Silicone bumpers for RD60xx series power supplies

While putting together a list of products for the 11.11 sale, I spotted some interesting accessories for RuiDeng power supplies: bumpers. Yes, they’re extremely niche and somewhat debatable, but this time, besides the things I ordered for work, I wanted to buy something just for fun, and I think I made the right call.

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Let’s start with the price. Yes, $13—or, to be precise, two-thirds the price of a fairly decent voltage converter, or more than a multimeter that measures inductance (which I ended up buying for a review). Some people might think that’s crazy, and to some extent I’d agree. But friends, sometimes you just want to buy something because you like it or find it interesting. That’s exactly why I bought these.

Anyway, I placed the order, and a coupon happened to come along, so the total came to $11.11. Kind of symbolic, actually :)

Today my wife picked up a large package from the Meest branch. Though, knowing RuiDeng, they might just as well have packed these in a Styrofoam box :)
Inside was an antistatic bag with a sticker listing the compatible models. It would have been more accurate to list the case models rather than the converter models, though: there are only two case types, since the converters are all the same size.


Inside are two bumpers and a bag of hardware


There are mounting holes on the underside of the bumpers. They’re different, so there’s a front and a rear one. Besides having the holes in different places, the rear bumper also has protruding “feet.”


The manufacturer points this out too: the front is smooth, while the rear has feet. I’ll come back to those later.


There’s nothing else to inspect, so let’s move on to a real-world test. The bumpers are quite soft, but also fairly thick, so they already feel a bit bulky.

But I’ll try them on a third case version that isn’t listed in the specifications.
There were three case versions: a short one, which has unfortunately been discontinued, and two larger ones that differ slightly in the placement of the fan grille.

I have several power supplies at home, and two of them are in the small cases. I bought the first one on AliExpress, and the second from local sellers on OLX, for quite a lot, as I recall—around 800 UAH.

I was curious to see how the bumpers would look on the short case, and I have to say, it looks better than I expected.
The only issue is that the mounting holes don’t line up, so I decided to try them on the small one first, then fit them to the larger one.



The power connector gets in the way a little, too. It isn’t actually a standard part of this case; it wasn’t there originally.


The bumpers fit fairly tightly. You could probably use them without the hardware, but I think that would be inconvenient, since they could slide off when you try to move the power supply across the table.

Here’s a comparison with and without the bumpers. I’m curious which version you like better.



As I mentioned earlier, a little about the feet. They’re not usually all that useful, but in my setup I sometimes have to stand the power supply upright or prop it against a wall. I don’t really have a workshop, so my equipment and instruments tend to be stored wherever there’s room rather than kept set up in one place. I have to make do.
In the past, this meant the power supply would press against the switch, which certainly didn’t make it any more useful. It could also switch on, and I don’t like it when a power supply turns on as soon as you plug in the power cable.

In any case, I think the manufacturer got this part right.


Now I can fit the bumpers properly to the case they were designed for.
1. Unscrew the four feet. I’ve only just noticed that they’re actually spaced differently from both the ends and the sides of the case.
2. Take the included hardware. They actually gave me 5 screws instead of 4, so one is clearly a spare.
3. At first I thought I’d use the screws that held the feet in place, but they’re clearly too short, which is why the kit includes longer ones.
4. Put the covers on and secure them without overdoing it, and that's it.


This version looks a little better, which makes sense: the power supply is quite large, so the covers are less noticeable and look more harmonious.


The back looks just as good; no complaints at all.


To be honest, when I ordered them, I didn't pay much attention to the description. I did think, though, that this setup would make it convenient to stack the power supplies on top of each other.
I checked, and sure enough, the covers have raised sections and recesses designed to keep the power supplies from sliding relative to each other.
Yes, you can still slide them forward or backward, but first, try moving silicone while pressing two pieces together—the power supplies are heavy, after all. And second, sliding them forward isn't a problem, since the power supplies are quite long (which I don't particularly like).


I tried to see if this would work by placing the rear cover on the front of another power supply, but no luck: the raised sections are in different places on the front and rear covers, so it didn't work.
Still, it wouldn't have been much better even if they had fit, since the top power supply would still have tilted slightly backward: its rear covers would rest on the casing of the lower power supply, not on its covers. But it's a nice idea all the same.


The description also emphasizes that this is exactly how they're meant to be used: the raised sections should line up with the recesses. Now I just need to buy some more covers like these :)))


As you know, I've had practically every RuiDeng model through my hands, except for the really old ones that are simply obsolete. In the end, I kept three versions: 6006P, 6012P, and the new 6030. The 6006 and 6030 are my main units, while the 6012 is a backup, and I have to say they cover about 95% of my needs. The smaller cases house 500 W power supplies. They do need better cooling to deliver 500 W, but I can get 350 W continuously without any problems.

Now I look at this "family" and wonder whether to get the little ones some outfits too.


So, what can I say? I'm more than happy with them. It'll be interesting to see how they hold up over time, but I've tried them this way and that, and they're fine. I like them.
Of course, if the power supplies are installed permanently, I wouldn't say these covers serve any particular purpose beyond aesthetics. But if you have to move a power supply from the bench to the floor and somewhere else every so often, they work just fine.
The only thing that might put you off buying them is the price. Yes, I think a pair of silicone covers is a bit expensive, but personally, I think they're worth it.

That's all from me. Thanks for reading, and as always, I'd be glad to hear your comments.