Description
Overview:
This genuine Husqvarna needle bearing is a small end bearing for two‐stroke engines used in Husqvarna and Partner disc cutters and chainsaws. It supports the gudgeon (wrist) pin at the connecting rod small end, reducing friction and wear at high RPM. Made with precision needle rollers and a robust metal cage for dependable service, it provides a precise width of 15 mm (0.59 in). Supplied as OEM 577 57 24-01, it replaces the older 503 25 56 01 for a direct, like‐for‐like fit. Ideal for keeping K750 and K760 disc cutters running smoothly, it also suits a wide range of Husqvarna chainsaws. As a Genuine Part, it maintains compatibility and reliability to factory standards.
Key Features:
- Genuine Husqvarna part: OEM 577 57 24-01 for correct specification and fit
- Direct replacement for older OEM 503 25 56 01 to simplify sourcing
- Precision width 15 mm (0.59 in) for accurate small‐end location
- Needle‐roller design reduces friction and heat for smoother running
- Durable construction for long service life under high engine speeds
- Helps minimise wear on the piston pin and connecting rod eye
- Straightforward installation with no modifications to standard engines
- Suitable for heavy‐duty disc cutters (e.g. K750, K760) and multiple Husqvarna chainsaws
- Stable performance in high‐temperature, oil‐fuel mix environments
- Supports consistent cutting/working performance and reduced downtime
Typical Applications:
Used during engine rebuilds or routine servicing of Husqvarna and Partner two‐stroke machines to restore smooth operation at the small end. Common for disc cutters in concrete and masonry work, site and rescue equipment, and chainsaws used in forestry, landscaping, and grounds maintenance. Ideal when replacing a worn or noisy small end bearing or when fitting a new piston and pin.
Also known as:
Small end bearing, needle roller bearing, gudgeon pin bearing, wrist pin bearing, small‐end needle cage, con‐rod small end bearing.
Fits Models:
268, 272XP, 357XP, 359, 362XP, 365, 365BT, 371K, 371XP, 372XP, 565, 570, 572XP, 575XP, 576XP, 576XP AutoTune, 590BFS, 590BTS, 61, K750, K760, K760 CUT-N-BREAK, K760 Cut-n-Break II, K760 Rescue, K770, K770 OilGuard, K770 Rescue, K770 VAC, K770VAC
Alternate Part Numbers:
577 57 24-01, 577 57 24 01, 577572401
Product Specifications
| L&S Part No. | 577 57 24 01 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 577572401 |
| Unit of Sale | 1 |
| Applications | 268, 272XP, 357XP, 359, 362XP, 365, 365BT, 371K, 371XP, 372XP, 565, 570, 572XP, 575XP, 576XP, 576XP AutoTune, 590BFS, 590BTS, 61, K750, K760, K760 CUT-N-BREAK, K760 Cut-n-Break II, K760 Rescue, K770, K770 OilGuard, K770 Rescue, K770 VAC, K770VAC |
| Machine Type | Disc Cutters, Chainsaws |
| Fits Brands | Husqvarna |
| Fits Models | K750 | K770 | 268 | 362XP | 365 | 371XP | 372XP | 565 | 576XP | 61 | 576XP AutoTune | K760 Cut-n-Break II | K770 OilGuard | K770 Rescue | K770 SmartGuard | K770 VAC | 590BFS | 590BTS |
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