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Definition and function:
Automatic brake clearance adjustment arm, referred to as
self-adjusting arm, can automatically and timely adjust the
clearance increased by the wear of brake friction pads, so that the
brake clearance is always kept within the design range, ensuring
the normal operation and good performance of the brake system.
Working principle:
Braking process identification: When the vehicle brakes, the
adjustment arm will accurately record the various clearance changes
between the brake drum and the friction lining. The brake clearance
is mainly divided into theoretical brake clearance (normal
clearance between the brake drum and the brake shoe), elastic brake
clearance (working clearance to ensure safe and reliable braking)
and excess brake clearance (excessive clearance caused by friction
lining wear and other reasons).
Clearance adjustment action: When the friction pad wear causes the
brake clearance to exceed the set limit, the mechanical structure
inside the adjustment arm, such as the worm gear and other devices,
will start to work. The worm gear drives the camshaft to rotate
through a certain angle, thereby compensating for the clearance
increased by wear and restoring the brake clearance to the normal
range. After releasing the brake pedal, the adjustment arm will
return to the initial state and prepare for the next brake
adjustment.
Part Name | Truck Parts Automatic Brake Clearance Adjustment Arm | Part Number | 3503205-A0E 3502205-A0E 3502210-A0E 3503210-A0E |
Packing | Carton,Wooden Box, Pallet | Quality Standard | 100% Tested |
Quality Certification | ISO,CCC,GSO,CE,SGS,TUV | Warranty | 6 months |
MOQ | 5 Pieces | Payment Terms | L/C, T/T, Western Union,Paypal |
Weight | 3.500 kg | Stock | In Stock |
Advantages | Fast delivery, simple operation, long service life | Payment | Online Payment |
Structural composition:
►Rack tooth groove (control arm): used to control the theoretical
brake clearance value to ensure that the initial clearance of the
brake system under normal conditions meets the design requirements.
►Clutch: combined with the thrust spring, it can identify the
elastic clearance and excess clearance value during the braking
process, and realize the rapid on-off start-stop of the force
transmission system, ensuring that the adjustment arm adjusts the
clearance at the right time.
►Thrust spring: assists the clutch to work, senses the force
generated by the clearance change during the braking process, and
provides power support for the clearance adjustment.
Worm gear: on the one hand, it plays the role of transmitting the
braking torque, transmitting the force of the brake pedal to other
components of the brake system; on the other hand, when the brake
is returned, it drives the camshaft to rotate according to the
clearance change to adjust the brake clearance.
►Housing and accessories: play the role of protecting internal
components, transmitting torque and maintaining system stability,
ensuring that the adjustment arm can work normally under various
working conditions.
Advantages:
►Stable braking performance: always maintain a suitable brake
clearance, so that the braking effect of the vehicle is consistent
and stable, avoiding problems such as brake fatigue caused by
excessive clearance or friction plate drag and jamming caused by
too small clearance, and improving the reliability and safety of
braking.
►Reduce maintenance costs: The automatic adjustment function
reduces the frequency of manual regular inspection and adjustment
of brake clearance, reducing vehicle maintenance costs and driver
labor intensity.
►Extend component life: It helps reduce wear of brake system
components and extend the service life of brake components, air
compressors, brake cylinders and other components in the compressed
air system.