The Husqvarna 505416901 Ball Bearing 55 mm is a genuine OEM replacement component designed for the FS6800D, FS6600D, FS6600DT, and FS6600DJDT floor saws. As a factory-spec bearing, it meets Husqvarna's precision tolerancing requirements to maintain proper shaft alignment and smooth rotational operation within the drivetrain. Cross-reference part number 505416901 against your parts diagram to confirm the correct application before ordering. DHS Equipment supplies this part to help keep your equipment running at full capacity.
Key Features
- Precision-Toleranced OEM Construction — Manufactured to Husqvarna's exact dimensional and load-rating specifications, ensuring the bearing seats correctly and handles the rotational forces generated during heavy-duty floor sawing operations.
- Drop-In Shaft Fitment — Engineered to the correct 55 mm specification so it installs directly into the original bearing housing without modification, preserving proper shaft alignment from the first use.
- Broad Floor Saw Compatibility — Fits the FS6800D, FS6600D, FS6600DT, and FS6600DJDT floor saws, covering multiple variants in Husqvarna's professional walk-behind floor saw lineup.
- Sustained Drivetrain Integrity — A correctly functioning bearing keeps rotational components running true and smooth; a worn or seized bearing leads to vibration, heat buildup, and accelerated wear on surrounding drivetrain parts.
- Verified Genuine OEM Part — Supplied as an authentic Husqvarna component, not a generic substitute, so fit, material grade, and load capacity all align with the original design intent.
A ball bearing supports and guides rotating shafts, reducing friction between moving components while carrying both radial and axial loads. In a walk-behind floor saw like the FS6800D or FS6600D series, the drivetrain bearings endure significant stress from the blade's cutting forces and the saw's continuous operation on concrete slabs. When a bearing begins to fail, operators typically notice increased vibration, abnormal noise, or heat at the bearing location — symptoms that, if ignored, can cause shaft damage or unexpected downtime. Replacing a worn bearing promptly with the correct OEM-spec part restores smooth, stable operation and protects the integrity of surrounding components.
Part Details
| Part Number | 505416901 |
|---|---|
| Brand | Husqvarna |
| Part Type | Genuine OEM |
| Description | Ball Bearing 55 mm |
Compatibility & Fitment
| Name | Model |
|---|---|
| Floor Saw | FS6800D |
| Floor Saw | FS6600D |
| Floor Saw | FS6600DT |
| Floor Saw | FS6600DJDT |
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.
