1-Pack Extractor Blade Assembly 7 Fins, Replacement Blender Blade Compatible with Ninja Blenders Auto iQ BL480 BL482 BL642 BL682 NN102

Hasta ahora funciona muy bien con nuestra ninja CT680

I love my Ninja Blender so much. I make a protein shake every day, one with plenty of ice cubes and sometimes fruits and vegetables. The higher watt motor of the Ninja makes it all work perfectly. But these dang blender blade assemblies don't hold up. I imagine the problem is the amount of torque exerted by the 1500 watt motor. The black plastic that holds the blade in place always develops cracks, and then my protein shake starts sneaking through those cracks as it is being blended. Also, the blade element gets a little bit loose, which allows some other leaking. I've tried tightening it (it's tricky because you have to do the opposite of what feels right). Most of these assemblies last me less than 6 months, including the one that came with the blender and was (I assume) made by Ninja. Still, buying a new one of these every 6 months or so is cheaper than buying a new blender. It comes with a gasket that slips into the depth of the threaded part and should help prevent leaking - it does, but only in the part it is protecting. That gasket can't do anything about leaking through cracks in the plastic. I believe that, although the blades are quite sharp, the real work of blending happens through the creation of cavitation pockets . . . that takes a powerful motor.

Used it today, worked great.

Bought this to replace my previous 6-year old Ninja blender blades which started getting stuck. I’m happy with how well this works, didn’t have any problems, no installation required.

Had this for an about 7 days and it performing without any issues and fits without any problems. Would recommend and purchase again