Rockwell RK5151K Sonicrafter F80

In the oscillating multi-tool market, Rockwell has proved once more that they are significant players. This time they have introduced the new Rockwell RK5151K Sonicrafter F80 Oscillating Multi-Tool with a new Duo-tech feature which no other oscillating tool company has come up with yet. In our Rockwell f80 review, we are going to give you a clear picture of its features.

Rockwell f80 is the first multi-tool of its category that offers a choice of two oscillating angles. The Duo-tech oscillating technology lets the users choose the appropriate oscillation angle to achieve the best outputs when performing specific tasks. Most of the similar multi-tools have one fixed oscillating angle in the industry, but Rockwell incorporated this latest innovation in the F80 tool. This means the users have the option to switch from 3.4 degrees to 5.0 degrees when it’s required. This Rockwell Sonicrafter F80 4.2 amp unit comes with a 10-piece accessory kit. Different job applications like scraping, sanding, cutting, or polishing can be entirely made with this tool.

Rockwell RK5151K 4.2 Amp Sonicrafter F80 Oscillating Multi-Tool with...
  • [POWER & PRECISION] Up to 19,000 oscillations per minute with 2 angles of attack: 5° for more power, 3.4°...
  • [1 TON OF CLAMPING FORCE] The tool-free Hyperlock blade change system prevents slippage while operating, no...
  • [UNIVERSAL FIT] Accepts all major brand’s blades, sanders, and accessories for your convenience—but this...

Features of  Rockwell RK5151K

Weight and Dimension

The tool is lightweight and weighs 3.3 lbs. The dimension of the product is 11.6 x 3.5 x 4 inches.

Oscillations per minute (OPM)

It’s capable of producing 10,000-19,000 oscillations per minute.

DuoTech Oscillation Technology

The Rockwell oscillating tool F80 is the first one that came on the market with dual oscillating angles. While most multi-tools provide only one fixed perspective, Rockwell first introduced this feature in their latest oscillating tool Sonicrafter F80. Now the user can switch between a 3.4 and 5.0-degree oscillation according to the demand of the job at hand. The 3.4-degree oscillation provides the user a continuous or steady control. It ensures more precision in work. When you have to handle tasks that need more attention and accuracy, you can set your tool to an oscillation angle of 3.4 degrees. However, some projects may require faster results, and the 5.0-degree oscillation is perfect for getting aggressive results. With this higher oscillation angle, you can complete projects that demand quicker results and have time limitations.

Hyperlock Tool-free Clamping System

This Rockwell RK5151K F80 unit has a Hyperlock clamping system. It is a tool-free blade and accessory changing mechanism that firmly and securely locks the blades and other accessories to the group. You can alternate your accessories according to your needs while working, and your accessories don’t fall off due to an insecure attachment. In this Hyperlock system, a screw is used to tighten up the fitting between two metal discs, and this is done with a clamping force of 1 ton. This considerable force doesn’t allow the accessories or blades to move or slip while the tool works. You can place and lock the edge at any angle, and it doesn’t get detached. Therefore, this system lets you finish your project peacefully.

Universal Fit System

At the early evolutionary stage of oscillating tools, most of the accessories were proprietary. However, users wanted to use different manufacturers’ blades and other attachments with different branded oscillating tools as time passed. So, the various tool companies also had to develop the idea that they should find a technique to match those accessories and thus satisfy the users’ needs. Like others, Rockwell, too, brought a solution for this issue, and their answer was the Universal Fit System. It’s the first natural universal fit system in the industry that doesn’t use an adapter.

The Universal Fit System makes the Rockwell Sonicrafter a versatile tool. Like another previous model of the Sonicrafter F series, this feature has also been incorporated in the Sonicrafter F80. This unit is compatible with most other significant branded blades and accessories and thus makes your work trouble-free. Furthermore, Rockwell blades and attachments are made so that they effortlessly suit other oscillating multi-tools. It doesn’t matter which brand or model or even the year you purchased your accessories. Hence, if you already own other oscillating tools, you don’t have to take any stress about whether the Rockwell multi-tool accessories will match or not. You don’t have to look for various oscillating tools or compatible blades and other accessories all the time. Now you can take a true universal oscillating experience by using this Rockwell unit.

4.2 Amp Motor

Its sturdy and robust 4.2 Amp motor supports constant speed. It can endure heavy loads. Though anyone can use this tool, it’s ideal for construction workers whose job requires powerful multi-tools to accomplish heavy-duty applications faster with accuracy.

Variable Speed Control

The variable speed dial control is at the back of the unit. It’s easily accessible but is kept at the end so that no accidental changes occur to the speed. You can use this dial for precision control. It supports you create smooth movements. By setting an appropriate oscillation speed, you can ensure a clean finish whenever it’s required. By controlling speed, this dial also makes the tool perfectly safe for use.

Highest Cutting Load

The Rockwell Sonicrafter can handle up to 35 pounds of cutting load. In the industry, it’s one of the best capabilities nowadays. It means that this tool can be pushed harder than any other branded oscillating multi-tool.

LED Light

In Rockwell Sonicraft F50 (Model RK5141K), there were two LED lights. However, this Rockwell Sonicraft F80 features one LED light. It is placed in front of the tool. It was moved to the front as it was necessary to make space for the Duotech oscillation switch. F80 also lost one of the two switches for the design purpose available on the model F50.

SEE ALSO: DEWALT DCS355D1 20V XR Oscillating Multi-Tool

Corded and Electrical

It’s a 10 foot corded and electricity-powered unit.


A three-year warranty from the manufacturer backs up the Rockwell RK5151K F80 Duotech Sonicrafter.


  • Dual angles of oscillation, 5 and 3.4 degrees.
  • Geotech oscillation technology helps to choose the ideal angle of oscillation. It confirms the accuracy and power necessary for a particular task.
  • A Tool-free Hyperlock clamping system is a natural mechanism for locking and changing accessories and blades. It uses 1 ton of clamping force to protect the accessories from slipping while in use.
  • Universal Fit System makes the F80 unit versatile as it fits most of the significant branded blades. Even Rockwell blades provide other manufacturers’ oscillating tools.
  • 4.2 Amp durable and powerful motor can take heavy loads and won’t stop running. It allows for constant speed.
  • Variable speed dial helps to control precision in work.
  • Sonicrafter F80 withstands the maximum stall force of 35 pounds.
  • One LED light to illuminate the workspace.
  • The 10-foot cord gives the user convenience to working in any working situation.

Cons with Solutions

Hyperlock tool-free mechanism requires a bit more time and effort

One notable disadvantage of the tool-free Hyperlock accessory clamping system of Sonicrafter F80 is, it uses a pin that needs screwing. Though it’s a tool-free system, a pin is required to attach the accessories. As a result, it takes a little bit more time to change accessories or blades.


It’s true that in the Hyperlock system, the clamps have been added for tightening up the accessories and also for safety reasons. Even though this locking mechanism may provide the extra protection necessary during use, blades or accessory switching becomes a little confusing compared to other usual systems. Some users who want an oscillating unit that will save time may find this accessory-changing system time-consuming.

Nevertheless, once you get used to the process of locking and unlocking the clamps, using the Sonicrafter F80 will become more comfortable for you. Then you’ll be able to take advantage of the system thoroughly. You’ll be able to work securely without any hassle.

The Instruction Manual doesn’t contain enough information

Some users have claimed that there isn’t adequate information about setting up the unit before using it in the instruction manual.


The users, who have less experience with oscillating tools, may face difficulties setting up the tool F80. However, this won’t be a challenge or problem for more experienced users familiar with oscillating tools.

Frequently Asked Questions

Does the tool vibrate and heat up enough?

All oscillating tools vibrate during use—some echoless, and some echo more compared to others. Of course, this Rockwell Sonicrafter F80 echoes too, but not excessively, making you feel uncomfortable while working with it. As the tool doesn’t vibrate much, there isn’t any report of heating up. However, as it’s an electrical unit, after working a couple of hours, if you give it a rest for some time, the tool will get time to cool down and won’t get heated much. Besides, it’ll extend the service life of the apparatus.

Does the Rockwell F80 work with 220 volts?

No, the tool works with 110 volts.

Which blade comes with F80 for cutting nails?

The F80 comes with a 1-3/8″ Extended Life Wood & Nail end cut blade – RW8967. For cutting nails, this blade would be the best.

What are the main differences between Sonicrafter F80 and Sonicrafter F50? Is F80 better than F50?

Like a multi-tool, the Sonicrafter F80 comes with all the features that can fulfill your needs. If you compare it with F50, the F80 has some compelling features that the F50 doesn’t have. For example, F80 has a 4.2 amp motor while F50 has a 4.0 amp motor. So, F80 is a little bit more potent than F50. The F80 has dual oscillation angles- 5 degrees and 3.4 degrees. 5-degree oscillation for faster cuts and 3.4-degree flux for getting more control when you want fine cuts. On the other hand, the F50 has only one oscillation angle of 5 degrees. Except for all these, they are very similar.

Final Verdict

Overall, the performance of the Rockwell RK5151K 4.2 Amp Sonicrafter F80 Oscillating Multi-Tool is quite impressive. This oscillating tool has a wide array of accessories, and a storage box is provided as well. It has made working life easier for both occasional home users and professional users. Many customers have reported that they had a better working experience than before while finishing their projects. This oscillating unit has received high ratings consistently from customers over the internet.

Last update on 2021-10-27 at 20:32 / Affiliate links / Images from Amazon Product Advertising API

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