FLENDER ARPEX ARS-6 - Balancing; Fitting the Coupling Parts in Case of Shaft­hub Connection with Parallel Key

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ARPEX 8704 en
Operating instructions 01/2019
6.2.4 Balancing
Prebored couplings and/or prebored coupling parts are delivered unbalanced. It is recommended that
these parts are balanced to suit the application after finishboring (see DIN 740, DIN ISO 21940 part 1).
Balancing is normally done by drilling material away. To keep the amount of material to be removed to
a minimum, a largest possible balance radius must be selected (see figure 6).
Finishbored couplings and/or coupling parts are balanced according to the customer’s specifications.
Fig. 6: Arrangement of the balancing bore with onelevel balancing (balanced after machining the
keyway)
6.3 Fitting the coupling parts in case of shafthub connection with parallel key
Before beginning assembly the fitting bores and contact surfaces for rings, bushes, nuts and closefitting
bolts or taper pins and bushes (see item 6.12, "Fitting the plate packs" and/or separate assembly
instructions) must be cleaned of any rustpreventer. Likewise, the shaft ends must be carefully cleaned.
Observe the manufacturer’s instructions for handling the solvent.
The coupling parts must be fitted with the aid of suitable equipment to avoid damaging
the shaft bearings through axial joining forces. Always use suitable lifting equipment.
The shaft ends should not project from the inner sides of the hub. If necessary, the hubs can be adjusted
to the length of the shaft by fitting spacers or spacer rings (see figure 7). Axial fastening can be effected
by means of a set screw or end plate.
1
L1
Fig. 7: Spacer ring
1 Spacer ring
The set screws should be tightened only with a hexagon socket spanner to
DIN ISO 2936, without extension tube.