An 85-step unit would need:
(8) 10-Folds = 80 Axles
(2) 2-Folds = 4 Axles
(1) Offset = 1 Axle
To specify your step chains, take a look at our Helpful step chain parts identification guide. You will need to know your escalator type, step width and number of steps.
Step Chain Oil:
Part number: VP-419690 Spec #39 1 gallon
Step chain and roller chain oil with tackifying agent - for use on escalator step chains, door operator drive chains, escalator handrail drive chains and selector chains.