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The Magic Bullet is a high-speed compact, personal blender that chops, grinds, and blends a variety of foods. This electric blender that comes with 17 parts can get the job done in 10 seconds or less. Model number MB1001B.

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cutter bearings have ceased

cutter bearing has ceased

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I believe you mean that the blades are seized.

I have a fix, but no source of replacement parts. The fix may get you going, but you can expect your blades will seize up again some time in the future. This only works if the blades in the cup are frozen, not if the blender motor is frozen.

The blades attach to a shaft which passes through a simple sleeve bearing in the cup, and attach to the rubber drive gear that mates with the blender base. The problem is that there's crud that has made its way down that shaft, past a seal and into the bearing to freeze it.

Procedure:

The blade can be removed by gripping the blades with something to protect your hands--gloves, a towel or other cloth rag, and twisting the rubber drive gear clockwise (it's a reverse thread--CW loosens) with a pair of slip-joint or channel pliers. Don't grip too hard with the pliers, the gear is rubber and will damage easily, and it should come off without great effort. Remember, it's reverse threaded, twist like you're tightening it.

Once the gear is removed, remove the plastic washer from under it if it didn't already come off, and set aside.

Examine the shaft where it enters the bearing. It's likely rusted or coated with food. You may have to clean this off with a dental pick or small brush. You can also try to wash it.

You should be able to put twisting force on the blade or tap on the end of the shaft with the pliers or a block of wood until the shaft pushes through and the blades come out.

This is probably the second most work in this fix-- getting the shaft out when it's frozen in the bearing. Go slow and don't do anything to damage it further. I found that working to remove the rubber gear had slightly loosened the shaft, and by working it back and forth, and cleaning out what I could of the crud around the bearing, it finally came loose and I could tap it through the bearing and out. There is another small plastic washer under the blade. Set that aside too.

Once out, examine the blade shaft. It is likely discolored and glazed from food debris. It must be cleaned without scratching it--it's a bearing surface after all. This is probably the most work in this fix. You can soak it in hot soapy water and scrub it with a kitchen scrubber (plastic, not steel wool) or a plastic brush until its shiny. The inside of the bearing will be a bit harder to clean. I used Q-tips wetted with soapy water at first and then switched to rubbing alcohol to get the last of the residue off (alcohol would work on the blade shaft too).

Be careful of the inside of the bearing, the food-exposed end has a plastic seal which will be worn, but lacking a source for replacements, just try to clean around it without damaging it any more.

I would avoid soaking the cap in water at this point. The bearing and seal can take being soaked, but I'm concerned that water will get behind the seal and take forever to dry out. If you do soak it, try using rubbing alcohol to absorb the water around the seal and speed drying. DO NOT USE WD-40 OR OTHER PETROLEUM PRODUCTS. This part of the blender is exposed to whatever food you put in it. If you don't want to eat it, don't use it here.

While you've got the blades out, you can clean their bottom sides, which are normally hard to reach. Clean both of the shaft washers and the rubber gear too as needed.

At this point you can reassemble your blades, but I took one extra step: I sprayed the inside of my bearing with a graphite lubricant. Graphite is non-toxic, but the propellant/solvent may not be. If you do this, give it time for the propellant to completely evaporate before assembling.

Reverse the disassembly steps to reassemble and make sure the two washers are in place. The first one on the blade shaft under the blade before you insert it back in the bearing, the other one goes on the shaft afterwards, under the rubber gear. Push these close against both sides of the bearing. They provide a little extra sealing.

Don't forget that the rubber gear is reverse threaded. In this case counter clockwise (CCW) is tightening.

After doing this, I was rewarded with a blade that spun freely, and when I churned up a half a cup of water in my blender, it worked nicely without leaking.

Notes:

The seal is the part that I wish we could replace. If it's worn enough your blender will eventually seize up again.

Don't leave liquids or wet food sitting in the cup (exposed to the blade bearing) for long periods of time. If you make a drink, put a regular lid on it, don't use the blades as a lid.

Rinse/clean the blades as soon as convenient and don't let them soak in dishwater (the dishwasher should be OK, they're not immersed).

A worn seal will still work as long as you limit the amount of time it has to resist liquid penetration.

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