Smooth bearings, didn't suck in air through bearings. Time will tell.
My previous off-brand ninja blade replacement immediately started sucking air and leaking grease into my drinks.This one spins smooth, doesn't leak, and seems to work great so far. I have only used it with the included cup. The threads seem slightly different than the original ninja cups, so I would recommend buying a blade/cup combo like this set.
✔ Verified Purchase
Propeller stuck
The Joystar replacement part functioned perfectly for 4-5 months without any issues. However, one day, it developed a peculiar noise, and eventually, the blade ceased to turn altogether. Upon inspection, it became evident that the blade is now entirely blocked, rendering the blender unusable.
✔ Verified Purchase
A
Andrew t.
October 11, 2024
Fit perfectly
Excellent works perfectly.
✔ Verified Purchase
K
kathleen
January 04, 2026
Will not work with BL660WM 30 like it says it will.
Says it will work for BL660WM 30, which we have. It does not work at all. The cup that came is 3 prong. The BL660WM 30 needs a 4 prong cup. The blande will not move.
✔ Verified Purchase
M
me right here
February 20, 2023
Great replacement parts
My original Ninja blender cup and blade both got hairline cracks so I needed to replace them. The new blade is much better.
✔ Verified Purchase
✔ Verified Purchase
Didn’t work in my Ninja Ultima Blender
Didn’t engage the motor.
✔ Verified Purchase