VOITH PAPER / BIRD
BIRD Voith Paper OEM D-INK Screen Mechanical Sleeve Assembly MPN 255549 NOS
This one uses metal pegs for adjustable shelf positioning.
Voith Paper BIRD Screen Sleeve Shaft MPN 255542 WCN1-381-00010-GEA NOS
This ed Slimline version has a thinner body that feels modern.
Voith Paper BIRD Model 400 Bearing Housing Bottom P/N 252879 CentriScreen...
I used Super Lube Multi-Purpose Synthetic Grease on my office chair mechanism and it's quiet now.