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Longer Tire LifeGeneration 2 SR drive systems combinetrue independent four wheel drivewith an advanced instantaneouswheel speed control system for bettertraction and less slippage. In fact, allGeneration 2 wheel loaders boast theadded benefit of extended tire wear – upto double that offered by conventionalmechanical drive machines.Reduced Fuel Burn –Increased Fuel EfficiencyGeneration 2 SR electric drive wheelloaders deliver outstanding fuelefficiency – in some cases up to 45%less fuel consumption than comparablesized mechanical drive wheel loaders –because they are engineered for the mostfuel efficient operation possible. Ourexclusive SR electric drive system is thekey. This advanced system allows theengine to operate at constant ratedrpm. Our competitors are required toaccelerate and decelerate through theengine RPM range with gear changesduring the loading cycle in order to followthe engine torque curve. This results insignificantly greater fuel consumption.Another important advantage with SRelectric drive is that the motors are usedto generate recoverable power. Whilein braking/retarding, the power that isgenerated by the wheel motors is fedback into the generator, which thenperforms as a motor powering the engine,overcoming parasitic and hydraulics loads,reducing engine HP requirements andsaving fuel. We’re so confident of the fuelefficiency of our wheel loaders that weare prepared to guarantee lower fuelconsumption when compared to similarsized mechanical drive machine.Save money on fuel with a P&HLeTourneau-Series wheel loader!Less Maintenance and DowntimeThe Generation 2 machines have nocarbon brushes to chip, burn,monitor or replace; as well as, nocommutator to grind, undercutor replace. The SR motors/generatorconsist of a simple, virtually, indestructiblelaminated stack, iron rotor without copperwindings to fail due to over-speed oroverheating and features simple DC statorfield coils. SR drive eliminates thoseconcerns and limits motor maintenanceto replacing two bearings on the motorsand one bearing on the generator aboutevery 20,000 to 30,000 hours, greatlyreducing scheduled maintenance anddown time.SR DriveStandard equipment on all Generation2 wheel loaders, the proven SR drivetechnology delivers a high level ofperformance and reliability. Simpleby design, the SR traction motorprovides maximum torque at slowestRPM for optimum digging. In fact,unlike mechanical drive competitors,peak tractive effort (rimpull) is achievedrequiring approximately twenty-fivepercent (25%) of the engines ratedhorsepower. Also, unlike conventionaldiesel electric drive systems there isno risk of damage to the tractionmotors under stall conditions, whiledigging in the face. This allows theoperator to work quickly without the fearof damaging the traction motors.It all translates into faster response tooperator inputs and ultimately, greaterdigging power.Generation 2 Wheel Loader Product Overview | Joy Global | 7