Bosch RH540M
Score: 92/100
Milwaukee M18 Fuel
Score: 88/100Rankings
The Bosch RH540M is a high-performance 12-amp corded SDS-Max rotary hammer designed for heavy-duty drilling and chiseling in concrete and masonry. It delivers class-leading 6.1 ft-lbs of impact energy, making it ideal for professional contractors requiring maximum power and durability in reinforced concrete applications. Best suited for professional contractors and demolition crews handling medium-to-heavy concrete work.
The Milwaukee 2915-20 is a high-performance cordless rotary hammer delivering class-leading 3.6 ft-lbs of impact energy with an AVS anti-vibration system. Its main trade-off is the heavy weight and the necessity of purchasing premium batteries separately to achieve peak output. It is best suited for professional contractors needing cordless versatility for medium-duty concrete work up to 1-1/8 inch bits.
| Attribute | | |
|---|---|---|
6.1 joulesbest | 3.6 joules | |
| ↓ lower better | 6.89 kilogramsbest | 8.65 kilograms |
340 rpm | 800 rpmbest | |
2,900 bpm | 4,600 bpmbest | |
120 voltsbest | 18 volts | |
12 wattsbest | — |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Performance(3) | ||
Impact Energy (joules) | 6.1 joules | 3.6 joules |
No-Load Speed (rpm) | 340 rpm | 800 rpm |
Impact Rate (BPM) (bpm) | 2900 bpm | 4600 bpm |
Design & Handling(3) | ||
Tool Weight (kilograms) | 6.89 kilograms | 8.65 kilograms |
Chuck Type | SDS-Max | SDS-Plus |
Handle Type | 360° Rotatable | In-line D-Handle |
Power & Battery(3) | ||
Voltage (volts) | 120 volts | 18 volts |
Power Source | Corded | Cordless |
Motor Power (watts) | 12.0 watts | Unknown watts |
Features & Controls(3) | ||
Operating Modes | 2 | 3 |
Trigger Type | Variable Speed | Variable |
Safety Features | Adjustable Clutch | AUTOSTOP, REDLINK PLUS |
General & Warranty(2) | ||
Warranty Period | 1 Year | 5 Years |
Included Accessories | Auxiliary handle, Carrying case | Depth rod, side handle |
Products in the top-left offer the best value (high score, low price).
Professional reviewers from Pro Tool Reviews, ToolGuyd, and Concrete Construction praise the RH540M for its raw power and reliability. Experts highlight its 6.1 ft-lbs impact energy as superior to competitors like Hilti and Makita, resulting in significantly faster drilling speeds. The service-friendly design and robust 12-amp motor are also commended, though reviewers note it is not the lightest option available.
Everyday users and professionals on forums and retailer sites generally rate the tool highly for its power and durability. Common praise focuses on its ability to drill through tough, rebarred concrete and the protective benefits of its clutch system. Recurring complaints center on the tool's weight causing fatigue, the absence of dust collection, and the short power cord.
Professional reviewers and editors characterize the Milwaukee 2915-20 as the next generation of cordless rotary hammers, praising its class-leading 3.6 ft-lbs impact energy and speed.
Everyday users and implied feedback indicate strong satisfaction with the tool's power and speed for concrete applications.
“Drills 1-9/16" holes in rebarred concrete like butter-6.1 ft-lbs is no joke”
“Variable speed prevents bit binding; clutch saved my wrist twice.”
“3 years daily abuse, still hammers at 2,900 BPM.”
