Rockwell RK4245K Vibrafree 5-Inch Random Orbit Sander

by Rockwell

Product Description

Amazon.com Product Description

The Rockwell RK4245K Vibrafree Random-Orbit Sander utilizes innovative technology to dynamically cancel vibrations regardless of load variations, resulting in twice the removal rate with 50% less vibration. It's also fast, safe, and easy to use, with a dust removal system to improve the air quality of your shop, and a pad brake to protect your workpiece.

RK4245K Vibrafree Sander At a Glance: Dual pad structure counteracts friction and vibration 50% less vibration for comfort, safety, and efficiency Twice the removal rate of ordinary orbit sanders Aluminum base for flatness and durability Dust-sealed switch prevents premature wear

2 counteracting sanding pads reduce vibration to your hand. View larger.

The aluminum base ensures flatness and durability. View larger.

Sand up to Twice as Fast with Half the Vibration
This Rockwell vibrafree sander increases productivity while keeping feedback vibration low. It works like those well-known noise-cancelling headphones that record the noise and play back an opposite signal to cancel the noise. With other sanders, high levels of vibration can mean the sander is not in contact with the work surface at all times, which translates into wasted time and energy. Those same high levels of vibration can also be delivered directly into your hands, causing discomfort and more downtime. Tool vibration can lead to serious problems for professionals. After only a few minutes, vibration causes loss of sensation in the fingers and hand, and it can take hours to recover. Following hours of use, recovery can span several days. And continual exposure to vibration can culminate in HAVS (Hand Arm Vibration Syndrome), a severe occupational disease that may cause disability and lead workers to lose their jobs.

Thankfully, active vibration cancelling technology is what seperates this vibrafree random-orbit sander from the pack. It is uniquely designed with two counteracting sanding pads, so the vibration is redirected back into sanding, instead of into your hand.

Sand Faster and Safer
To prevent these kinds of vibration-based problems while simultaneously increasing efficiency, the RK4245K Sander features Vibrafree sanding technology. With traditional sanders, part of the spin goes into the vibration rather than the sanding. With the RK4245K, two counter-acting sanding pads move in opposite directions so the sanding vibration is re-directed back to the sanding instead of onto your hands. Previously wasted motion is thus channeled into sanding, effectively doubling the material removal rate.

Cleaner and Healthier Work Environment
This sander comes equipped with a Cyclonic dust/air separator to remove 50% more dust than other sanders. This system uses centrifugal force to separate the dust particles from the air and trap them inside a transparent dust box, making it easy to monitor fill rate.

And unlike cloth bags, the box never clogs, loses suction, or wears out.


User-Friendly Features
Powered by a motor built in-house for better power and efficiency, the RK4245K has great features. An aluminum base ensures flatness and durability, while a dust-sealed switch prevents premature wear. For reliable comfort and control, this sander also has a soft, anti-slip grip area, and a pad brake that reduces swirl markings or scoring to the workpiece.

What's in the Box
RK4245K Sander; one dust extraction adaptor; one CDS (Cyclonic Dust/Air Separator); five 60-grit sanding sheets; five 120-grit sanding sheets; five 180-grit sanding sheets; heavy-duty carrying case; and manual.

The cyclonic dust/air separator removes 50% more dust than other sanders.

Product Description

The Rockwell RK4245K 5-Inch Random Orbit Sander stands above other sanders because it doesn't just dampen vibration, it cancels it out.  The active vibration canceling technology of the RK4245K reduces vibration by 50 percent makes this Random Orbit Sander extremely comfortable to use.  The patented design is based on two counter-acting pads that move in opposite directions — directing the vibration into sanding instead of your hand.  The RK4245 Random Orbit Sander also has a innovative bagless and filterless dust collection system that removes 50 percent more dust than other sanders to reduce clean-up time and provide cleaner breathing air.

Features:

• Unique bagless, filterless Cyclonic/Dust/Air Separator system won't clog and is always as effective as the first time it was used
• Twice the removal rate with half the vibration
• Aluminum base for exact flatness and extra durability
• Soft ergonomic palm grip
• Dust sealed rocker switch for longer life

What's In The Box:

• Rockwell RK4245K 5-Inch Random Orbit Sander
• Five 60-Grit Sanding Discs
• Five 120-Grit Sanding Discs
• Five 180-Grit Sanding Discs
• Vacuum Adapte
• Cyclone Box
• Heavy-Duty Tool Storage Bag

See all Product Description

Product Details

• Item Weight: 7 pounds
• Shipping Weight: 7.6 pounds (View shipping rates and policies)
• Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
• ASIN: B001TH79OI
• Item model number: RK4245K
• Average Customer Review: 4.6 out of 5 stars  See all reviews (7 customer reviews)
• Amazon Best Sellers Rank: #85,636 in Home Improvement (See Top 100 in Home Improvement)
  • #99 in Home Improvement > Power & Hand Tools > Power Tools > Sanders > Random-Orbit Sanders

Customer Reviews

Most Helpful Customer Reviews

4 of 4 people found the following review helpful:

4.0 out of 5 stars Solid, Sound, but can leave swirl marks, February 4, 2010

By 

Kramer "Tools tools tools...." (minneapolis MN) - See all my reviews

This review is from: Rockwell RK4245K Vibrafree 5-Inch Random Orbit Sander (Tools & Home Improvement)

I really wanted to love this sander. Having owned an older model Dewalt sander that was good until the sanding pad would no longer slowly spin, but would just take off and spin madly, I decided it was time to try something new. I noticed Rockwell had been putting out some new products with some promise and decided to try this.
I like how it feels. Solidly built, comfortable.
Dust collection seems good, even better with vacuum attached.
Quiet operation.
Very low vibration.
Nice carry case, except i don't like the limited sand pad storage.

--This thing leaves swirl marks. -- More like "edge lines" from the two inner rings rotating in opposite directions. I know this isn't always a factor when just wanting stock removed before sheet sanding, but its still irritating. The limited suppliers of sanding disks and the swirling leaves me wishing I would have stuck with Dewalt Porter cable Makita, or Milwaukee. Anyhow It's still solidly built, comfortable, and does remove stock well, but I'll just have to use my nice Dewalt 1/4 sheet sander to chase all the lines left by the Rockwell orbital...

**EDIT**

Using this product again I did not have any issues with swirling. It was a pleasure to use. I have upgraded my rating from 3 stars to 4. (the initial swirling may have been due to using it off the edge of a board)
Hope this helps-

1 of 1 people found the following review helpful:

5.0 out of 5 stars nice sander, September 7, 2011

By 

jean - See all my reviews

Amazon Verified Purchase

This review is from: Rockwell RK4245K Vibrafree 5-Inch Random Orbit Sander (Tools & Home Improvement)

This sander is excellent. Now if holds up well it would be a possible 8-9, if the dust canister was a better design as far as latching mechanism maybe a 10. The sander paper is no problem to order thru Rockwell so don't order the 5" papers as a package thru Amazon they will be useless for the Rockwell design. The sander really is a pleasure to use.

11-2-2011

This sander started off great, a good workhorse....up until today when a bearing froze up in the spindle housing. . . . .
the sander bit the dust . . .lol
so I will caution future buyers of this product . . .better wear your kid gloves when using this machine, as it looks like it might be wimpy. . .

11-7-2011

Wanted to add, that the parts I need to repair my defunct sander are not available and the supplier had no idea when they would become available... I will say to a buyer do not purchase this sander. . .and if you do, don't forget I told you so...

11-10-2011

Contacted Rockwell and explained the situation, they said they would send me a new sander and they are willing to see me satisfied with the product. . . .hooray, thank you Rockwell. .!!!

1 of 1 people found the following review helpful:

5.0 out of 5 stars Exceeds expectations, July 1, 2011

By 

Wayne (Union City, CA USA) - See all my reviews
(VINE VOICE)    (TOP 500 REVIEWER)   

This review is from: Rockwell RK4245K Vibrafree 5-Inch Random Orbit Sander (Tools & Home Improvement)

There's no need to write a long review of features because there's a detailed description given by the manufacturer. The important question is whether it's hype or truth. It really does do an outstanding job, sands cleanly, is as vibration free as you can get, works quickly and leaves little dust even without attaching a shop-type vac. With hardwoods, I had no problem getting a furniture quality finish.

Replacement disks might be a hassle to find, and for years, Amazon didn't stock them. Since customers frequently bought the wrong disks with it, Amazon's system automatically let customers know what was bought together with this sander, making the problem worse. Understanding how this works makes it clear that you need disks with a separate outer ring.

The only "issue" is that some grits of paper (coarse) are harder to remove and it feels as if there's a risk of pulling the pad right off the sander. It's hard to make a case that something might happen when it didn't happen, but I make a point to hold the pad down when I peel off very heavy paper.