Tennant/Nobles - 4039461 - Isolator, Neoprene, 1.25 X 1.25, M8 (Replaces Tennant 1212543)

Tennant 4039461 is a neoprene isolator, 1.25 x 1.25 in (31.8 x 31.8 mm) as printed, with an M8 thread, also listed as 1212543. It is used on orbital scrub heads only.

The T300 50 cm orbital head lists 10 of them. The T500 700 mm orbital head lists 13, plus 2 more in the orbital head lift group. That covers the T300, T500 and T600 family and the Nobles Speed Scrub 300 and 500. Tennant's T300 manual says to replace the four lower vibration isolators on the orbital head every 500 hours and asks for trained personnel to do it. The parts list count and the manual's four lower isolators are not the same number, so confirm on your drawing which positions this part fills.