Mining – Bendix Commercial Vehicle Systems BRAKE APPLICATION GUIDELINES User Manual

Page 19

Defi nitions

Movement of rock, ore, gravel and minerals between mine sites and delivery sites

High horsepower engines are typically used in this vocation

Typical vehicle routes are between three (3) and thirty (30) miles from start to stop

90% operation on-highway and up to 10% into sandy or muddy job site

100% load going and empty return

Typical Vehicle Types

Bottom Dump Trailer

Transfer Dump

Semi-End Dump

Hopper Trailer Combinations

General Requirements

• Anti-compounding air system
• Cam same operation for all steerable axle brakes and EB1807R brakes
• Air chamber bracket with gusset for all mining applications, see page 45
• Air chamber bracket assembly gusset and additional camshaft bracket support see page 45, attached to the axle housing

when the:

a. Brake centerline to air chamber centerline distance (BCCC dimension) is greater than 343 mm [13.5"]
b. Application use a type 30/36 or 36/36 Spring brake chambers.
c. Camshaft brackets with BCCC dimension of less than 8.12" does not require a gusset or additional support.
d. Super Single Tire (Wide Base)
Note: The above support can be supplied by BSFB or the vehicle manufacturer but

must be approved by BSFB Application Engineering Department.

• Applications for use in countries other than the USA and Canada must be reviewed by BSFB Application Engineering.
• Vehicle manufacturer is responsible for air system design, parking and stopping distance performance.
• For all S-cam brake models the camshaft input torque is limited to 2545 N•m [22,500 in-lbs].
• Applications on vehicles with fi xed or liftable auxiliary axles (tag or pusher) must be approved on an individual basis by the

BSFB Application Engineering Department, as auxiliary axles may impact the braking performance of the vehicle.

General Recommendations

• Cam same for all brake assemblies
• Dust shields for all applications
• Use Auxiliary retarders per TMC RP636
• Drum brake / Rotor material specifi cation per SAE J431. Drum / rotor surface fi nish 4.57 micrometer [180 max microinch]

and .38 mm [.015”] runout, when mounted on a hub rotated on bearings. See notes section for Minimum Drum Weight
requirements

• Brake air system balance per TMC RP632

Mining