The Meritor 03-122978-002 or 03122978002 is a cast unbalanced brake drum built for disc-wheel, outboard-mount axle applications rated at 22,500 lbs. capacity. At 16.50 in. brake diameter with a 7.00 in. brake width and 7.82 in. brake surface width, it is a Type R drum. Mounting dimensions include a 10-bolt pattern on an 11.25 in. bolt circle, 0.81 in. bolt holes, an 8.53 in. pilot diameter, and an overall depth of 10.63 in. Call us to confirm proper fitment for your axle configuration before ordering.
Features
Brake diameter: 16.50 in.; brake width: 7.00 in.
Brake surface width: 7.82 in.
Type R cast unbalanced drum
10-bolt hole pattern on 11.25 in. bolt circle; 0.81 in. bolt hole diameter
Pilot diameter: 8.53 in.; overall depth: 10.63 in.
Outboard mount, disc wheel; 22,500 lb. axle capacity rating
Tech Specs
- Type: Cast Unbalanced, Type R
- Brake Diameter: 16.50 in.
- Brake Width: 7.00 in.
- Brake Surface Width: 7.82 in.
- Overall Depth: 10.63 in.
- Pilot Diameter: 8.53 in.
- Bolt Hole Number: 10
- Bolt Circle Diameter: 11.25 in.
- Bolt Hole Diameter: 0.81 in.
- Wheel Type: Disc
- Drum Mounting: Outboard
- Axle Capacity: 22,500 lbs.
- VMRS Code: 013-017-006
