Northrock Pro Series Electric Vibrators
Heavy-Duty. Hard Hitting. Made in the USA.
- Built to take a beating: High-strength cast aluminum housing dissipates potentially damaging heat
- Rugged Protection: Shock-absorbing frame protects the motor and doubles as a convenient carrying handle.
- Job Site Ready: Equipped with watertight, strain-relief power cords to handle abuse.
- Easy Maintenance: Features easy access to oversized brushes for quick service
- All Styles: Available in every major style to fit your existing shafts and heads.
Model Specifications
| Model | HP | Amps | Weight | Max Head Size | Application |
|---|---|---|---|---|---|
| PRO 1.5+ | 1.5 HP | 13 Amp | 17 lbs | 1-3/4" | Small jobs, tight rebar, walls. |
| PRO 2+ | 2 HP | 15 Amp | 19 lbs | 2-1/2" | The industry workhorse. Most versatile option. |
| PRO 3+ | 3 HP | 19 Amp | 25 lbs | 2-1/2" | Continuous duty, low-slump concrete. |
Choose Your Motor Size
Northrock System Builder
Select your requirements to find the perfect Northrock Motor.
How to Select Your NorthRock System
Step 1: Determine Head Diameter
First, determine the diameter of the head based on the radius of influence needed, as listed in the chart below.
| Head Dia. | Radius of Influence |
|---|---|
| 3/4" (19mm) | 4 inches (102mm) |
| 1" (25mm) | 5 inches (127mm) |
| 1-1/4" (32mm) | 7 inches (178mm) |
| 1-1/2" (38mm) | 14 inches (356mm) |
| 1-3/4" (44mm) | 18 inches (457mm) |
Step 2: Determine Shaft Length
Determine the length of the shaft needed to reach the bottom of the form.
- Note: Standard lengths are 2' to 21'
- Shafts can be connected to reach up to 60'
Vibrator Head Performance
Match the head size to your specific job requirements.
| Head Dia. | Radius of Influence | Centrifugal Force | Capacity (Y3/hr) |
|---|---|---|---|
| 3/4" | 4" | 112 lbs | 4 |
| 1" | 5" | 183 lbs | 6 |
| 1-1/4" | 7" | 430 lbs | 8 |
| 1-1/2" | 14" | 760 lbs | 12 |
| 1-3/4" | 18" | 1,100 lbs | 24 |
| 2" | 22" | 1,450 lbs | 35 |
| 2-1/2" | 28" | 1,525 lbs | 37 |
Why Northrock Electric Vibrators
The industry standard for internal concrete consolidation.
One Source. All Styles.
Don't get locked into one supplier. Northrock motors are built in every major style, so the one you order matches the shafts and heads already in your fleet. One vendor, one call, simple fleet management.
Cool Running
Built to last. We use high-strength cast aluminum housings which dissipate heat significantly better than the plastic housings used by competitors.
Job Site Ready
Tougher than the environment. Our units feature a water-tight strain relief system that prevents accidental cord pull-outs during heavy use.
Easy Maintenance
Service in the field, not the shop. We use oversized brushes with easy-access caps, allowing for quick inspection and replacement without disassembling the motor.
System Flexibility
One motor, endless options. Our power units can drive flexible shafts ranging from 2’ to 21’ and vibrator heads from 3/4” to 2-1/2”.
Made in the USA
Quality you can trust. Every Northrock electric vibrator is designed and manufactured in our Bohemia, New York facility.
Parts & Compatibility
Flexible Shaft Options
- Standard Duty Shafts: Stiffer construction for better poking control.
- Pencil Shafts: More flexible, designed for tight areas (used only with 3/4" and 1-1/4" heads).
- Lengths: Available in 1’ to 30’ lengths. Lengths up to 60’ are available via a simple shaft connector.
One Source. All Styles.
Northrock builds motors, shafts and heads to match the equipment you already own. Order in the style that fits your fleet:
- Oztec Style (fits 1.2, 1.8, 2.4, 3.2 HP systems)
- Wacker Style (fits M1000, M2000, M3000 systems)
- Wyco Style (fits CK-8900 and CK-9500 systems)
- Stow Style (fits 314 and 382V systems)
- Multiquip / Mikasa Style
- Stone, Viber and Master Styles
- Northrock OEM
Which Pro Series motor is right for my job?
The correct motor depends on the diameter of the vibrator head you need for the pour.
-
Pro 1.5: Ideal for smaller jobs. It powers heads up to 1-1/2 inches in diameter.
-
Pro 2+: Our most versatile motor. It drives heads up to 2-1/2 inches
-
Pro 3+: The heavy-duty workhorse. Designed for the most demanding applications, including low-slump concrete and continuous use at precast plants
Will Northrock parts fit my existing equipment?
Yes. Northrock builds motors, shafts and heads in every major style: Oztec, Wacker, Wyco, Stow, Stone, Multiquip/Mikasa, Viber and Master. Order the style that matches your fleet and the parts fit like OEM. Parts are not cross-compatible between styles, so an Oztec-style shaft needs an Oztec-style motor. Not sure which style you have? Use the finder on our homepage or call us.
How durable are the motor housings?
We build them for the harsh reality of a job site. Northrock electric motors are protected by a high-strength cast aluminum housing that acts as a heat sink to dissipate potentially damaging heat. Additionally, a rugged shock-absorbing frame wraps around the housing to protect the motor and switches from drops and impact.
Do the vibrator heads require maintenance?
No. Northrock vibrator heads are factory sealed and require no maintenance. The internal high-performance eccentrics and precision ball bearings are permanently sealed in a synthetic oil bath
What is the maximum shaft length available?
We stock standard flexible shafts ranging from 2 feet to 25 feet. However, single lengths of up to 30 feet are available, and shafts can be connected using a simple shaft connector to reach lengths of up to 60 feet for deep pours.
When should I upgrade to the Pro 3+ (3 HP) motor?
We recommend upgrading to the 3 HP Pro 3+ unit if:
- You are pouring low-slump concrete or facing abnormal conditions that restrict flow.
- The unit will run continuously, such as in a precast plant environment
- You are using shaft connectors to extend the total shaft length.
- You need to ensure the frequency never drops below 10,000 VPM under any circumstance
Do you offer protection for epoxy-coated rebar?
Yes. We offer coated heads (ranging from 1-1/2" to 2-1/2" diameter) specifically designed to protect epoxy-coated rebar from nicks that accelerate corrosion. We also offer soft-tipped heads to prevent marring when vibrating against expensive forms
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