

Part number 434-621 is a bushing designed for installation in a sideplate of compatible sprayer systems. This bushing provides a bearing surface or acts as a spacer to reduce friction and wear between moving parts and the sideplate. It is compatible with 0528925N_2000_4000; Hydr M nad Hydra Pro Super; and Hydra M and Hydra Pro 2000_4000 models. Replacing a worn or damaged bushing restores proper clearances and prevents damage to the sideplate and rotating components.
| Part Number | 434-621 |
|---|---|
| Part Description | Bushing, Sideplate |
| Fits | 0528925N_2000_4000; Hydr M nad Hydra Pro Super; Hydra M and Hydra Pro 2000_4000 |
| Condition | New |
The 434-621 sideplate bushing is a cylindrical component designed to be installed in a sideplate of compatible sprayer systems. It is specifically compatible with 0528925N_2000_4000; Hydr M nad Hydra Pro Super; and Hydra M and Hydra Pro 2000_4000 models. This bushing serves as a bearing surface for a rotating shaft, such as a motor shaft or pump drive shaft, where it passes through the sideplate. By providing a low-friction surface, it reduces wear on both the shaft and the sideplate itself. It may also function as a spacer to maintain precise alignment or as a guide for linear motion components. The bushing is typically made from durable materials such as sintered bronze, steel, or engineered polymers that offer good wear resistance and may be self-lubricating. Over time, bushings can wear, causing the shaft to develop excessive play, leading to misalignment, noise, and increased wear on other components. Symptoms of a worn bushing include shaft wobble, unusual noise during operation, or visible wear on the bushing bore. Replacing a worn or damaged sideplate bushing with this genuine part restores proper shaft support and alignment. This ensures smooth operation and prevents damage to the sideplate and shaft. When replacing the bushing, it is important to ensure it is correctly pressed into the sideplate and that the shaft fits properly.
| Shaft support | Provides bearing surface for rotating shafts |
|---|---|
| Wear reduction | Prevents metal-to-metal contact |
| Alignment | Maintains correct shaft position |
| Excessive play | Shaft wobbles in bushing |
|---|---|
| Unusual noise | Grinding or squealing from bushing area |
| Visible wear | Bushing ID worn or out-of-round |
| Shaft damage | Shaft shows scoring from worn bushing |
Part number 434-621 is compatible with the following models. Always verify using your equipment's serial number and parts manual.
| Series | Specific Models |
|---|---|
| Manual Reference | 0528925N_2000_4000 |
| Hydra Series | Hydr M and Hydra Pro Super |
| Hydra Series | Hydra M and Hydra Pro 2000_4000 |
When replacing the sideplate bushing, inspecting these associated components can help ensure a complete repair.
Check for scoring or wear.
Inspect bore for damage.
If bushing is near a seal, check for wear.