Background

The Craftsman Air Compressor 921.166420 is a 20-gallon, 1.5 HP, oil-free, direct drive air compressor. It is designed to provide a source of compressed air for various tools and applications. The compressor is equipped with a regulator that controls the air pressure coming from the air tank. It also features a quick connect system for attaching and removing the air hose, a tank pressure gauge that indicates the reserve air pressure in the tank, and a pressure switch that controls the power to the motor and the cut-in/cut-out pressure settings.

The air compressor also includes a tank safety valve that allows excess tank pressure to escape into the atmosphere, a pressure relief valve that releases compressed air when the air compressor reaches cut-out pressure, and a tank drain valve for draining condensation from the air tank. Additionally, it has an air intake filter that provides clean air to the pump and a check valve that closes to retain air pressure inside the tank when the pump is not in operation. The air compressor is designed to be reliable and durable, with a focus on repairability and longevity.

Technical Specifications

  • Model Number: 921.166420
  • Product Type: Air Compressor
  • Pump: Oil-Free Direct Drive
  • Motor: 1.5 HP
  • Bore: 2.28"
  • Stroke: 0.87"
  • Voltage Single Phase: 120 VAC
  • Minimum Circuit Requirement: 15.0 Amps
  • Air Tank Capacity: 20 Gallons
  • Cut-in Pressure: 120 PSI
  • Cut-out Pressure: 150 PSI
  • SCFM @ 90 PSI: 3.8
  • SCFM @ 40 PSI: 5.1
  • Duty Cycle: 50%
  • Regulator: Controls the air pressure from the air tank
  • Air intake Filter: Provides clean air to the pump
  • Quick Connect: Offers a quick release feature for attaching and removing the air hose
  • Tank Pressure Gauge: Indicates the reserve air pressure in the tank
  • Outlet Tube: Connects to the air hose
  • Pressure Switch: Controls the power to the motor and the cut-in/cut-out pressure settings
  • Tank Safety Valve: Allows excess tank pressure to escape into the atmosphere
  • Pressure Relief Valve: Automatically releases compressed air when the air compressor reaches cut-out pressure
  • Tank Drain Valve: Used to drain condensation from the air tank
  • Check Valve: Closes to retain air pressure inside the tank

Warranty

The Craftsman Air Compressor 921.166420 comes with a one-year full warranty. This warranty covers any manufacturer's defects in material or workmanship that may occur within one year from the date of purchase. If the air compressor fails due to such defects, it can be returned to the nearest Sears store or service center in the United States for replacement or repair, free of charge. However, it is important to note that if the air compressor is used for commercial or rental purposes, the warranty only applies for 90 days from the date of purchase. To claim the warranty, customers can simply bring the faulty air compressor to a Sears store or service center. It is worth mentioning that this warranty provides specific legal rights, and customers may have additional rights that vary from state to state.

Craftsman 921.166420 Owners Manual