The Denver DHFR series of pneumatic Roller Vibrators have been the traditional go-to vibrator in the precast industry for decades. Their high-force and high-frequency output makes them well suited for a wide range of industries. Applications such as wet cast concrete, dry cast concrete, refractory placement, vibratory screeds, moving material in bins and hoppers and the unloading of railcars all benefit from the use of roller style vibrators. When used with the weld-on cradle lug bracket, they are the ideal wall vibrator; especially walls that my contain large aggregate or are greater than 12 inches thick.
The DHFR roller vibrators are light enough to be portable, easy to handle and quickly installed. In operation, air pressure activates the dual rollers and creates multiple vibrations during each cycle. Motorless and bearingless with only a few moving parts, they are virtually maintenance-free. The DHFR vibrator's bulletproof construction makes them well suited for a long life of heavy duty service. And, with the availability of a variety of brackets and accessories, the Denver dual roller series is one of the most versatile vibrators on the market.
*Vibrator and bracket sold separately.
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.
Roller Vibrator Performance Data
| 30 PSI | 60 PSI | 90 PSI | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Vibrator Model | VIbrator Weight (Lbs) | Minimum Hose I.D. | Vibrations Per Minute | Air Consumption (CFM) | Force Output (Lbs) | Vibrations Per Minute | Air Consumption (CFM) | Force Output (Lbs) | Vibrations Per Minute | Air Consumption (CFM) | Force Output (Lbs) |
| DHFR 4400 | 16 | 1/2" | 6,000 | 39 | 960 | 9,000 | 60 | 2.100 | 11,000 | 68 | 3,200 |
| DHFR 5500 | 37 | 3/4" | 5,000 | 30 | 1,700 | 7,000 | 49 | 3,500 | 9,000 | 58 | 5,700 |
| DHFR 6500 | 40 | 3/4" | 3,500 | 32 | 1,800 | 5,000 | 44 | 3,700 | 7,000 | 52 | 7,100 |
| DHFR 7800 | 38 | 3/4" | 2.000 | 35 | 1,600 | 3,000 | 46 | 4,200 | 5,500 | 51 | 8,100 |
See also Sizing and Using Form Vibrators and Turbine Form Vibrators