The Husqvarna 503255301 Needle Bearing is a genuine OEM replacement component designed for a wide range of Husqvarna Construction core drill motors and power cutters, including the DM700, DM650, DM340, DM280, DM230, DM1PACE, DMS280, K970, K960, K950, K4000, and K3000. As a direct OEM part, this needle bearing is manufactured to the precise dimensional and load-bearing tolerances Husqvarna specifies for these machines. Cross-reference part number 503255301 against your parts diagram to confirm the correct position before ordering. DHS Equipment supplies this part to help keep your equipment performing at spec.
Key Features
- OEM Dimensional Accuracy — manufactured to Husqvarna's exact bore, outer diameter, and roller specifications, ensuring correct load distribution and rotational clearance for the bearing seat it occupies.
- Drop-In Replacement — designed to seat directly into the original housing without reworking or shimming, matching the interface geometry of the factory-installed component.
- Broad Husqvarna Construction Fitment — compatible with DM-series concrete core drill motors (DM230, DM280, DM340, DM650, DM700, DM1PACE, DMS280) and K-series power cutters (K950, K960, K970, K3000, K4000).
- Sustained Power Transmission — a correctly functioning needle bearing maintains smooth, low-friction rotation of the shaft or spindle it supports; a worn or seized bearing causes vibration, overheating, and accelerated damage to surrounding components.
- Genuine Husqvarna OEM Part — sourced directly from Husqvarna's construction parts catalog, carrying the same part number (503255301) used by authorized service centers worldwide.
A needle bearing uses a series of thin, cylindrical rollers arranged around a shaft to carry radial loads with minimal friction across a compact cross-section. In high-demand construction equipment like core drill motors and power cutters, these bearings support rotating shafts under significant side loads and continuous operating cycles. When a needle bearing wears, develops flat spots, or loses its cage integrity, the result is increased friction, shaft play, audible noise, and — if left unaddressed — failure of the shaft or housing it supports.
Part Details
| Part Number | 503255301 |
|---|---|
| Brand | Husqvarna |
| Part Type | Genuine OEM |
| Description | Needle Bearing |
Compatibility & Fitment
| Name | Model |
|---|---|
| Concrete Core Drill | DM700 |
| Concrete Core Drill | DM280 |
| Concrete Core Drill | DM1PACE |
| Concrete Core Drill | DM230 |
| Concrete Core Drill | DM650 |
| Concrete Core Drill | DMS280 |
| Concrete Core Drill | DM340 |
| Power Cutter | K960 |
| Power Cutter | K4000 |
| Power Cutter | K970 |
| Power Cutter | K950 |
| Power Cutter | K3000 |
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.
