Written on March 22, 2010 at 4:40 pm by Power Tool Team

Inch Electric Disc

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Inch Electric Disc
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ELECTRIC VARIABLE SPEED BUFFER POLISHER SANDER TOOL NIB
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The Strengths and Weaknesses of the MBM Triumph 4250 Electric Paper Cutter

MBM, a company based in Charleston, South Carolina, has a great lineup of electric paper cutters that are good for heavy-duty use including the Triumph 4250. We recently took a look at this device and came up with a list of its strengths and weaknesses so you can consider it for use in your workplace. Here it is....

Strengths:

The 4250 can cut up to 1.5 inches of paper at a time. This is a good cutting capacity because you'll be able to trim a couple hundreds sheets at once. It would take too long to process that many sheets with a rotary or guillotine trimmer, so this machine can help you save time.
This machine can cut paper that's up to 16.875" wide. There is ample room both in front of and behind the blade so you'll be able to trim paper of different sizes, even those sheets that are 8.5" x 14" (legal-sized).
The 4250 is equipped with a Safety Cutting System, a feature found in many of MBM's other cutters. The system is comprised of a number of different things including transparent safety covers on the front and back tables, a disc brake, and a safety lock. Also, this device requires two-handed operation so your hands won't be near the blade when it's in use.
This trimmer has a digital display so you can see the exact position of the backgauge. This feature, along with an optical cutting line, will help you get an accurate cut every time you use this machine.
The 4250 is well-constructed and has a variety of metal parts for durability. The blade is made out of Solingen steel, a very high-quality metal. Since this device is so durable, you'll be able to get a lot of use out of it.
As far as a warranty goes, this device is covered for one year.

Weaknesses:

Although this machine's cutting capacity is pretty good, it could be improved. For example, there are other cutters that can cut through 3 inches of paper. It would be great if the 4250 had that ability.
This is a pretty big device so you may have trouble finding room for it on a work surface. Its dimensions are 27.25" (depth) x 25.25" (width) x 14.125" (height). You can purchase an optional stand or cabinet for it if you don't have enough room.

Overall, the MBM Triumph 4250 is a good electric paper cutter. It has a decent cutting capacity (which could be improved a little bit) and it's capable of handling multiple sizes of paper thanks to its large table. This is one of the safest trimmers you can use thanks to the Safety Cutting System so you won't need to worry too much about getting injured. (Note: you should still exercise caution when using this machine.) Also, this product is well-built and is great for high-output environments, especially if you have the room for it. If the 4250 sounds good to you, consider adding it to your workplace today. Happy cutting!

About the Author

If you'd like to purchase the MBM Triumph 4250, you should really visit MyBinding.com. They have this product available at a great price and they also have a wide selection of other Paper Handling Equipment. Plus, you'll get free shipping on all orders over $75.00. If you'd like to learn more about these types of products, you can read all about them at MyBindingBlog.com. Check it out for yourself now!

Rotational Friction and Horizontal Forces!?

A 50-lb electric floor polisher is operated on a surface for which the coefficient of kinetic friction is 0.25. Assuming that the normal force per unit area between the disk and the floor is uniformly distributed, determine the magnitude Q of the horizontal forces required to prevent motion of the machine. The diameter of floor cleaner in contact with the floor is 18 inches. The handle (and +Q, and -Q, the horizontal forces) are placed 20 inches from each other.

I've read through this chapter, and haven't found anything useful, other than the equation M=2/3u(sub k)*P*R

I'm not sure where to go from here, as I don't know what P is, or if this is even an applicable equation!
The answer is 3.75lbs
i figured it out without your help. thanks.

ignoring equation U mention, which I have no information about.

the weight of the floor polisher = 50 lb
the Normal force (the VERTICAL force of floor supporting the weight of polisher) = 50 lb
maximum STATIC friction force {of floor in contact with polisher} = (50)(0.25)= 12.5 lb

so by its natural weight the
motion of the floor polisher is resisted by 12.5 lb of frictional force.
What I don't understand is the horizontal + Q & -Q forces that are placed 20 inches apart?
so
there is more to this question than I've answered but I only understand this much :>)

20 Inch RC Flying Disc