From what I can gather Bolens offered three major types of small tractor snow throwers:
18000 series throwers - single stage and various widths from 32" to 42"
50146 - 2-stage 46" unit, light weight but takes CW input (non-Iseki)
1948/1949 - 2-stage unit, heavy, takes CCW input (Iseki)
I almost bought a 50146 before finding out it takes a different PTO direction input than my Isekis have. I have a 1948 unit that I plan on installing on a Iseki TS2202F (Bolens G244). The 1948 really is a monster among snow throwers. Installed weight is claimed to be over 500 lbs. In my opinion it's too much thrower for the TX series tractors although people have and are using them successfully on such. The 50146 would be an ideal thrower for the TX tractors if it turned the correct way. Alternatively I've found that the Kubota 50" 2-stage blowers (
B2650/B2750/etc.)
should be a better match for the TXs than the 1948/9. They take a CCW input and are chain driven to the impeller which allows easy speed changes via the output sprocket. They are designed to take around a 2500 rpm input vs. the 2000 the Isekis put out. I was fortunate enough to find a
B2650 for a very good price but normally they are probably not worth the cost to buy and modify for an Iseki. Weight is about half of the 1948 do mainly to lighter construction (thinner steel) and lack of the heavy gear box.