The Husqvarna 539300123 Set Collar 1 Inch ID is a genuine OEM replacement designed for the FS3500G, FS4600G, FS6600D, FS6800D, FS8400D, FS9900DT, FS3500E, and PRO65G floor saws, as well as the TS250X, TS250XL, and TS250XS tile and masonry saws. As a direct-from-Husqvarna component, this set collar is manufactured to the exact dimensional tolerances required for proper shaft engagement and secure positioning on your machine. Sourced as a genuine OEM part, it delivers the fit and material integrity that aftermarket alternatives may not consistently match. DHS Equipment supplies this part to help keep your equipment operating at full capacity.
Key Features
- Genuine OEM Construction — Manufactured by Husqvarna to exact bore and collar tolerances, ensuring consistent shaft grip and secure locking without slippage under load.
- 1-Inch Inner Diameter — Precisely sized 1" I.D. matches the shaft specifications of compatible Husqvarna floor saws and tile saws for a drop-in installation with no machining or adjustment needed.
- Broad Cross-Family Fitment — Compatible with multiple FS-series floor saws including the FS3500G, FS4600G, FS6600D, FS6800D, FS8400D, FS9900DT, and FS3500E, as well as TS250X, TS250XL, and TS250XS tile and masonry saws.
- Shaft Positioning Integrity — A correctly seated set collar maintains critical component alignment on the shaft; a worn or loose collar can allow axial drift that leads to blade misalignment, vibration, or accelerated wear on adjacent components.
- Verified Part Number Reference — Cross-reference 539300123 against your machine's parts diagram to confirm the correct application before installation.
A set collar is a mechanical fastening ring that mounts around a rotating or stationary shaft to control the axial position of components such as blades, bearings, or drive assemblies. By clamping firmly to the shaft at a fixed point, it prevents unintended lateral movement that could disrupt cutting alignment or place stress on surrounding hardware. When a set collar loosens or wears, the components it anchors can shift during operation, resulting in uneven cutting performance, increased vibration, and potential damage to the shaft or adjacent parts — making timely replacement essential for maintaining accurate, consistent results on floor saw and tile saw applications.
Part Details
| Part Number | 539300123 |
|---|---|
| Brand | Husqvarna |
| Part Type | Genuine OEM |
| Description | Set Collar 1 Inch ID |
Compatibility & Fitment
| Name | Model |
|---|---|
| Floor Saw | FS3500G |
| Floor Saw | FS4600G |
| Floor Saw | FS6600D |
| Floor Saw | FS6800D |
| Floor Saw | FS8400D |
| Tile & Masonry Saw | TS250X |
| Tile & Masonry Saw | TS250XL |
| Floor Saw | PRO65G |
| Floor Saw | Pro65G |
| Tile & Masonry Saw | TS250XS |
| Floor Saw | FS9900DT |
| Floor Saw | FS3500E |
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.
