…full article is coming soon.
I just became a proud owner of a Brother KH521/Brother KR321 setup. Stay tuned for my notes and pros and cons of this ribber as I am fixing, cleaning, and learning it.
This is what I am discovering so far about Brother KR321 ribber:
Needles are very short and 7.1 mm end-to-end long. They look like needles for Passap machines: no needle “tail” after the needle “butt”. The concaveness on the side opposite to the latch (typical for ribbers). Watch a video on how to remove and insert these needles from/into the ribber.


The retaining bar is narrow and requires a sponge strip. The metal part of the retaining bar is 99 cm long, 5 mm tall, and 6 mm wide (on the outside). I got a 5 mm wide spongy weather strip and inserted it into the retaining bar. I inserted it first and then removed the sticky paper on the top half.
The ribber will work with KH511 and KH521 machines. I do not know how wide the carriage for the Brother KH531 machine is. So, I think if the Brother KH551 is coupled with the carriages from KH511 and/or KH521, this Brother KR321 ribber will work with those setups.
Setting up the ribber is pretty straightforward. Brackets are first inserted into the main bed, then screwed on top and then the ribber bed is inserted.





I recommend inserting the racking lever before connecting the beds.
