Zero-Max Stainless Steel Single flex six bolt Composite Disc Couplings - Manual

13200 Sixth Avenue North Minneapolis, MN 55441-5509 PHONE (763) 546-4300 FAX (763) 546-8260 DOC NO.: 6AXX-SS-INST Rev B
TOLL FREE 1-800-533-1731
www.zero-max.com Revised on 5/2/12
Installation Instructions for Stainless Steel 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.
 Open end wrench for coupling hex bolts.
 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 hub (Fig 2) see assembly details and table on
page 3 on page 3.
4. 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.
Coupling and shaft alignment should be checked periodically due to foundation settling, equipment shifting, etc.
Alignment should be re-checked after the first several hours of operation.
5. Install the disc pack between the hubs. Three bolts connect the disc pack to each hub (6 bolts total). Insert the
bolts thru the 3 holes of the first hub that is tightened to the shaft and tighten the locknuts until the disc pack
bushings are seated into the hub counter bores.
6. Adjust hub separation to dimension “C” specified in the Table 1 and diagram 1. The disc pack bushings will need
to be seated into the second hub counter bores in order to get the proper “C” dimension. 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 and re-check angular and parallel misalignment.
7. Install the three bolts connect the disc pack to the second hub. Insert the bolts thru the 3 holes of the second hub
and tighten the locknuts until the disc pack bushings are seated into the hub counter bores.
Table of contents
Pg Description
1 Installation Procedure
2 Assembly Specifications
3 Hub installation Specifications
4 Parts
List