Figure 3
Correct Track
Incorrect Track
2.0
INSTALLATION
Use of commercial grade (Grade 2)
fasteners where Grade 8 fasteners
are specified may result in failure of
the fasteners and a sudden and
drastic reduction in brake torque.
Only qualified maintenance person-
nel should install, adjust or repair
these units. Faulty workmanship
will result in unreasonable expo-
sure to hazardous conditions or
personal injury.
Read these instructions thoroughly
and review until you fully under-
stand the installation sequence
before proceeding with the work
described in this section. Failure to
follow these instructions will result
in unreasonable exposure to hazard-
ous conditions or personal injury.
Do not paint the clamp tubes (12) or
the springs (34) as shown on Figure
1, as this may hinder the engage-
ment or disengagement of the brake.
NOTE: Airflex recommends guarding the
brake application. The guard should cover
the face and the entire outer diameter of the
unit.
2.1
Preparation
2.1.1
Figure 1 shows the relationship between the
brake mounting surface and the end of the
gear (dimension ".38" on Figure 1). The gear
is bored and keyed for a resulting Class
FN2S interference fit for inch shafting and
ISO System S7h6 for metric shafting.
2.1.2
Figure 2 show the mounting dimensions for
the brake to the machine frame or reaction
bracket.
20 DBB
(12) 0.656" (16.7)Ø
Mounting holes equally
spaced as shown on
22.000" (558.8) bolt circle.
Figure 2
5°
TABLE 2
Alignment Requirements
Brake
Size
Concentricity of
Shaft and Brake
in. (mm)
Perpendiculari
ty of
Mounting
Flange (1)
to Shaft in.
(mm)
20DBB
0.010 (0.25)
0.010 (0.25)
Perpendicularity referenced to outside diameter of
mounting flange from shaft center line (TIR).
DBB 8104 PDF format
3
© Copyright Eaton Corp., 1998. All rights reserved.
(Revised: January, 1998)
