Bosch GBH2-28L Bulldog Xtreme Max SDS-Plus Rotary Hammer
- Maximum Chuck Size: 13 Millimeters
- Drill Type: Hammer Drill
- Power Source: Corded Electric
- Torque: 29 in-lb
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A corded 8.5 amp drill with real low end torque for repeated heavy drilling, at the cost of the cord and the added weight.
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ASIN: B01N4RSKSHModel: GBH2-28LCategory: Drills
Overview
The Bosch GBH2-28L is a corded electric drill drawing 8.5 amps at 120 volts and spinning up to 1,230 RPM. At 2.9 kilograms it sits at the heavier end of corded drills, built for repeated use rather than light household jobs.
An 8.5 amp motor is a substantial draw for a drill, and paired with a top speed of 1,230 RPM it points toward a tool built for boring larger holes and driving through dense material rather than fast, light drilling. The corded design trades portability for continuous power, so runtime is not a concern the way it is with battery tools. No chuck size or torque setting count is given in the listing, so match those details against your bit sizes before buying.
- 8.5 amp corded motor
- 120 volt power source
- 1,230 RPM top speed
- 2.9 kilogram (6.4 lb) tool weight
Who it's for
Fits contractors and heavy DIYers who need sustained corded power for drilling through masonry, wood, or metal on a job site. Less suited to occasional users who would find a lighter cordless drill easier to maneuver.
Pros and cons
- 8.5 amp motor for sustained heavy drilling
- Corded design means no battery runtime limits
- Geared for torque with a 1,230 RPM top speed
- Corded, so working radius is limited by the cable
- At 2.9 kilograms it is heavier than typical cordless drills
- No chuck size listed to confirm bit compatibility
Performance notes
The 8.5 amp draw at 120 volts gives the motor enough current to hold speed under load, which matters more for boring large diameter holes than for driving small screws. A 1,230 RPM top speed is on the slower side for a drill, consistent with a tool geared for torque over speed.
Specifications
| Brand | BOSCH |
|---|---|
| Model | GBH2-28L |
| Dimensions & fit | |
| Maximum Chuck Size | 13 Millimeters |
| Item Weight | 6.39 poundshigher than 71% of 238 drills |
| Item Dimensions L X W X H | 17.4 × 3.5 × 6 inches |
| Capacity & performance | |
| Maximum Rotational Speed | 1230 rpmlower than 67% of 178 drills |
| Drilling Capacity Metal | 0.5 inches |
| Number Of Speeds | 3 |
| Power & efficiency | |
| Power Source | Corded Electric |
| Maximum Power | 850 wattshigher than 65% of 155 drills |
| Amperage | 8.5 ampshigher than 66% of 166 drills |
| Voltage | 120 voltshigher than 85% of 255 drills |
| Construction & materials | |
| Material Type | Plastic |
| Color | Black |
| Included components | |
| Unit Count | 1 |
| Included Components | -- Other -- |
| Warranty & support | |
| Manufacturer Warranty Description | Limited 1 Year |
| Other details | |
| Drill Type | Hammer Drill |
| Torque | 29 in-lblower than 86% of 154 drills |
| Maximum Torque | 29 in-lblower than 88% of 137 drills |
| Is Electric | Yes |
| Item Type Name | Corded Rotary Hammers |
| Additional Features | Variable Speed |
Closest rivals on specs
DeWALT DCD803B Atomic 20V Max 5-in-1 Multi-Head Drill Driver- Item Weight 6.39 vs 5.5 pounds (+16%)
WORKPRO W125173A SDS-Plus Rotary Hammer Drill 7.5 Amp- Amperage 8.5 vs 7.5 amps (+13%)
- Item Weight 6.39 vs 7.72 pounds (-17%)
SKIL DL181901 Corded Drill 7.5 Amp- Maximum Rotational Speed 1230 vs 950 rpm (+29%)
- Amperage 8.5 vs 7.5 amps (+13%)
- Item Weight 6.39 vs 5.53 pounds (+16%)
Frequently asked questions
Is the Bosch GBH2-28L corded or cordless?
It is a corded electric drill running on 120 volts, so there is no battery to charge or replace.
How fast does it spin?
Its top speed is 1,230 RPM, geared toward torque for boring and driving rather than high speed drilling.
How much does the tool weigh?
It weighs about 2.9 kilograms, roughly 6.4 pounds, noticeably heavier than a compact cordless drill.