The Husqvarna 502551201 PG680 Bottom Bearing Retainer Plate is a genuine OEM component designed for PG680, PG820, PG680RC, and PG820RC planetary floor grinders. This plate locks the bottom bearing assembly securely in position, and sourcing the correct OEM part ensures the bearing stack seats exactly as Husqvarna engineered it. Cross-reference part number 502551201 against your parts diagram to confirm fitment before ordering. DHS Equipment supplies this part to help keep your floor grinder operating at full capacity.
Key Features
- Precision OEM Bearing Interface — Manufactured to Husqvarna's exact tolerances, this retainer plate maintains correct bearing alignment and load distribution within the grinder's bottom drive assembly.
- Direct Structural Fit — Replaces the original plate with no modification to the mounting pattern or fastener positions, restoring the assembly to its factory configuration.
- Broad PG-Series Compatibility — Fits PG680, PG680RC, PG820, and PG820RC planetary floor grinders, covering both standard and remote-controlled variants in these two model families.
- Restored Grinding Head Stability — A correctly seated retainer plate prevents bearing movement under load, keeping the planetary head running true and maintaining consistent surface contact across the grinding pass.
- Genuine Husqvarna OEM Quality — Produced to the same specifications as the original part, ensuring material grade and dimensional accuracy that aftermarket alternatives may not replicate.
The bottom bearing retainer plate secures the lower bearing within the floor grinder's planetary drive system, preventing axial and radial movement during operation. When this plate is damaged or missing, the bearing loses its fixed seating point, which allows play to develop in the drive assembly — leading to uneven disc pressure, accelerated bearing wear, and reduced grinding consistency across the floor surface. Replacing a worn or cracked retainer plate restores the structural integrity of the bearing stack and keeps the planetary head running with the stability needed for flat, controlled results.
Part Details
| Part Number | 502551201 |
|---|---|
| Brand | Husqvarna |
| Part Type | Genuine OEM |
| Description | PG680 Bottom Bearing Retainer Plate |
Compatibility & Fitment
| Name | Model |
|---|---|
| Floor Grinder | PG680 |
| Floor Grinder | PG820 |
| Floor Grinder | PG680RC |
| Floor Grinder | PG820RC |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
