This  item  is used in  the gearbox part of the brake drum.
Dimension - 9.5 "  x  1 "
Weight  - 430 gm
 
Component Overview: Brake Drum Coupling (C36)
The C36 is likely a model or part number for a brake drum coupling or a specific part of a brake drum assembly used in the gearbox of industrial machinery (e.g., cranes, hoists, conveyors) or, less commonly, a vehicle with a drum brake system. The brake drum coupling connects the motor shaft to the gearbox or the gearbox to a driven shaft, allowing torque transmission while providing a braking surface for stopping the equipment.
 
Specifications:
Dimensions: 9.5" x 1"
Interpretation: The 9.5" likely refers to the outer diameter of the brake drum or coupling, which is relatively small compared to standard industrial brake drum couplings (100–600 mm, or ~4–24"). This suggests a compact design, possibly for light-duty machinery or a specific vehicle application.
The 1" could indicate the width of the drum, the bore diameter, or the thickness of the coupling sleeve/hub. Given the context, it’s most likely the width of the braking surface or the coupling’s axial length.
 
Weight: 430 grams (0.43 kg or ~0.95 lbs)
This is very lightweight for a brake drum coupling, which typically weighs several kilograms for industrial sizes. The low weight suggests a small, precision component, possibly made of a lightweight alloy or designed for a low-torque application (e.g., a small hoist, conveyor, or vehicle parking brake).
 
Material: Likely cast iron, cast steel, or an alloy (e.g., aluminum for weight reduction). Given the weight, an aluminum alloy or a thin-walled steel design is plausible.
 
Application: Used in the gearbox part of the brake drum, implying it’s either:
A coupling that connects the gearbox output shaft to a driven shaft, with an integrated brake drum.
A brake drum component (e.g., hub or sleeve) that interfaces with the gearbox and supports braking.
 
Possible Types:
Based on the dimensions and weight, the C36 could be:
Miniature Brake Drum Coupling:
A geared or pin-bush coupling with a small brake drum (9.5" diameter) for light-duty machinery.
Used in applications like small cranes, electric hoists, or conveyor systems.
 
Brake Drum Hub/Sleeve:
A component of the brake drum assembly that mounts to the gearbox shaft, with a 9.5" outer diameter for the braking surface and a 1" bore or width.
The low weight supports this, as hubs/sleeves are lighter than full couplings.
 
Vehicle Transmission Brake Component:
A small brake drum integrated into a vehicle’s gearbox or driveshaft, such as a parking brake (e.g., in trucks or off-road vehicles like Land Rovers).
The 9.5" diameter is feasible for a compact drum brake in such systems.
 
Technical Details:
Torque Capacity: Given the small size and weight, the C36 likely handles low to moderate torque (e.g., <100 Nm), suitable for light machinery or auxiliary braking in vehicles.
Bore: The 1" dimension could be the pilot bore or finished bore for the shaft. Standard couplings are supplied with pilot bores, requiring machining to fit specific shaft sizes (e.g., keyway added).
Brake Mechanism: Compatible with small electromagnetic, solenoid, or hydraulic brakes. The drum’s 9.5" diameter provides a modest braking surface, limiting stopping power to light loads.
Mounting: Likely bolted or keyed to the gearbox output shaft, with the brake drum accessible for brake shoe/pad engagement.
 
Applications:
Industrial:
Small electric hoists, conveyors, or machine tools where a compact brake drum coupling is needed.
Example: A gearbox in a light-duty crane with a 9.5" brake drum for stopping the load.
 
Automotive:
A parking brake drum integrated into a gearbox or driveshaft, as seen in some trucks or off-road vehicles.
Less likely for a Mercedes-Benz C36 AMG (which uses disc brakes), but possible for a niche vehicle or aftermarket modification.
 
Custom Machinery: The C36’s small size and weight suggest a specialized application, possibly in robotics, small winches, or precision equipment.