Kobelt 5028-A, Owner'S Operation, Installation & Maintenance Manual

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KOBELT MANUFACTURING CO. LTD mnl5028-A.docx (rev A) 8
2 I
NSTALLATION
2.1 P
REPARATION
The foundation plate to support the brake caliper must be designed to withstand the maximum
braking forces generated by the brake caliper. The foundation must also be flat to ISO tolerance
grade IT8 and square to the brake disc. See Appendix A for key installation dimensions. The
brake pedestal must be designed to allow the mounting bolts to be inserted from underneath.
The rotating element should have bearings sufficient to carry the weight of the disc and also
resist the additional stress when the disc brake is applied.
The spigot that centers the brake disc must not be designed in such a way that it impedes the
thermal expansion of the disc.
Actuator ports are plugged to prevent contamination of the seals. Remove the plugs prior to
connection to the piping.
Brake discs are shipped with a light rust inhibitor applied to the surfaces. Remove the rust
inhibitor using solvent and a cloth prior to installation.
Any guarding around the brakes must provide enough room to allow full extension of the bake
actuators plus full pad wear adjustment.
2.2 B
RAKE
D
ISCS
The brake disc must be installed onto the rotating element before installing the caliper. Brake
discs must meet the following requirements:
Table 1: Brake Disc Requirements
MODEL 5000-SERIES
AXIAL RUN OUT IT9 (TIR)
1
RADIAL RUN OUT IT11 (TIR)
1
FLATNESS .003 in [.08 mm]
PILOT FIT H9/f8
SURFACE FINISH 63 micro inches [1.6 micrometers] RMS
SURFACE HARDNESS
Light Duty
2
HB135 minimum
Heavy Duty
3
HB235 minimum
1
International tolerance class. Allowable run out is proportional disc O.D.
2
Parking brakes and emergency brakes with stopping times of 10 seconds or less are considered
light duty.
3
Ventilated discs are exempted from this requirement