Northrock Poker Vibrators - Electric |
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| 'High Frequency' |
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| Pro 1.5 | Pro 2.0 | Pro 3.0 |
Consolidation of concrete in forms is now made quicker and easier with Northrock concrete vibrators. With a wide range of poker vibrator heads, flexible shafts and power sources, Northrock has the right combination for concrete contractors, rental houses and equipment dealers looking for a rapid return on investment.
Northrock concrete vibrators offer just the right mid-frequency and force characteristics required to set material particles in motion fast, for rapid consolidation of homogenous mixes. At the same time, these optimum frequencies avoid the possibility of destroying important pressure-relief chains produced by small air bubbles. These relief chains are known to resist damage during freeze-thaw cycles in colder climates. They are not protected by competitive higher frequency systems which tend to destroy them. And Northrock concrete vibrators are designed to maintain these optimum frequencies regardless of slump, head size, or other load factors.
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A short 19mm head is available for slabs, tilt-up and other precast work. Coated heads from 25mm 50mm diameter are available to protect rebar and soft tips are available to protect expansive forms. |
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| Code | Description | |||
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| 76PRO-HD20 | Northrock Vibrating Head 20 mm |
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76PRO-HD25 |
Northrock Vibrating Head 25 mm | |||
| 76PRO-HD38 | Northrock Vibrating Head 38 mm | |||
| 76PRO-HD45 | Northrock Vibrating Head 45 mm | |||
| 76PRO-HD50 | Northrock Vibrating Head 50 mm | |||
| 76PRO-HD65 | Northrock Vibrating Head 65 mm | |||
| 76PRO-HD45S | Northrock Vibrating Slab Head 45 mm |
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Northrock Vibrator Systems offer a choice of standard heavy-duty shafts for better pokeability and light-duty pencil shafts for better flexibility. |
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| Code | Description | |||
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| 76PRO-SH-0.6M | Northrock Shaft 0.6 M (2ft) |
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| 76PRO-SH-1.5M | Northrock Shaft 1.5 M (5ft) | |||
| 76PRO-SH-2.1M | Northrock Shaft 2.1 M (7ft) | |||
| 76PRO-SH-3.0M | Northrock Shaft 3.0 M (10ft) | |||
| 76PRO-SH-4.2M | Northrock Shaft 4.2M (14ft) | |||
| 76PRO-SH-6.3M | Northrock Shaft 6.3 M (21ft) | |||
| 76PRO-SH-9.0M | Northrock Shaft 9.0 M (30ft) | |||
| For smaller size heads, pencils shafts are required | ||||
| 76PRO-SH-2.1P | Northrock Pencil Shaft 2.1M (7ft) | |||
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The Shafts can be joined to make any length using Shaft Joiners. |
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Head Dia & Length |
Centrifugal Force | Amplitude to side at tip | Radius of Influence | Capacity | |
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| (mm) | (N) | (mm) | (mm) | (m³/hr) | |
19 x 305 |
498 | 1.78 | 102 | 3.64 | |
| 25 x 330 | 820 | 1.91 | 127 | 5.46 | |
| 32 x 330 | 1,913 | 2.03 | 178 | 7.28 | |
| 38 x 356 | 3,380 | 2.29 | 356 | 10.92 | |
| 44 x 356 | 4,893 | 2.79 | 457 | 21.84 | |
| 51 x 356 | 6,450 | 3.30 | 559 | 31.85 |
