Renishaw ATOM Installation Manual page 12

Gluing the disc
There are 2 recommended types of adhesives for bonding the disc to the hub / shaft:
• UV cure adhesive (such as Dymax OP4, gel version)
• Room cure 2-part epoxy (such as Araldite 2014)
1. Apply a thin bead of adhesive to the adhesive mounting surface.
It should be of sufficient quantity only to fill the gap between the hub and disc.
Small amounts may run off into adhesive overspill areas, however these areas
should not be filled with adhesive.
12 ATOM rotary encoder system
Detail A
Bead of
adhesive
Adhesive
Disc
mounting
contact
surface
surface
2. Using a weight (or similar) ensure the disc touches the hub / shaft over the entire disc
contact surface.
Weight
3. Align the disc so it is concentric with the hub / shaft.
4. Cure the adhesive.
Cross section of typical hub and disc assembly
Clearance between
disc ID and hub / shaft
Black
A
mask
Disc Adhesive
contact mounting
surface surface
Movement of disc
during alignment
procedure
Customer hub
RCDM
disc
Adhesive overspill areas