Thanks for the response. this is my first tractor so i am learning as i go. Interesting you mention bent teeth, after posting this i went out and looked at my bucket in detail while having a beer and realized one tooth is missing and all are in different states of disrepair. I also noticed the bottom of the bucket is no longer flat. looks like i am going to have to remedy that also or just fix the teeth and keep digging with it and find a good smooth edged bucket for finish work. any good data or diagrams on the optimal angle of the teeth in relation to the bucket or are you aiming for the bottom of new teeth to be completely parallel with the bottom of the bucket? also i have been trying to find new teeth and have noticed alot of different types of attachment methods, mine seem to have pressed on dimples on the sides( i will try and grab a picture tonight). where is the best place to get new teeth? I am a amateur operator at best but i have finally gotten to put some hours in working the little 530 and i have to say she is not a dozer but moves dirt decently for such a small machine. starting to learn that too much downward angle of the teeth digs too fast and stops the small girl but a slight angle and shallow dig helps scrape the top 4-6" and gets a fuller bucket. prob childs play to most that do this for a living but this is new to me. i do wish i had a smooth bucket also to compare against. anyone ever built a smooth cutting edge that goes over the teeth to make a toothed bucket smooth? might just have to keep an eye out for a cheap smooth bucket. i would not feel as hesitant to cut down the digging bucket to 48" if i had a 60" smooth bucket laying around.
Teeth need to be parallel to the cutting edge of the bucket(bottom). Ebay has some good deals on a set of teeth. They are bolt on, which may serve you well.
They make a bolt on tooth bar, which is more practical that a tooth cover. If you have to have only one bucket, stick with a tooth bucket. I have both, and never take the tooth bucket off.
As for bucket size, a 48" bucket is plenty on a loader your size. You will be able to pack enough dirt or gravel in it to make your machine unstable. a 60" bucket on your machine would be good for mulch and other lighter material's, but could quickly overload your machine if filled with dirt or gravel.
If your into fabricating, buckets are simple. You allready have a pattern. The same place that sells bucket teeth on ebay sells a quick tach plate. I have bought several from them. Titan 5/16" cutout is the one I use for most projects.