Bosch GBH18V-28CN Rotary Hammer Pushes Cordless SDS-Plus Lineup Further
When it comes to cordless rotary hammers, Bosch has consistently delivered reliable performance and thoughtful design elements. A few years back, we got our hands on the cordless GBH18V-26 rotary hammer, which displayed competitive power and a relatively compact profile. But now, we’re turning our attention to Bosch’s latest offering; the GBH18V-28CN 1 1/8-inch SDS-Plus Rotary Hammer. I’m going to break down some of the key features to help you decide if it’s the right fit for you.
Bosch SDS-Plus Rotary Hammer Performance
- No-Load Speed: 0-950 RPM
- No-Load Blow Rate: 4,220 BPM
- Impact Energy: 2.6 ft-lbs (3.52 J)
- Max Bit Diameter: 1-1/8 in.
Drilling Power
The Bosch GBH18V-28CN rotary hammer sports a brushless motor with a top speed of 950 RPM, a blow rate of 4,220 BPM, and produces 2.6 ft-lbs of impact energy. With this tool, you get a max 1 1/8-inch drilling capacity in concrete, which is right on par for an SDS-Plus model in this size range.
One big upgrade on this model is the speed control panel. This allows you to switch between full power, 70% power with a soft start mode, and your programmable “Favorite” mode (more on that later). There’s also a battery-life meter that you can monitor while you work.
Here’s a quick look at the full drilling specs.
| Material | Max Bit Diameter |
|---|---|
| Concrete | 1-1/8 in. |
| Steel | 1/2 in. |
| Wood | 1-1/4 in. |
| Thin Wall Concrete Core Bit | 3 in. |
If you’re regularly drilling with bits on the upper end of the scale, you may want to step up to an SDS-Max model that can handle more heavy-duty applications. The GBH18V-28CN is perfectly capable in these situations, and it’s lighter than most SDS-Max options, but it might just take a little longer.
This rotary hammer features two drilling modes, a chipping mode, and a Vario-Lock that allows you to rotate your chisel bit 360 degrees.
Anti-Kickback Control
A key highlight of Bosch’s design is the Anti-KickBack Control feature. If the tool senses a bind-up or suddenly jerks about 90 degrees left or right, it automatically stops the bit rotation.
While it doesn’t match the raw power of an SDS-Max rotary hammer, it still packs enough force to give you a good jolt if it strikes rebar unexpectedly. KickBack Control helps to mitigate that risk and offers an extra layer of safety while you’re working.
Vibration Level
It’s hard to completely eliminate vibration with a rotary hammer, but I think Bosch took some good steps in the right direction. While Bosch doesn’t explicitly tell us all the internal specifics, there is an external vibration dampening zone built into the main grip.
During my testing, I noticed that there’s still some vibration traveling through the tool to your hands. However, it’s much better than most of the entry-level and mid-range models we’ve tested.
Dust Management
For years, Bosch has been on the forefront of dust collection technology; everything from integrated solutions to standalone models.
The Bosch GBG18V-28CN is compatible with the detachable GDE18V-16 HEPA dust extractor. This model automatically activates when you pull the trigger, saving you trips back and forth between your vac. It’s also perfect for overhead drilling applications because you don’t have to contend with a vacuum hose. For $139, that’s not a bad deal, especially since you won’t have to lug around a full-sized dust extractor.
Bosch SDS-Plus Rotary Hammer Design Notes
- Model: Bosch GBH18V-28CN
- Power Source: Bosch 18V battery
- Weight: 6.8 lbs (bare tool), 8.9 lbs (with kitted 8.0Ah battery)
- Tool Length: 14 in.
Size and Weight
The Bosch GBH18V-28CN weighs 6.8 pounds as a bare tool, and 8.9 pounds with the kitted 8.0Ah battery. It measures 14 inches from tip to tail and stands just over 8.5 inches tall. The grip sports a nice rubber overmold, and there’s a 360° auxiliary grip for added support during tough applications.
Bluetooth Connectivity
As we’ve seen with other Bosch tools, this rotary hammer features some smart tech that allow you to customize your drilling settings through the ToolBox App. To access this mode, just cycle through the control panel options until you get to “Favorite”. It does require a Bluetooth module, though (GCY42, sold separately).
Quick Model Comparison
If you’re on the fence about upgrading from the Bosch GBH18V-26CN, here’s a quick look at some of the key specs you need to know.
| GBH18V-26 (old) | GBH18V-28 (new) | |
|---|---|---|
| No-Load Speed | 890 RPM | 950 RPM |
| Blow Rate | 4,350 BPM | 4,220 BPM |
| Impact Energy | 1.9 ft-lbs | 2.6 ft-lbs |
| Max Bit Diameter | 1 in. | 1 1/8 in. |
| Bare Weight | 6.3 lbs | 6.75 lbs |
As you can see, the new model is a decent upgrade across the board, boasting a higher top speed and a 37% increase in impact energy. The differences might not be earth-shattering, but if you find that you need a bit more power and don’t want to make the jump to SDS-Max, the GBH18V-28CN is definitely worth it.
Additional Features
- Folding rafter hook
- LED work light
- Keyless chuck
- Compatible with all Bosch 18V batteries
Bosch SDS-Plus Rotary Hammer Price
This Bosch rotary hammer retails for $399 as a bare tool and $649 as a kit. The kit includes two Core18V 8.0Ah batteries, a charger, an auxiliary handle, a depth rod, and a hard-shell storage case. It also comes with a 5-year limited warranty.
The Bottom Line
Overall, the Bosch GBH18V-28CN brings notable improvements over its predecessor in terms of impact energy and drilling capacity. It offers a balanced combination of power, safety features like Anti-KickBack Control, and modern conveniences such as Bluetooth connectivity.
While it doesn’t hit as hard as SDS-Max models, it’s a compelling option for those looking to tackle those mid-range drilling and chipping tasks with a lighter, more compact tool. If you’re ready to upgrade within the SDS-Plus category, this model is well worth considering.
