Bob from SWISCO responded:
March 10, 2024
Thanks for posting. The 81-020 is 1-1/2" high, whereas the 81-261 is 1-5/8". Additionally, the outer housing on the 81-020 has some stylistic differences, such as that rounded hole that your old roller also features. The 81-020 has been associated with Harcar in the past, therefore I suspect this is the one you need. Just double-check the dimensions to be safe. Alternate image for 81-020
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