EATON Airflex WSB 11210 WCSB3 Installation Operation and Maintenance E-CLCL-11001-E October 2013
9
Caution
Read these instructions thoroughly and review until
you fully understand the installation sequence before
proceeding with the work described in this section.
Failure to follow these instructions will result in
unreasonable exposure to hazardous conditions or
personal injury.
2.0 INSTALLATION
2.1 Alignment
Caution
Proper alignment is necessary to ensure that the fric-
tion discs track properly. Improper alignment will
result in excessive wear to the friction material
and mating surfaces, plus the gear and splined bore
of the friction disc assemblies. See Figure 2.
2.1.1 To aid in obtaining an accurate reading, a rigid bracket
should be fabricated for mounting a dial indicator
when checking alignment.
2.1.2 Bearing or machinery manufacturers may require
different alignment tolerances. Use the tightest of
those recommended.
2.1.3 Refer to the appropriate catalog information (available
upon request) for appropriate envelope dimensions,
mounting register diameters, mounting bolt circles
and positions for each specific tensioner.
2.1.4 The tensioner reaction member (such as the machine
frame) should have a machined register to allow
for mounting and alignment control of the tensioner.
The mounting surface should be designed to provide
full support of the face of the mounting flange/
cylinder (112), preventing deflection during operation.
2.1.5 For proper operation and service life, the tensioner
reaction member must be aligned to the shaft within
the limits shown in Table 2.
2.1.6 Refer to Table 3 for the setup dimension between
the tensioner mounting surface and the end of
the gear (dimension “A” on Figure 1). Gears should
be positioned to ensure that - when the tensioner is
mounted - the disc splines will not overhang the end
of the gear when components are in both new and
worn conditions. The gear (28) is typically bored and
keyed for a resulting Class FN2S interference fit
for inch shafting and ISO System S7h6 for metric
shafting. Contact Airflex Application Engineering for
specific recommendations.
2.2 Mounting
2.2.1 The WCSB3 must be mounted to a clean, rigid
surface with hardened flat washers and screws of
the grade, quantity, and size as listed in Table
4. Mounting to a properly aligned, rigid surface that
fully supports the face of the mounting flange/cylinder
(112) minimizes any deflection during operation and
helps to ensure that the friction discs will track
properly within the mounting flange/cylinder (112),
reaction plate (30) and pressure plate (13) assemblies.
WCSB3 Brakes
Table 2
Alignment Requirements
Perpendicularly
Concentricity (Parallel,
(Angular, TIR) of
TIR) of Shaft and Element
Mounting Flange to
Size
(Inches (mm))
shaft* (Inches (mm))
36WCSB3 0.010 (0,25)
0.019 (0,48)
*Perpendicularity measured near the O.D. of the mounting flange.
CORRECT
INCORRECT
Figure 2
Table 3
“A” Dimension on Figure 1, inches (mm)
Size 236 336 436
36WCSB3
n/a
n/a
6.00 (152.40)
