DAR MICRO ROLLER

The DAR Roller Vibrator offers an extremely high force to weight ratio.
It is designed as a robust vibrator suitable for use under the most difficult conditions.
Housing is machined from an extruded aluminum section. Inside a precision iron roller rotates on high tensile steel races. It is retained by two high impact special bronze end plates. A filter-regulator-lubricator is to be used at all times with this vibrator.

PERFORMANCE          
MODEL  FREQUENCY FORCE OUTPUT AIR CONSUMPTION
  30 PSI 60 PSI 90 PSI 30 PSI 60 PSI 90 PSI 30 PSI 60 PSI 90 PSI
vpm vpm vpm lbs lbs lbs cfm cfm cfm
DAR-2
36000
38000
38000
500
760
920
2.5
5
7
DAR-3
27000
32000
32000
612
920
1360
3.5
7
10
DAR-4
18000
22000
25000
530
1030
1500
4.2
9
13
DAR-5
9500
15000
16000
480
1120
1620
4.6
9.5
14
DAR-6
7800
10000
12000
980
1500
2300
6
11
16
DAR-7
8000
9800
11000
1300
2100
2700
6.4
12
17

CR PARTS DWG

TECHNICAL DATA
Unbalance Weight: 2 Ground Steel Rollers (5500-6500)
Lubrication: Recommended (if the environment is clean).
Air Supply: 30 to 90 PSI (2 to 6 bar)
Air Type: Clean; usage of filter (40µm)
will extend life
Body: Cast Iron
End Cap : Ground Steel Plates
Ambient Temperature: 400°F (200°C)
Noise Level Range: 100 dBA
Air nipple hose size 5/8"
Air nipple thread size M-30

dar cross section

1. Extruded aluminum alloy body
2. Hardened ground steel races
3. Cast iron roller
4. Special bronze endplates
5. Oiler grooves
6. Impurities collection grooves
7. Air inlet
8. Air exhaust
9. Base mounting holes 

DIMENSIONS       
MODEL
A
B
C
D
E
F
G/H
WEIGHT
 
inches
inches
inches
inches
inches
inches
inches
Lbs
DAR-2
1.97
1.18
3.38
2.68
0.47
0.27
1/8
0.82
DAR-3
2.56
1.42
4.45
3.54
0.63
0.35
1/4
1.68
DAR-4
3.15
1.57
5.04
4
0.63
0.43
1/4
2.8
DAR-5
3.94
2.05
6.3
5.12
0.79
0.51
3/8
5.4
DAR-6
4.72
2.44
7.64
6
0.94
0.67
3/8
10.35
DAR-7
4.72
3.03
7.64
6
0.94
0.67
3/8
12.55
TECHNICAL DATA
Unbalance Weight: Cast iron roller
Lubrication: Necessary (Oil ISO VG5 = 5cSt/40°C)
Air Supply: 30 to 90 PSI (2 to 6 bar)
Air Type: Clean, use of filter (40µm) recommended
Body: Aluminum, stove-enamelled orange
End Cap : Bronze, threaded (Left and right hand)
Ambient Temperature: 400°F(200°C)
Noise Level Range: 75 to 100 dBA with muffler

Additional technical information

The vibrator housing is machined from an aluminum alloy profile.
The housing has two mounting holes.

The air inlet port and the exhaust port are tapped with standard pipe thread.
The pipe thread is BSP (British Standard Pipe) but will accept US NPT( National Pipe Thread) .

For optimal performance, mufflers of sintered bronze should be used to improve exhausting.

The DAR indicates the heavy roller series and the number (2 to 7) is a running number.

The maximum ambient operating temperature is 200°C (400°F).

The noise level range is 75 to 100 dBA with silencers.

Installation / Operation

The vibrator should be placed so that its rotative axle is horizontal in order to avoid frictionbetween roller and end plates that would prematurely wear out the end plates.

The DAR-vibrator can be operated intermittently without losing efficiency or causing other difficulties since the vibration stops immediately after air pressure is cut.
Therefore, it is very useful in the concrete industry to calculate accurate compaction times.

Lubrication is required. One drop per five minutes is sufficient. In addition, only filtered, clean air (40 µm filter is sufficient) should be used.
Dirt will cause the roller to jump and dents or cracks in the steel races will result.

Please make sure that hydraulic oil ISO VG5 with 5 cSt/40°C is used. Any other viscosity may cause the unit to clog or reduce the vibrating frequency and power.