Meritor part number 03-122971-002 or 03122971002 is a cast unbalanced brake drum sized 12.25 in. diameter by 7.50 in. wide, designed for inboard mounting on spoke wheels. The brake surface width measures 7.88 in., pilot diameter is 7.00 in., and overall depth is 9.00 in. The drum uses a 6-bolt pattern on an 8.25 in. bolt circle, with dual bolt hole diameters of 0.53 in. and 0.66 in. This is an S-drum type rated for axles up to 16,000 lb. capacity. A genuine Meritor part sold by Pro Gear and Transmission. Call us to confirm proper fit for your application.
Features
Brake drum size: 12.25 in. diameter x 7.50 in. width
Brake surface width: 7.88 in.
Pilot diameter: 7.00 in., overall depth: 9.00 in.
6-bolt pattern, 8.25 in. bolt circle, dual bolt hole diameters: 0.53 in. and 0.66 in.
Inboard drum mounting, spoke wheel type
S-drum type, cast unbalanced, axle capacity rating: 16,000 lb.
Tech Specs
- Brake Size: 12.25 in. x 7.50 in.
- Brake Diameter: 12.25 in.
- Brake Width: 7.50 in.
- Brake Surface Width: 7.88 in.
- Pilot Diameter: 7.00 in.
- Overall Depth: 9.00 in.
- Bolt Circle Diameter: 8.25 in.
- Bolt Hole Diameter: 0.53 in. / 0.66 in.
- Bolt Hole Number: 6 / 6
- Drum Type: S
- Type: Cast Unbalanced
- Drum Mounting: Inboard
- Wheel Type: Spoke
- Axle Capacity: 16,000 lb.
- VMRS Code: 013-017-006
