California Air Tools SP-9421 2.0 HP Oil-Free Motor/Pump – 110V, 60Hz, 125 PSI

California Air Tools SP-9421 2.0 HP Ultra Quiet Oil-Free Motor/Pump

The California Air Tools SP-9421 Ultra Quiet Oil-Free Motor/Pump is a replacement unit designed for compatible California Air Tools air compressors. Its oil-free dual-piston pump system is engineered to provide reliable airflow with reduced operating noise and maintenance requirements.

Powered by a 2.0 HP motor running at 1,680 RPM, this motor/pump delivers 6.40 CFM at 40 PSI and 5.30 CFM at 90 PSI. With a noise rating of 70 dB and a maximum pressure of 125 PSI, it is suitable for compatible compressor systems used in workshops, garages, and other applications requiring compressed air.

Key Features

• 2.0 HP ultra-quiet motor/pump
• Oil-free dual-piston pump system
• Operating noise level of approximately 70 dB
• Air delivery of 6.40 CFM at 40 PSI and 5.30 CFM at 90 PSI
• Maximum pressure rating of 125 PSI
• 110V, 60Hz electrical operation
• Motor speed of 1,680 RPM
• Thermal overload protection
• 70/30 duty cycle
• Maximum continuous running time of 30–60 minutes, depending on pressure and airflow demand
• Includes one capacitor, two air filters, and four shock struts
• ETL certified

Specifications

Compatible California Air Tools Models

The manufacturer lists compatibility with the following models and series:

• CAT-1620S, CAT-4620AC, and CAT-5020W
• CAT-10020AC, CAT-10020ACAD, CAT-10020C (first generation), CAT-10020CAD, and CAT-10020CHAD
• CAT-10020SPC and CAT-10020SPCAD
• CAT-15020C and CAT-20020 (first-generation models)
• CAT-20020AD and CAT-20020CTR
• CAT-10020DC, CAT-10020DCAD, CAT-10020DSPC, and CAT-10020DSMAD
• CAT-10020DSPCAD, CAT-10020HDCADC, CAT-10020SMAD, CAT-10020HDSMADC, and CAT-10020HDSPCADC

Verify the complete compressor model number, voltage, and mounting configuration before ordering. Compatibility may vary by generation and electrical configuration.

Installation and Safety Note

This product is a replacement motor/pump, not a complete air compressor. Proper installation requires suitable electrical and mechanical knowledge. The manufacturer specifies that an appropriately configured unloader or bleeder valve and check valve are required to release pressure from the pistons and help prevent motor damage.

Maintenance and Performance

The manufacturer states that the SP-9421 pump is designed for more than 3,000 operating hours before repair. Its oil-free design eliminates the need for pump oil changes. Follow the manufacturer's instructions for filter replacement, maintenance, and operating limits.