Job Report nº 15CX700B MEFairhurst StoneNeedFairhurst Stone one of the UK's leading Yorkstone suppliersrequired a new excavator to replace an existing 50 tonneCaterpillar 345 which had been working at the company's quarryin Ravensworth, North Yorkshire. The new replacement machinewould need to deliverer increased productivity, demonstrateimpressive lifting capability, offer good fuel efficiency, keepmaintenance costs down and reduce downtime.SolutionIn search of a more suitable machine for the demanding work tobe performed, Fairhurst Stone approached C J Leonard & Sonsfrom whom they had previously purchased a Case CX460 andCX130. To meet their exacting criteria. Fairhurst opted for theCase 70 tonne CX700B mass excavation unit, which is widelyregarded as one of the most productive machines in its class.
Work to be performedFormed in 1990 this family company has become one the UK's leadingsuppliers of Yorkstone. Operating from three quarries located inDerbyshire, Lancashire and Yorkshire they supply high grade stone forbespoke commissions to major building projects across the UK.The 70 tonne, 360 degree CX700B ME which was delivered in May 2012by C J Leonard & Sons, is currently working at Fairhurst's sandstonequarry at Ravensworth, North Yorkshire, where it digs out blocks ofstone weighing up to 30 tonnes. These blocks are then loaded into thecompany's own fleet of HGV's and taken to be cut into high quality Yorkstone slabs for paving and landscaping.Edward Fairhurst, Director of Fairhurst Stone explains why they chose toincrease their fleet with another machine from Case ConstructionEquipment “We already have a Case CX460 and a CX130 working at oneof our other quarries and they are both very good machines, so weapproached C J Leonard to see what Case could offer in place of the oldCat, as basically the Cat was too light for the duties here”.The CX700B ME weighs 20 tonnes more than the Cat 345 it replaces,but it performs like an even bigger machine. With tear-out forces of upto 224kN, extremely fast loading and a modern engine and hydraulicmanagement, the CX 700B ME is one of the most productive machinesin its class.Fitted with a Miller Rock Bucket, the new digger will pick up 30 tonneblocks with no difficulty, says Mr. Fairhurst. “The productivity is brilliant”he says, “It will move twice as much as the Cat”.Case CX700B METhe Case tradition of building strong, durable excavators is continued inthe CX700B ME. Powered by a highly efficient electronically-controlledcommon rail diesel engine, this Tier 3A compliant powerhouse providesnet power of 345kW (463hp). With a revised kinematic design, a shorterdipper arm and 19 per cent higher digging force, the CX700B ME is theideal machine for heavy quarry digging and mass excavation applicationsFuel efficiency is a major concern of any equipment owner, and the bigCase excavator promises to deliver low consumption for its size. “So farit seems to be working out similar to the Cat - but of course it's a muchbigger machine and it's doing twice the work” says Mr. Fairhurst.The machine, which is soon due to move to the company's quarry inWhitworth, Lancashire, works long hours and so operator comfort isextremely important. Despite its size, the machine offers the operatorexcellent machine control with rapid cycle times and high levels ofperformance. Equipped with the latest Case B Series cab, the CX700BME offers unrivalled space and comfort with minimal noise and vibrationto ensure fatigue-free operation on even the longest shifts.“The current operator liked his old Cat and to be honest he wasn't tookeen when the new Case turned up” admits Mr. Fairhurst. “But theCX700B ME has the new cab which is very comfortable and hasexcellent visibility, and once he'd acquainted himself with the new Casemachine, the operator's misgivings evaporated” adds Mr. Fairhurst.Operators can select from a choice of modes to suit the application: Superpower mode gives speed priority when required while Heavy Workingmode optimises productivity and fuel efficiency. The Automatic High Dumpmode helps reduce cycle times, thereby also boosting productivity.Safety is assured with a cab structure which is three times more rigidthan previous designs. The short joysticks provide excellent control withminimal effort.As well as low fuel consumption, the new Case CX700B ME has longservice intervals (for example, 5,000 hours between hydraulic fluidchanges and 1,000 hour bucket lubrication intervals) thus reducingmaintenance costs and machine downtime.Customer Quote - Edward Fairhurst,Director Fairhurst Stone“Because we have been very pleased with the performance of the two existing Case machines, and with the with the goodrelationship we have with CJ Leonard we wanted to see what Case could offer as a replacement for the Cat. We have not beendisappointed, the new Case CX700B ME is proving to have been a good choice, as it's delivering good productivity and fuel economy.”CNH UK LtdUnit 4 Hayfield Lane Business Park • Hayfield LaneDoncaster • DN9 3FL • UKwww.casece.com