Rugged Cast Iron Body
All Cardinal pumps offer rugged split casing design with heavy-duty class 30 cast iron used for the pump casting, motor enclosures, impellers and volutes to provide long life in the field.
Precision-Made Sleeve Bearings
Cardinal offers three bearing types: standard sleeve bearing, the Harley™ sleeve bearing by Cardinal, and the Harley™ sleeve bearing with TecSonics™ bearing wear monitoring.
All Cardinal pump and motor units are pressure-tested to 50 PSIG to ensure the integrity of the complete unit.
Ground Shafts and Dynamic Balancing
All Cardinal sleeve bearing pumps have the bearing journals and thrust surfaces ground between centers to ensure alignment and surface finish. All pump shaft, impeller, and motor assemblies are dynamically balanced for long-term operation.
Motor windings are all tested for 60 seconds at (2 x voltage + 1000) to ensure electrical integrity and continuity, with winding resistance taken both before and after the pump is built. All Cardinal pumps are meggar tested to ensure the integrity of the insulation.
Impellers are designed to permit thermo-siphon flow when the pump is not operating, allowing natural convection even when the pump is completely shut off.
Continuous duty operating temperature ranges from –40ºC (–40ºF) to 100ºC (212ºF).
Special coating is applied to the outside of the pump to protect it from rust. Internal surfaces of the casing can be coated at the customer’s request.
Highly efficient oil-immersed motors are available in single or dual voltage, single or three phase, 50 or 60 hertz frequencies.
Cardinal Pumps can also be specially designed to meet existing pump dimensions and performance requirements, including pumps suitable for rail car service.