Sandvik CS550 has a big intake to match the jaw crusher in the primary stage, with the possibility to produce large volumes, delivering a high reduction ratio and an excellent shape of the end product,” says Martin Johansson, life cycle manager cones and gyratory crushers with Sandvik Mining and Rock Technology. “The wide range when it comes to closed side settings, together with more and bigger throws, gives you extreme flexibility as Sandvik CS550 can be set to fit a huge variety of application needs.” Owners of existing installations looking to upgrade their secondary crushing stage to match market growth now have an alluring option. The new cone crusher’s bigger intake capacity and adjustable eccentric throw enable higher capacity in the secondary stage. This allows opening up of the jaw crusher to process more material in the primary stage and to increase overall production.

Diminishing downtime The simple economics work in mines as well. These 24/7 operations are all about tonnage and extreme reliability with minimum downtime. More reduction in the secondary stage means more final product to bypass tertiary crushing. Less recirculation means less wear and less downtime. A mine may not typically need additional crushing capacity, but a more powerful secondary crusher enables tertiary capacity reduction and provides finer infeed for milling, resulting in substantial energy savings potential for the overall comminution process.

”We can make a huge impact on life-cycle costs, all backed up by real-world numbers

A major competitiveness factor for Sandvik CS550 in all applications is the complete elimination of plastic backing materials in the crushing chamber and substantial improvements in the maintenance ergonomics, including extensive commonalities with other Sandvik cone crushers. Eliminating the plastics also eliminates curing times and shortens downtimes thanks to quicker liner changes. Fumes from toxic backing materials are avoided, exposure to hazardous handling and welding is reduced, and there is no need to dispose of plastic waste.

Key benefits

Sandvik CS550 – key benefits in construction applications

High intake capacity for increased productivity
Bigger throw for more flexibility in varying needs
Advanced automation for optimal capacity, reduction and process security

Sandvik CS550 – key benefits in mining applications

Higher reduction ratio enables substantial energy savings in downstream comminution stages
Reduced recirculation for less wear and less downtime
More uptime through easier, quicker, safer maintenance

Other time savers include a new quick-release function for faster extraction of the concave from the top shell, enabling up to 90 percent faster liner change. The redesigned crushing chamber requires 65 percent less lifting during regular liner changes compared to Sandvik CS440. Automation station Sandvik crushers are engineered to maximize the company’s proven automation technology. The automatic setting system ASRi optimizes crusher operation for efficiency and adapts to variations in feed conditions by means of continuous liner wear measurement and compensation. The Hydroset system provides automatic hydraulically powered mainshaft positioning and overload protection to permit the passage of uncrushables. The automation and control system offered as standard for Sandvik 500-series crushers ensures optimal capacity and reduction settings for the high-powered equipment. Crusher operators’ top concerns – end-product quality, life-cycle costs, maximum productivity and uptime – call for well-rounded solutions where all crushing and screening stages as well as energy consumption and consumables are accounted for.

Sandvik offers application knowledge, training capabilities and service that help meet these needs. “The quarry managers’ decisions basically come down to balancing the capex and life-cycle costs,” Johansson says. “With our expertise, training, and service offering, we can make a huge impact on the life-cycle costs – all backed up by real-world numbers.”