Steenbeck editing tables were equiped with toothed belts that tend to disintegrate over time.
As a result, it is very often the case that one needs to replace these belts. Unfortunately, these belts were manufactured according to an standard that is now obsolete : “Synchroflex DR”, with a quarter-inch pitch and a 10mm width.
Would one want to buy these belts in bulk, here is a source : Beltingonline but the minimum order is between 30 and 45 units.
Here is a diagram for the 16mm ST601 & ST 901 tables:
ST701 35mm tables usually require:
DR83 1 piece
DR 88 3 pieces
DR 79 1 piece