Makita Rotary Hammer Kit GRH07M1 1-1/8 Inch SDS-Plus Brushless (40V Max XGT 2.7 Ft-Lbs AVT D-Handle AFT 4.0Ah Battery Masonry Concrete Drilling)
Couldn't load pickup availability
Makita GRH07M1 40V Max XGT Brushless Cordless 1-1/8" AVT SDS-PLUS D-Handle Rotary Hammer Kit
The Makita GRH07M1 40V Max XGT Brushless Cordless 1-1/8" SDS-PLUS Rotary Hammer Kit delivers 2.7 ft-lbs (3.7 Joules) of impact energy and up to 5,000 BPM to bore deep structural anchor holes and execute heavy chipping through reinforced concrete. Engineered with an ergonomic D-handle orientation and Anti-Vibration Technology (AVT) featuring an internal counterbalance mechanism, this 3-mode rotary hammer dramatically suppresses tri-axial vibration during demanding overhead ceiling drilling and horizontal wall work. Outfitted with Active Feedback-Sensing Technology (AFT) anti-kickback control, constant speed motor regulation, an electric brake, Auto-Start Wireless System (AWS) Bluetooth dust extractor capability, a 40V Max 4.0Ah battery, and an XGT rapid charger, it equips mechanical plumbers, commercial electricians, and structural concrete trades with relentless, corded-equivalent demolition performance.
Best Used For:
- Overhead Mechanical & Electrical Drop Anchor Boring: Drilling 3/8-inch to 3/4-inch ceiling anchor holes for threaded rod hangers, cable trays, and plumbing pipe runs using the balanced D-handle design.
- Structural Concrete Rebar Doweling & Coring: Boring up to 1-1/8-inch solid bit anchor holes and 2-9/16-inch core bit utility penetrations through poured foundation walls and precast panels.
- Light Demolition & Surface Chipping: Removing excess concrete forms, chipping mortar beds, and scaling ceramic tile in hammer-only mode with reduced operator hand fatigue.
Key Performance & Safety Features
- High-Output Brushless Motor: Delivers 2.7 ft-lbs of impact energy with 0–980 RPM and 0–5,000 BPM for high-speed concrete penetration under continuous load.
- Anti-Vibration Technology (AVT): Active air-actuated counterbalance system and spring-loaded vibration-absorbing back handle reduce felt vibration to protect user joints.
- Active Feedback-Sensing Technology (AFT): Shuts off motor power instantly if the bit unexpectedly binds in reinforced concrete or strikes embedded steel rebar.
- Auto-Start Wireless System (AWS): Uses Bluetooth communication for automated wireless power-on/off synchronization with jobsite HEPA dust extractors (transmitter sold separately).
- Extreme Protection Technology (XPT): Protective internal rubber seals channel water and abrasive concrete slurry away from sensitive electronics and motor components.
- Integrated Electric Brake & Torque Limiter: Halts chuck rotation rapidly upon trigger release for fast bit repositioning while mechanical clutch prevents gear damage during sudden jams.
What's Included
- (1) Makita 40V Max XGT Brushless 1-1/8" SDS-PLUS Rotary Hammer (GRH07)
- (1) Makita 40V Max XGT 4.0Ah Lithium-Ion Battery (BL4040)
- (1) Makita 40V Max XGT Rapid Optimum Charger (DC40RA)
- (1) 360-Degree Auxiliary Side Handle Assembly with Depth Stop Rod
- (1) Hammer Bit Grease Tube
- (1) Tool Cleaning Towel
- (1) Heavy-Duty Makita Contractor Storage Bag
Technical Specifications
| Specification | Detail |
|---|---|
| Manufacturer Brand | Makita |
| Model Number / MPN | GRH07M1 |
| Battery Platform & Voltage | Makita 40V Max XGT Lithium-Ion (36V Nominal) |
| Motor Architecture | Makita Brushless Motor with Constant Speed Control |
| Impact Energy Rating | 2.7 ft-lbs (3.7 Joules / EPTA-Procedure 05/2009) |
| Blows Per Minute (BPM) | 0 – 5,000 BPM (Variable Speed Control) |
| No Load Rotational Speed (RPM) | 0 – 980 RPM (Variable Speed Dial) |
| Chuck & Shank Drive System | SDS-PLUS (Slotted Drive System) |
| Operating Modes | 3 Modes: Rotary Drilling, Hammering with Rotation, Hammer Only (Chipping) |
| Max Solid Bit Drilling Capacity (Concrete) | 1.125 in (1-1/8 in / 28.6 mm) |
| Optimum Drilling Range (Concrete) | 0.1875 in to 0.75 in (3/16 in to 3/4 in / 4.76 mm to 19.05 mm) |
| Max Core Bit Drilling Capacity (Masonry) | 2.5625 in (2-9/16 in / 65 mm) |
| Handle Architecture | Ergonomic In-Line D-Handle with Rubberized Overmold |
| Overall Tool Length | 18.625 in (18-5/8 in / 473 mm) |
| Total Operating Weight (with 4.0Ah Battery) | 10.00 lbs (4.54 kg) |
| Universal Product Code (UPC) | 088381754729 |
| Manufacturer Warranty | 3-Year Limited Warranty (Tool, Battery & Charger) |
Pro-Tip: When boring overhead anchor holes in precast hollow-core concrete slabs, apply light, consistent forward feed; letting the 2.7 ft-lbs percussion mechanism strike naturally prevents bit binding and activates the AVT counterbalance for virtually vibration-free drilling.