Backpack concrete vibrators are designed for general construction projects. Although a Denver Concrete backpack vibrator is capable for powering a flex shaft in excess of 20 feet in length, they are typically used with shafts in the 6 foot to 10 foot range. Common applications include footings and stem walls, decks, driveways, and stairways. The powerful Honda™ engine provides consistent performance even when driving our largest (3.0″ diameter) head in stiff concrete.
Features:
- Lightweight fiberglass frame with multi-point adjustment straps for maximum comfort.
- Vented padding maximizes airflow to help keep the operator cool.
- Extremely reliable Honda 4-cycle gas engine.
- All metal parts used on high-stress transmission components.
- Throttle actuated kill switch allows the engine to be shut off without removing the backpack.
- Flex shaft quick disconnect system comes as standard equipment.
- Convenient water bottle holder on the waist strap.
- A hinged mount allows the engine to pivot for added comfort.
- Low oil shut off system to prevent engine damage.
- Weighs only 29 pounds.
Learn how to properly use internal concrete vibrators here. (en español)
Also see Electric Motor Flex Shaft Vibrators and Flex-Power 5.
All Denver Concrete Vibrators come with a limited lifetime warranty against manufacturing defects.
Need help selecting the right vibrator? Please contact us by phone at 800.392.6703 or by email and let us help you choose the correct vibrator for your application.
Flex Shaft Head Performance Data
| Model | Head Diameter | Head Length | Head Weight | Diameter of Effect* | Vibrations per Minute | Centrifugal Force | 1/2 Wave Amplitude |
|---|---|---|---|---|---|---|---|
| D.81-6 | 13/16" | 6" | 1 lbs | 3" to 7" | 12,000 | 61 lbs | 0.024" |
| D.81 | 13/16" | 11" | 1 lbs | 5" to 11" | 12,000 | 141 lbs | 0.03" |
| D1.25 | 1.25" | 8" | 2 lbs | 10" to 15" | 12,000 | 178 lbs | 0.035" |
| D1.5 | 1.5" | 13" | 5 lbs | 12" to 18" | 10,000 | 435 lbs | 0.045" |
| D1.75 | 1.75" | 15" | 7 lbs | 14" to 21" | 10,000 | 830 lbs | 0.05" |
| D2.0 | 2.0" | 10" | 6 lbs | 16" to 24" | 10,000 | 900 lbs | 0.055" |
| D2.5 | 2.5" | 10" | 9 lbs | 20" to 30" | 10,000 | 1,260 lbs | 0.055" |
| D2.75 Spud | 2.75" | 6" | 7 lbs | 14" to 21" | 12,000 | 818 lbs | 0.035" |
| D3.0 | 3.0" | 12" | 15 lbs | 24" to 36" | 10,000 | 1,676 lbs | 0.039" |
*The diameter of effect varies with wetness of the pour. The lower number is based upon a 2 to 4 inch slump.
Backpack Concrete Vibrator Parts List.