Description
Commercial mechanical contractors waste time hauling separate drills when they need to drill masonry anchors and smooth metal brackets. The DEWALT 1-1/8in Keyless Rotary Hammer switches from concrete hammering to metal drilling using swappable chucks. You swap chucks by hand. This light hammer handles anchor holes, but it lacks the impact mass for heavy slab demolition.
Glass-filled nylon forms the ergonomic motor housing, reinforced with textured rubber overmold to grip securely in greasy hands. A 9.0-amp universal motor connects to standard 120V 1-Phase power, driving an internal striker to deliver 5350 blows per minute and 3.0 Joules of impact energy at 1450 RPM. Quick-change collars let technicians swap between SDS-Plus and three-jaw chucks. The bare tool weighs 6.8 lbs, measuring 14.5 inches long for overhead drilling.
Key Features of DEWALT 1-1/8in
Electricians and plumbers buy DEWALT 1-1/8in keyless rotary hammers to drill conduit anchor holes and steel brackets. The quick-change chuck system lets you jump from SDS-Plus bits to standard twist drills in seconds.
- High-output 9.0-amp motor delivers 3.0 Joules of impact energy to drill cured concrete.
- Quick-change keyless chuck swaps from SDS-Plus to a 1/2-Inch three-jaw chuck without tools.
- Wide 1-1/8-Inch concrete drilling capacity handles pipe hangers, drop-in anchors, and rebar ties.
- Active vibration control cuts felt vibration in the rear handle to reduce worker joint fatigue.
- Mechanical slip clutch breaks rotational drive during bit binds to prevent operator wrist kickback.
- Reversing trigger switch helps back stuck drill bits out of deep concrete block walls.
- Lightweight 6.8-lb chassis balances overhead to reduce neck strain during ceiling anchor work.
Striker Impact Bench Load Metrics
Bench testing proves the pneumatic striker delivers 3.0 Joules of impact energy at 5350 blows per minute under manual downfeed into 4000 PSI concrete. Drilling a 5/8-Inch solid carbide bit through 4-Inch concrete slabs takes an average of 18 seconds per hole. The mechanical slip clutch breaks traction at 16 foot-pounds of torque, protecting operator wrists when bits strike wire mesh. Internal striker cylinder temperatures remain below 122 degrees Fahrenheit across 30-Minutes of continuous anchor drilling on test stands.
Jobsite Handling Operational Field Limits
The 360-Degree side handle and contoured pistol grip give you solid two-hand control during ceiling anchor drilling. Skip this light tool for heavy concrete slab demolition or core drilling past 2-1/2-Inch diameter. The 3.0 Joule striker lacks the impact mass to chip thick foundation footings or drive heavy bushing tools. Grease the SDS-Plus bit shanks before inserting them into the chuck.
- Apply a dab of high-pressure grease onto SDS-Plus bit shanks before every work shift.
- Wipe concrete dust off the front rubber nose boot to prevent grit ingress into the chuck.
- Inspect carbon brushes every 50 hours and replace worn brushes before commutator damage occurs.
Manufacturer Warranty Standard Kit Manifest
DEWALT backs the 1-1/8-inch keyless rotary hammer with a 3-Year limited warranty and a 1-Year free service contract. The heavy kit box delivers the rotary hammer, a quick-change SDS-Plus chuck, a 1/2-Inch keyless chuck, a side handle, a depth rod, and an operator manual.
