//////////// ZERO-MAX
MOTION CONTROL PRODUCTS
Table of contents
Pg
Description
1 Installation Procedure
2 Assembly Specifications
3 Hub installation Specifications
4 Parts List
1. Clean hub bores and shafts. Remove any nicks or burrs. The key (if used) should have a snug side to side fit with
a small clearance on top. Install the key(s) on the shafts. Mount the coupling hubs on the shafts.
2. The equipment must sit flat on its base and be proper mounted before aligning shafts. Adjust hub axial spacing to
proper C dimension Note: C=(2*D)+center member length. If possible, the shafts should not extend beyond the
inside hub face. Move the center member between the hub ends and support with blocks or a nylon strap. Install
the disc pack between the one of the hub. Three bolts connect the disc pack to the hub and center member (6
bolts total). Insert the bolts thru the holes of hub/center member and tighten snugly. (do not torque bolts). Repeat
procedure for other end. As a guide the disc pack width D dimension should be with tolerance shown in Table 1.
This dimension is suggested for initial installation and has additional capacity for thermal and structural movement.
The axial spacing of the shaft should be positioned so that the disc packs are flat and parallel to the mating
surfaces under normal operation conditions. There should be a minimal amount of waviness in the disc pack when
viewed from the side.
3. After adjusting axial spacing to proper dimensions tighten hubs to shafts (See Tables 3 and 4 on page 3 for proper
tightening torque).
4. Laser alignment is an option. Dial indicator method is shown.
5. Align the shafts to the specifications for angular misalignment specified in Table 2. Multiple number in table by the
hub diameter to get angular misalignment specification. See diagrams 2 for recommended measurement method
using a dial indicator to read the face of the other hub. Rotate the hub shafts together making sure the axial
spacing remains constant. Adjust equipment by shimming and/or moving. Repeat procedure for until coupling is
aligned. 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.
6. Align the shafts to the specifications for parallel misalignment specified in Table 2. Multiple number in table by the
DBSE (C dim) to get parallel misalignment specification. See diagram 3 for recommended measurement method
using a dial indicator to read the outside diameter of the other hub. Rotate the hub shafts together making sure the
axial spacing remains constant. Adjust equipment by shimming and/or moving. Repeat procedure for until
coupling is aligned to specifications. 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.
7. Tighten the locknuts per tightening torque specifications (Table 1). Tighten the locknuts of hub first, then those of
the center member to approximately ½ the stated torque value. Next repeat the process but tightening to the full
torque value. It is also recommended to apply torque on the locknut, not the bolt. Repeat procedure for the other
end of coupling. Re-check and tighten all fasteners after several hours of operation to ensure proper tightening.
*NOTE: Aligning the shafts as closely as possible at the time of initial installation will 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 flex disc pack.
*NOTE: Rotating equipment is potentially dangerous and should be properly guarded. The user is responsible for
compliance with all applicable safety codes and proper guarding.
Installation Instructions for 6F / 6S Composite Disc Couplings
13200 Sixth Avenue North ■ Plymouth, MN 55441-5509 ■ PHONE (763) 546-4300 PAGE
E-mail: zero-max@zero-max .com ■ Web address: www.zero-max.com 01/2006
1
//////////// ZERO-MAX
MOTION CONTROL PRODUCTS
Table 1
Axial Spacing, Tightening Torque and dimension Specifications
Model
6F18/6S18
6F22/6S22
6F26/6S26
6F30/6S30
6F37/6S37
6F45/6S45
6F52/6S52
6F60/6S60
6F67/6S67
6S77
6S90
6S105
6S120
Axial Spacing Specifications
D
See Diagram 1 (Dry values)
Inch mm Inch mm
0.276±0.010 7.01±0.25
0.306±0.012 7.77±0.30
0.306±0.015 7.77±0.38
0.460±0.017 11.68±0.43
0.522±0.023 13.26±0.58
0.582±0.030 14.78±0.76
0.646±0.037 16.41±0.94
0.768±0.043 19.51±1.09
0.860±0.050 21.84±1.27
1.012±0.053 25.70±1.35
1.134±0.060 28.80±1.52
1.446±0.070 36.73±1.78
1.536±0.083 39.01±2.11
Tightening Torque
17-19 in lb 205 Ncm 1.85 47.0
45-50 in lb 540 Ncm 2.25 57.2
45-50 in lb 540 Ncm 2.59 65.9
90-95 in lb 10.5 Nm 3.00 76.2
225-235 in lb 26 Nm 3.75 95.3
36-38 ft lb 51 Nm 4.50 114.3
36-38 ft lb 51 Nm 5.25 133.4
64-68 ft lb 89 Nm 6.00 152.4
64-68 ft lb 89 Nm 6.75 171.5
155-160 ft lb 215 Nm 7.75 196.9
305-315 ft lb 420 Nm 9.00 228.6
530-540 ft lb 725 Nm 10.50 266.7
530-540 ft lb 725 Nm 12 304.8
Table 2
Angular and Parallel Misalignment at Installation Specifications
Angular Misalignment
(per inch of hub diameter)
Rpm
Range
0-500
500-
1,000
1,000-
1,500
1,500 +
C= up to 30”
(759mm)
0.016 0.014 0.011 0.017 0.014 0.011
0.014 0.011 0.008 0.014 0.011 0.008
0.011 0.008 0.006 0.011 0.008 0.005
0.006 0.005 0.003 0.005 0.004 0.003
C= 30” up to 60”
(760mm to 1524mm)
C > 60”
(1,525mm)
C= up to 30”
(759mm)
Parallel Misalignment
(per inch of “C” dimension)
C= 30” up to 60”
(760mm to 1524mm)
Outside
Diameter
∅ D
C > 60”
(1,525mm)
13200 Sixth Avenue North ■ Plymouth, MN 55441-5509 ■ PHONE (763) 546-4300 PAGE
E-mail: zero-max@zero-max .com ■ Web address: www.zero-max.com 01/2006
2
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