Zero-Max Aluminum Single Flex Six Bolt Composite Disc Couplings - Manual

13200 Sixth Avenue North Plymouth, MN 55441-5509 PHONE (763) 546-4300 FAX (763) 546-8260 Rev 2/12
TOLL FREE 1-800-533-1731 www.zero-max.com
Installation Instructions for Single flex six bolt Composite Disc Couplings
1. Tools Required:
 Torque wrench with sockets for coupling hex nuts and hub set screw or clamp collar screw
(see table 1 and table 2).
 Open end wrench for coupling hex bolts (see table 1).
 Laser alignment tool or Dial indictor (recommended). If not available, a straight edge and
feeler gauges.
 Caliper
2. These instructions are for standard series couplings with normal running conditions. Special
couplings may have different instructions or drawings.
3. Inspect hub bores, shafts and keyways making sure there are no burrs. Clean hub bores and
shafts. Standard CD coupling clamped and set screw hubs are supplied with slight clearance
fit (see catalog). Install hubs on shafts. Place one of the hubs flush with end of shaft. Tighten
hub to shaft: If hub is set screw style (Fig 1), see Table 2 on page 3 for proper tightening
torque. If installing clamped (Fig 2) or QD bushing hub (Fig 4) see assembly details on page 3.
4. Adjust hub separation to dimension “C” specified in the Table 1 and diagram 1. If possible, the
shafts should not extend beyond the inside hub face. If the shaft extends past the hub face
verify there is enough clearance to install the disc pack and also verify the shaft will not contact
the disc pack during operation. Tighten second hub to the shaft.
5. Align the shafts within the limits for parallel and angular misalignment specified in Table 1. See
diagrams 2 and 3 for recommended measurement and alignment methods. For best alignment
results, use a laser alignment tool or dial indicator. Always rotate the hub on which the
indicator is mounted.
Aligning the shafts as closely as possible at the time of initial installation will reduce noise and
allow the coupling extra capacity for misalignments and loads which will occur during operation
over the life of the connected equipment. Installing and operating the coupling at higher
degrees of misalignment is possible (see catalog ratings), but will generally reduce the life of
the composite disc pack.
Table of contents
Pg Description
1 Installation Procedure
2 Assembly Specifications
3 Hub installation Specifications
4 Parts
List