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Silver air ratchet with 3/8 inch drive, 10 inch length, rear exhaust

SPEEDAIRE

SPEEDAIRE 21AA63 3/8 in Air Ratchet

SKU CH-Y7NT-WX8PP

Air-powered ratchet with a 3/8 in drive delivering 50 ft-lb torque at 150 RPM for industrial fastening tasks

  • Delivers 50 ft-lb torque for demanding fastening jobs
  • Free speed of 150 RPM speeds through repetitive tasks
  • 10-inch overall length reaches into tight engine bays
  • Lightweight 2.6-lb design reduces fatigue during extended use
  • Rear exhaust directs air away from the work area

Air Ratchet for Industrial Duty

The SPEEDAIRE 21AA63 is a pneumatic ratchet built for industrial duty with a 3/8 in square drive. It delivers 50 ft-lb of fastening torque at a free speed of 150 RPM. The tool requires an air supply between 50 and 90 psi and consumes 16 cfm during operation. Overall length measures 10 in and the tool weighs 2.6 lb.

Air Supply Requirements

Correct air pressure and volume are the single specification that decides whether this ratchet will perform as rated. The tool needs a minimum of 50 psi and a maximum of 90 psi with a continuous flow of 16 cfm. A hose size of at least 3/8 in is required to avoid starving the motor. If the compressor or hose cannot maintain these figures, torque output will drop.

Installation and Common Issues

Connect the 1/4 in NPT female inlet to a regulated air line using a 3/8 in or larger hose. The rear exhaust directs air away from the work area. The ball detent retainer holds sockets securely but can collect debris; clean it regularly to prevent socket release failures. Ensure the supply pressure stays at 90 psi under load or the ratchet will stall on tight fasteners.

Highlights

  • Delivers 50 ft-lb torque for demanding fastening jobs
  • Free speed of 150 RPM speeds through repetitive tasks
  • 10-inch overall length reaches into tight engine bays
  • Lightweight 2.6-lb design reduces fatigue during extended use
  • Rear exhaust directs air away from the work area

Specifications

BrandSPEEDAIRE

Questions about this item

What does the 50 ft‑lb fastening torque mean when I am tightening bolts?

It is the maximum tightening force the ratchet can deliver at 90 psi air pressure; above that the tool will stall rather than over‑tighten.

How does the 1/4 in NPT air inlet limit the airflow I can supply?

The 1/4 in NPT female thread caps practical flow at roughly 16 cfm, so a larger hose or fitting will not increase speed beyond that.

Will the 10 in overall length and 7/8 in side‑to‑center clearance fit inside a tight engine bay?

At 10 in long with a 7/8 in offset from the drive centre, it fits most standard 3/8 in drive spaces but may be tight near frame rails.

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