Chicago Pneumatic Air Impact Wrenches
Thirty-seven pneumatic impact wrench models, 3/8 in. through 2-1/2 in. drive — tire-bay torque-limited guns, 1/2 in. workhorses, 3/4 and 1 in. truck and off-road tools, and #5 spline machines for mining, rail, and structural fasteners. Every model priced live and shipped from stock.
The short version
Pick the drive size first: it has to match your sockets and the fastener. 3/8 in. for brackets and small fasteners, 1/2 in. for wheels and general service, 3/4 in. for trucks and equipment, 1 in. and #5 spline for heavy wheels and structural bolts, and 1-1/2 in. and up for mining and rail. Torque-limited (TL) models cap output so wheel studs survive. Browse every model in the impact wrenches category, pair one with an air ratchet for the tight spots, or call 1-888-883-5144 and we will size one against your compressor.
Compact 3/8 in. and Light 1/2 in. Impact Wrenches
Sub-4 lb guns for brackets, small fasteners, and assembly work where a big impact would shear the bolt.
The bench and service-bay class
Everything here is light enough to run one-handed all day and tuned for fasteners up to about 5/8 in. The composite-housing models keep weight near 2.5 lb; the CP6300 industrial pistol adds a governed motor for production duty.
3/8 & 1/2 in. Drive
242-310 ft-lb · 1,200-1,400 BPM
The value pick — standard-duty gun in either drive size for general service work.
Torque / Drive size
1/2 in. Drive · Compact
509 ft-lb · 1,005-1,145 BPM
Serious torque out of a compact body; standard or 2 in. extended anvil.
Anvil
3/8 in. Drive
65 ft-lb · 1,400 BPM
Small-fastener gun for trim, brackets, and light assembly.
Drive size
3/8 & 1/2 in. Drive · Composite
285-289 ft-lb · 1,400 BPM
Composite housing drops the weight for all-day overhead and bench use.
Torque / Drive size
3/8 & 1/2 in. Drive · Composite
300-305 ft-lb · 1,700 BPM
Fast 1,700 BPM cycling for production fastener removal.
Torque / Drive size
3/8 in. Drive
50 ft-lb · 1,620 BPM
The classic CP small-drive gun — simple, rebuildable, and light.
Drive size
1/2 in. Drive
310 ft-lb · 1,020 BPM
A long-serving 1/2 in. design shops have rebuilt for decades.
Drive size
3/8 in. Drive · Industrial
150 ft-lb · 1,800 BPM
Industrial-line build quality for continuous assembly-line duty.
Drive size
1/2 in. Drive Impact Wrenches
The most-bought drive size in the line — wheels, suspension, driveline, and every 1/2 in. socket set in the shop.
The tire-bay and fleet workhorses
If the shop owns one impact gun, it is a 1/2 in. The CP7748TL is the tire-shop pick: full loosening power, but tightening capped at 103 ft-lb so studs are never over-torqued ahead of the torque wrench. The CP8222 family covers 3/8 to 3/4 in. drive from one value-priced platform.
1/2 in. Drive · Torque Limited
103 ft-lb tighten · 959 ft-lb loosen
The tire-shop gun — caps tightening so wheel studs survive, still breaks them loose.
Anvil
1/2 in. Drive
553 ft-lb · 1,350 BPM
Full-power version of the 7748 platform for fleet and heavy auto work.
Anvil
1/2 in. Drive
450 ft-lb · 1,320 BPM
The long-running CP standard — a rebuildable classic sold for decades.
Drive size
1/2 in. Drive · Compact
320 ft-lb · 1,100 BPM
Compact composite gun for all-day handling in a service bay.
Retainer
1/2 in. Drive · Composite
165 ft-lb · 1,600 BPM
Light composite gun where control matters more than brute torque.
Drive size
1/2 in. Drive · Heavy Duty
424 ft-lb · 959 ft-lb loosen
Short or long anvil, built for undercar and driveline fasteners.
Flex Mini air inlet
1/2 in. Drive · Industrial
502 ft-lb · 1,320 BPM
Industrial-line durability with pin or friction-ring socket retention.
Retainer
3/8 – 3/4 in. Drive · Value Line
295-922 ft-lb · 9 versions
One value platform covering three drive sizes and every retainer type.
9 configurations
Spec it on the product page — 9 buildable versions.
3/4 in. Drive Impact Wrenches
For lug nuts and fasteners a 1/2 in. gun will not break loose — medium-duty trucks, buses, ag, and construction equipment.
Truck, trailer, and off-road wheels
The 3/4 in. class trades speed for blow energy. The CP7763 and CP7769 run around 1,000 ft-lb of working torque with 6 in. extended-anvil options for dually and drop-center wheels; the industrial CP6060 and CP6728 families add governed motors and ATEX options for plant duty.
3/4 in. Drive
664 ft-lb · 960 BPM
The entry into the 3/4 in. class for occasional truck and equipment work.
Drive size
3/4 in. Drive · Classic
700 ft-lb · 900 BPM
The decades-old CP heavy classic; 6 in. extended anvil available.
Drive Extension
3/4 & 1 in. Drive
950-1,070 ft-lb · 900 BPM
The mainstream heavy-truck gun — four drive and anvil combinations.
Torque / Drive size
3/4 & 1 in. Drive
221-1,080 ft-lb · 1,200 BPM
Fast-cycling heavy gun; the low-torque 221 ft-lb version suits controlled tightening.
Drive size / Anvil
3/4 in. Drive
809 ft-lb · 1,110 ft-lb loosen
Call-to-quote model; we confirm availability with CP before you commit.
3/4 & 1 in. Drive · Industrial
900 ft-lb · 1,100 BPM
Industrial-line gun for plant and MRO duty cycles, hole or ring retainer.
Drive size / Retainer
3/8 – 1 in. Drive · ATEX Options
258-1,030 ft-lb · ATEX versions
One industrial family from 3/8 to 1 in., with ATEX-certified versions for classified areas.
Torque / Drive size
1 in. Drive & #5 Spline Impact Wrenches
Off-road trucks, mining equipment, rail, and structural steel — square drive or #5 spline where the socket spec demands it.
Heavy wheels, structural bolts, spline sockets
At this size the anvil choice matters as much as the torque figure: #5 spline anvils lock into spline sockets for mining and OTR wheel service, and 6 in. extensions reach through wheel openings. The CP0611 tops the class at 1,800 ft-lb working torque.
1 in. Drive
1,070-1,530 ft-lb
The working 1 in. gun for OTR and heavy-equipment wheel service.
Anvil
1 in. / #5 Spline
1,480 ft-lb · 500 BPM
Square or spline anvil, standard or 6 in. extended.
Drive size / Anvil
1 in. Drive · Torque Limited
325 ft-lb tighten · 1,920 ft-lb loosen
Torque-limited heavy gun — full loosening power, capped tightening for studs.
Drive size
1 in. Drive · 6 in. Anvil
1,250 ft-lb · 900 BPM
Extended-anvil specialist for dually and drop-center wheels.
Anvil
1 in. / #5 Spline
900-904 ft-lb · 1,080 BPM
The classic CP heavy industrial gun, still spec-listed on mining sites.
Torque / Drive size
1 in. Drive
1,330 ft-lb
Call-to-quote model; we confirm availability with CP before you commit.
1 in. Drive · Industrial
1,550 ft-lb · 650 BPM
Industrial D-handle or pistol for fixtured and repetitive heavy bolting.
Handle
3/4 & 1 in. · Industrial
952-1,070 ft-lb
Six buildable versions across drive size and anvil length.
Anvil / Torque
1 in. Drive · Industrial
2,070 ft-lb · 540 BPM
Maximum 1 in. torque for structural and mining fasteners.
Drive size
1 in. / #5 Spline · D-Handle
1,800 ft-lb · 1,020 BPM
The top of the 1 in. class — D-handle or pistol, square or spline.
Drive size / Handle
1-1/2 in. Drive & Larger Industrial Impact Wrenches
The biggest handheld impacts CP builds — up to 2-1/2 in. drive and 18,440 ft-lb of reverse torque.
Mining, rail, and heavy structural bolting
These are two-operator or fixture-supported machines for fasteners nothing else touches: mill liners, rail joints, mining truck wheels, and structural steel. The T-handle CP6130 and CP6240 run 5,240-9,150 ft-lb of working torque.
1-1/2 in. Drive · D-Handle
1,950 ft-lb · 850 BPM
D-handle control for repetitive heavy bolting at working height.
Handle
1-1/2 in. / #5 Spline
2,000 ft-lb · 3,600 ft-lb loosen
The mining and rail standard; square or spline output.
Drive size / Output drive type
1-1/2 in. Drive
4,060 ft-lb · 750 BPM
Steps up blow energy for liner bolts and large structural fasteners.
Configuration
1-1/2 & 2-1/2 in. · T-Handle
5,240-9,150 ft-lb working
The biggest guns on the page — two-hand T-handle machines for mill and mine.
Torque / Drive size
Air Impact Wrenches — Common Questions
What size air impact wrench do I need?
Match the drive to the fastener, not the other way around. 3/8 in. handles brackets and fasteners to about 5/8 in.; 1/2 in. covers car and light-truck wheels, suspension, and driveline; 3/4 in. is for medium trucks, buses, and equipment; 1 in. and #5 spline handle OTR wheels, mining, and structural steel; 1-1/2 in. and up is specialist mill and rail territory. Buying bigger than the job wastes air and risks snapped fasteners — a torque-limited 1/2 in. gun is the right answer for most tire work.
How much air does a CP impact wrench use?
A 1/2 in. gun typically wants a compressor delivering around 4-5 CFM at 90 psi for intermittent service work; 3/4 and 1 in. guns want considerably more, and the 1-1/2 in. class is a dedicated-compressor tool. The exact CFM figure is on every product page. Undersized air shows up as a gun that rattles but will not break fasteners loose — check air supply before blaming the tool. Call 1-888-883-5144 and we will check a model against the compressor you already own.
What does torque limited (TL) mean on the CP7748TL and CP7782TL?
A TL gun has full power in reverse for breaking fasteners loose, but caps its forward (tightening) torque — 103 ft-lb on the CP7748TL, 325 ft-lb on the CP7782TL. That protects wheel studs from over-torque; you snug the nut with the gun and finish to spec with a torque wrench. Tire shops buy TL guns to stop stud breakage and warranty claims.
What is a #5 spline drive and when do I need it?
A #5 spline anvil is a splined output that locks into matching spline sockets rather than a square drive. Mining, OTR tire service, and some rail and military specs call for spline drive because the engagement will not round off under repeated heavy impacts. If your sockets are spline, order the spline anvil version — the CP797, CP7782, CP6120, and CP0611 all offer one.
Impact wrench or air ratchet — which do I need?
An impact wrench delivers hammer blows for breakaway torque — seized bolts, wheel nuts, structural fasteners. An air ratchet is for speed and access, not power: low-profile head, controlled torque, fits where an impact will not. Most bays run both. If the fastener has a torque spec, finish with a torque wrench either way.
Are friction ring and pin retainer sockets interchangeable?
The gun holds the socket differently: a friction ring (hog ring) lets you swap sockets fast, a pin retainer locks the socket on until you remove the pin — the safer choice overhead and on vibrating equipment. Several CP models sell in both versions at the same price, so pick by how you work. Impact-rated sockets are in bolting accessories.
Does Chicago Pneumatic make a cordless impact wrench?
Yes — the 18 V CP8854 series, sold on our cordless and electric tools page. It is built for in-field bolting where dragging a hose is not practical. On shop air, the pneumatic guns on this page are lighter and cheaper for the same torque.
Where can I buy Chicago Pneumatic impact wrench parts?
We supply genuine CP service parts — vanes, hammers, anvils, springs, and tune-up kits — through our parts lookup, and impact sockets and accessories in CP accessories. Have the model number off the housing when you call 1-888-883-5144.
Need Help Picking an Impact Wrench?
We stock all 37 CP impact models in Denver and ship nationwide. Call for sizing help against your compressor, socket recommendations, or volume pricing.