The Meritor cast unbalanced brake drum, part number 03-122921-002 or 03122921002, is a drum-type AC brake drum sized at 15.00 in. diameter by 4.00 in. width, built for disc wheel applications. The brake surface width measures 5.09 in. and overall drum depth is 8.98 in. The 10-bolt mounting pattern uses a bolt circle diameter of 11.25 in. with bolt hole diameter of 0.81 in. Rated for axle capacities up to 14,600 lbs., this drum is suited to heavy-duty truck and trailer axle service. Call us to confirm proper fit for your specific axle and brake configuration before ordering.
Features
Brake drum diameter: 15.00 in.; brake width: 4.00 in.
Brake surface width: 5.09 in.; overall depth: 8.98 in.
10-bolt disc wheel mounting pattern
Bolt circle diameter: 11.25 in.; bolt hole diameter: 0.81 in.
Axle capacity rating: 14,600 lbs.
Drum type: AC cast unbalanced construction
Tech Specs
- Bolt Circle Diameter: 11.25 in.
- Bolt Hole Number: 10
- Bolt Hole Diameter: 0.81 in.
- Brake Diameter: 15.00 in.
- Brake Width: 4.00 in.
- Brake Size: 15.00 in. x 4.00 in.
- Brake Surface Width: 5.09 in.
- Overall Depth: 8.98 in.
- Drum Type: AC
- Type: Cast Unbalanced
- Wheel Type: Disc
- Axle Capacity: 14,600 lbs.
