Bosch
Bosch GBH18V-26D 18V EC Brushless 1 In. SDS-plus Bulldog Rotary Hammer
$219
Released 2019-04
Best Rotary Hammers · head-to-head
Bosch GBH18V-26D 18V EC Brushless 1 In. SDS-plus Bulldog Rotary Hammer vs DeWalt DCH172B ATOMIC 20V MAX 5/8 In. Brushless SDS-Plus Rotary Hammer (Bare Tool)
A sourced, side-by-side comparison. Bosch GBH18V-26D 18V EC Brushless 1 In. SDS-plus Bulldog Rotary Hammer is cheaper at $219. Every spec and price links to its source.
Which is better: the Bosch GBH18V-26D 18V EC Brushless 1 In. SDS-plus Bulldog Rotary Hammer or DeWalt DCH172B ATOMIC 20V MAX 5/8 In. Brushless SDS-Plus Rotary Hammer (Bare Tool)?
The DeWalt DCH172B ATOMIC 20V MAX 5/8 In. Brushless SDS-Plus Rotary Hammer (Bare Tool) wins 1 of the 1 specs we compare head to head; the other wins 0.
See Bosch GBH18V-26D 18V EC Brushless 1 In. SDS-plus Bulldog Rotary Hammer on Amazon See DeWalt DCH172B ATOMIC 20V MAX 5/8 In. Brushless SDS-Plus Rotary Hammer (Bare Tool) on Amazon
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Bosch GBH18V-26D 18V EC Brushless 1 In. SDS-plus Bulldog Rotary Hammer |  DeWalt DCH172B ATOMIC 20V MAX 5/8 In. Brushless SDS-Plus Rotary Hammer (Bare Tool) |
|---|---|---|
| US price | $219 | $219 |
| Brand | Bosch | DeWalt |
| Released | 2019-04 | — |
| Chuck type | SDS-plus | SDS-plus |
| Impact energy joules | 2.6 | 1.4 |
| Max drill diameter (mm) | 25 | 16 |
| Voltage | 18V | 20V MAX (18V nominal) |
| Blows per minute | 4350 | 4980 |
| No load (rpm) | 890 | 1060 |
| Vibration control | KickBack Control (electronic bind-up/kickback shutoff); no dedicated anti-vibration handle system documented | SHOCKS Active Vibration Control (rated 8.8 m/s²) |
| Operating modes | 3-mode: rotation only, hammer-drill, hammer-only | — |
| Weight (lb) | 5.8 | 4.4 |
Sources — Bosch GBH18V-26D 18V EC Brushless 1 In. SDS-plus Bulldog Rotary Hammer: pressroom.boschtools.com (verified 2026-08-01). DeWalt DCH172B ATOMIC 20V MAX 5/8 In. Brushless SDS-Plus Rotary Hammer (Bare Tool): dewalt.com (verified 2026-08-01).
What's the difference between the Bosch GBH18V-26D 18V EC Brushless 1 In. SDS-plus Bulldog Rotary Hammer and DeWalt DCH172B ATOMIC 20V MAX 5/8 In. Brushless SDS-Plus Rotary Hammer (Bare Tool)?
Where the two actually differ on the specs we track (7 of 9). Matching specs are omitted.
- Impact energy joules: Bosch GBH18V-26D 18V EC Brushless 1 In. SDS-plus Bulldog Rotary Hammer 2.6 vs DeWalt DCH172B ATOMIC 20V MAX 5/8 In. Brushless SDS-Plus Rotary Hammer (Bare Tool) 1.4
- Max drill diameter (mm): Bosch GBH18V-26D 18V EC Brushless 1 In. SDS-plus Bulldog Rotary Hammer 25 vs DeWalt DCH172B ATOMIC 20V MAX 5/8 In. Brushless SDS-Plus Rotary Hammer (Bare Tool) 16
- Voltage: Bosch GBH18V-26D 18V EC Brushless 1 In. SDS-plus Bulldog Rotary Hammer 18V vs DeWalt DCH172B ATOMIC 20V MAX 5/8 In. Brushless SDS-Plus Rotary Hammer (Bare Tool) 20V MAX (18V nominal)
- Blows per minute: Bosch GBH18V-26D 18V EC Brushless 1 In. SDS-plus Bulldog Rotary Hammer 4350 vs DeWalt DCH172B ATOMIC 20V MAX 5/8 In. Brushless SDS-Plus Rotary Hammer (Bare Tool) 4980
- No load (rpm): Bosch GBH18V-26D 18V EC Brushless 1 In. SDS-plus Bulldog Rotary Hammer 890 vs DeWalt DCH172B ATOMIC 20V MAX 5/8 In. Brushless SDS-Plus Rotary Hammer (Bare Tool) 1060
- Vibration control: Bosch GBH18V-26D 18V EC Brushless 1 In. SDS-plus Bulldog Rotary Hammer KickBack Control (electronic bind-up/kickback shutoff); no dedicated anti-vibration handle system documented vs DeWalt DCH172B ATOMIC 20V MAX 5/8 In. Brushless SDS-Plus Rotary Hammer (Bare Tool) SHOCKS Active Vibration Control (rated 8.8 m/s²)
- Weight (lb): Bosch GBH18V-26D 18V EC Brushless 1 In. SDS-plus Bulldog Rotary Hammer 5.8 vs DeWalt DCH172B ATOMIC 20V MAX 5/8 In. Brushless SDS-Plus Rotary Hammer (Bare Tool) 4.4