Chicago Pneumatic 1 In. Heavy Duty Air Impact Wrench with 6 In. Extended Anvil

Description

Commercial semi-truck dual wheels trap standard impact wrenches, forcing mechanics into slow teardowns with torque-multiplying hand wrenches. The Chicago Pneumatic 1 In. Heavy duty impact delivers 1920 ft-lbs of breakaway torque through a six-inch extended anvil. It clears deep rims fast, but handling this twenty-five-pound tool tires technician shoulders during prolonged fleet shifts.

The front clutch houses a pinless rocking dog impact mechanism machined from premium chromium-molybdenum alloy steel, transferring massive single-blow kinetic energy with low internal friction. An extended six-inch square drive anvil is induction hardened throughout to resist torsional flexing and fatigue cracking. Inside the motor wet-end, six phenolic composite rotor vanes sweep an induction-hardened ductile iron cylinder. Precision needle roller bearings support the case-hardened rotor shaft, preventing rotor drag against end plates during heavy breakaway spikes.

Hardware Performance Matrix

Commercial truck tire maintenance and heavy off-road equipment service demand extended anvil clearance and massive rotational breaking force. This one-inch pneumatic impact wrench spins stubborn fleet lug nuts and heavy suspension fasteners free without extension bars.

• 1920 ft-lbs maximum breakaway torque shatters rusted fleet wheel studs and heavy chassis hardware
• 6-inch extended square drive anvil accesses recessed lug nuts inside deep-dish commercial truck wheels
• Pinless closed-cage rocking dog clutch mechanism delivers heavy rotational blows without internal pin fatigue
• Ductile iron motor cylinder withstands line scale contamination from harsh commercial plant air lines
• Ergonomic D-handle with inside tease trigger provides firm two-handed leverage during horizontal wheel bolting
• Dual socket retention combines a friction ring and through-hole pin for absolute socket security
• 1/2-inch NPT air inlet port feeds high airflow volume to prevent pneumatic motor starvation

Dyno Realities Air Telemetry

Dynamometer testing measures dynamic air consumption of 41 CFM at 90 PSI dynamic under full load stall, jumping from 10 CFM at free-run. Free speed measures 5200 RPM, delivering 500 heavy blows per minute. Dynamic line pressure loss across 50 feet of 1/2-inch hose measures 7 PSI during stall cycles. Adiabatic expansion cools the handle exhaust to 27 degrees Fahrenheit, requiring dry air lines to prevent internal icing. Acoustic noise testing meters at 100 dBA under load.

Field Trade-Offs Application Filter

The six-inch anvil extension grants effortless wheel clearance, yet forward-heavy mass increases arm fatigue during horizontal flange bolting. Passenger car tire shops working on light aluminum wheels must not buy this tool; 1920 ft-lbs of brute rotational impact will snap wheel studs and crack passenger car rims.

• Inject eight drops of ISO VG 32 pneumatic tool oil into the air inlet before each shift.
• Pack synthetic impact grease into the front clutch mechanism every forty operating hours.
• Inspect the anvil friction ring and through-hole pin for wear before mounting sockets.

Commercial Warranty Package Inventory

Chicago Pneumatic backs this commercial truck impact wrench with a 1-Year limited commercial warranty covering drive motor and clutch component defects. The shipping package contains the extended-anvil pneumatic impact wrench, an auxiliary side handle, an air inlet fitting adapter, and an original manufacturer instruction guide.