Roper Pump N46-922 Bracket Assembly
The Roper N46-922 is a bracket assembly, the structural piece that ties a pump and its driver together and holds the two shafts in line. On a coupled pump package the bracket is what fixes the distance between the motor face and the pump, and it is also what determines whether the coupling runs true or spends its life absorbing a misalignment that was built in at assembly.
Bracket condition is easy to overlook because the part itself rarely wears out, but it does get damaged. A bracket that has been dropped, pried against during a motor change, or distorted by being bolted down onto an uneven base will hold the driver a fraction out of line, and that fraction is paid for by the coupling, the shaft seal and the outboard bearing rather than by the bracket. If a pump keeps eating seals or couplings for no obvious reason, checking the bracket and the alignment it produces is usually more productive than fitting yet another seal.
Key Features
- Genuine Roper Pump Company bracket assembly, part number N46-922
- Locates the pump and driver so the coupled shafts run in line
- Sets the spacing between the driver face and the pump
- Replaces a bracket that has been distorted, cracked or damaged in service
- Helps protect the coupling, shaft seal and outboard bearing from misalignment loads
Applications
- Coupled pump and motor packages
- Pump and driver mounting on a common base
- Repairs following coupling or bracket damage
- Rebuild work where alignment is being reset from scratch
- General industrial and transfer pump installations
Specifications
- Brand: Roper Pump Company
- Part Number: N46-922
- Part Type: Bracket assembly
- Function: Mounts and aligns the pump to its driver
- Installation: Shim and align after mounting rather than relying on the bracket alone
- Service Note: Manufacturer fitment is not published for this bracket, so confirm it against your own pump parts list
- Condition: New
Frequently Asked Questions
Q: Does the bracket alone guarantee alignment?
No. It gets the two machines close, but final alignment is still a job for a dial indicator or a laser tool with the unit bolted down on its actual base.
Q: What is soft foot and why does it matter here?
It is the rock you get when one mounting point sits higher than the others. Bolting the assembly down onto an uneven base twists it, so check for soft foot before you trust any alignment reading.
Q: How often should coupled alignment be rechecked?
After any work that separates the pump and driver, after a base or piping change, and periodically on units that run hot, since thermal growth moves the cold alignment.
Q: Can a cracked bracket be welded and reused?
It is rarely worth it. Welding distorts the machined mounting faces, and a bracket that is out of flat reintroduces the misalignment you were trying to cure.
Not sure this is the right part? Send us a Picture of the pump plate on your pump and the CLR Marine team will confirm the correct bracket assembly before you order.
CLRMarine
