As the name implies, mixer grinders can both mix and grind ingredients. They’re typically used for grinding spices, cutting fruits and vegetables, making puree, and more.
Anyone who owns one will know how useful they are. But they’ll also know how loud mixer grinders can be. Why is this?
They run at high speeds
Mixer grinders run at very high speeds to make light work of whatever you put in them.
Typically, you can expect a mixer grinder to run at 20,000RPM. To run at this speed, the motor needs to work quite hard, which produces a lot of noise.
The ingredients can be noisy
Pulsing hard ingredients (such as peppercorns or other spices) can create a lot of movement. As the ingredients bounce around inside the plastic chamber, they’ll create a lot of noise.
Most use brushed motors
Motors that produce rotational movements use either a brushed or brushless model. Most mixer grinders will use a brushless motor because it’s cheaper.
A brushed motor contains fixed magnets and a rotating electromagnet. To perform a complete rotation, the polarity of the fixed magnets must be flipped, as the electromagnet only rotates 180 degrees. Carbon brushes are used to flip the magnet’s polarity to force the electromagnet to rotate.
Many are made using cheap components
In order to make mixer grinders affordable, they’re usually made using cheap components. This ranges from the plastic body to the motor’s main parts, where manufacturers will use as little copper as possible.
Instead, they’ll use cheap materials and bearings because they assume people will throw the mixer away when it breaks.
The problem with this is that cheap components make more noise. It can be as simple as poor connections, or a lack of lubricant in high-stress areas.
As you can see, there are a few reasons why mixer grinders are loud. You can avoid many of these issues by investing in a really high-end model, but it’s often cheaper to just change the environment in which you’re using it.
How to Reduce Mixer Grinder Noise
1. Place the mixer grinder on a sound dampening mat
Much of the excess noise comes from vibrations passed into the surface on which it sits, which can then resonate through cabinets and worktops.
Any of these options will be fine, but you’ll have better results if you go with specific soundproofing material.
For example, both sound deadening mats and mass-loaded vinyl are limp mass. This means they don’t vibrate when sound waves hit them, and so cut off transmission between the source and the worktop.
2. Fit some rubber feet to dampen the noise
A similar option that saves you from having to put down a mat every time you want to use your mixer grinder is to fit some rubber feet.
Some rubber grommets will be ideal for this. Rubber is great for reducing the transmission of vibrations, and so should drastically reduce the amount of noise your mixer grinder makes.
You can simply stick 4 (or more) grommets to the bottom of your mixer grinder. If you want to really get good results, stick them down with Green Glue. It’s a noise-dampening acoustic caulk and will reduce noise transmission even more.
3. Move your mixer grinder away from the wall
Sound waves reflect off hard, flat surfaces such as walls. The flatter and smoother a surface, the better it’ll reflect sound waves.
For example, tiles (commonly found in kitchens) are much better at reflecting sound waves than exposed brick.
The simple solution to this is to move your mixer grinder away from the wall when you use it.
Your best option would be to use the mixer grinder on a kitchen island if you have one, as this should be far enough away from any walls.
4. Add some soundproofing materials in your kitchen
If you don’t have the option of moving your mixer grinder away from a wall (for example, if you live in an apartment), you can try soundproofing your kitchen.
That said, I’d recommend focusing more on acoustic management than actual soundproofing. Cutting down on reverberation will probably do as much as specifically blocking sound transmission.
A good option for this is acoustic foam. The acoustic foam absorbs sound waves and helps to reduce reverberation.
Putting some panels up in your kitchen, if only when you use your mixer grinder, will help to reduce the issue of noise pollution.
That said, it won’t specifically block sound transmission, but generally speaking, a mixer won’t be loud enough to pass through solid walls anyway.
6. Buy an enclosure
You could always buy a sound enclosure for your mixer grinder, although you’ll probably have to buy a blender model instead. It’s unlikely you’ll find a sound enclosure specifically for a mixer grinder.
However, this might not be the best option because they’re made from clear plastic and so won’t do loads to reduce noise levels.
Making your own will be much less expensive and much more effective. I’d highly recommend investing the time into building your own soundproof enclosure if you want a truly quiet mixer grinder.
7. Buy a quiet mixer grinder
If you’ve got a budget, your best option might be to buy a new mixer grinder that’s designed to be quiet.
While most won’t offer quite use as a selling feature, you just need to be clever with the kind of mixer grinder you buy.
For example, this mixer grinder is designed for use primarily with flour. It has a plastic body that’s insulated. More than anything, this means it’ll be a lot quieter.
Alternatively, as I mentioned earlier, high-end models will usually be much quieter than cheaper ones.
Look for a model with a brushless motor if possible, and sharp blades. Both of these are areas where cheaper models cut back, and so you’ll notice a difference if you invest in a quality model.
That said, trying some soundproofing solutions first probably will be less expensive than buying a new mixer grinder. But if you haven’t got the time, this is a good option.
Some Final Thoughts
Hopefully, the options above have given you some advice on how to reduce mixer grinder noise.
The most important piece of advice is to reduce sound transmission between the mixer and the surfaces around it. Doing so will drastically reduce the issue.
And also buy the best mixer grinder that creates less noise.