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Multi-Finned Cylinders
Cooler operating temperatures result in longer life and consistent performance over time.
Integral Cylinder/Head
Gasketless design eliminates the possibility of blown head gaskets for trouble-free operation.
Balanced Pistons
Aluminum alloy first-stage piston and cast iron second-stage piston ensure proper balance.
Piston Rings
Two high efficient lap joint compression rings with bi-directional seal provide the most efficient air delivery.
Lightweight Connecting Rods
High-density, die-cast aluminum alloy rods minimize reciprocating weight. An integral, precisionbored crankpin bearing and needle bearing for the wrist pin minimize friction and properly distribute loads for extremely long life.
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Pressure Relief Valves
Located in interstage and discharge.
Large Capacity Crankcase
Rugged cast iron oil reservoir has convenient sight gauge glass, corner oil fill boss and large oil drain.
Intercoolers
Large diameter finned tubing is positioned to obtain the greatest cooling effect between stages for maximum compressor efficiency.
Optimized Cooling Fan/ Flywheel
Precision balanced flywheel has fan blades for optimum compressor cooling and life.
Reliable, High-Flow Disc Valves
Single-unit, disc-type valves provide low lift and long life. Discs are made of corrosion resistant steel, valves are easily serviced by removing the manifolds.
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Oversized Main Bearings
Tapered roller-type main bearings provide full contact and support of the crankshaft plus deliver the longest possible life.
Balanced Crankshaft
Constructed of rugged ductile iron with large diameter throws for minimum bearing loads and large counterweights to minimize vibration.
Loadless Starting
Mechanical governor-type centrifugal unloader assures longer motor life by allowing the compressor to start unloaded every time.
Loaded with rugged features, the R-Series splash-lubricated compressors deliver high performance, long life, and tremendous value.
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