Description
Overview:
This bearing housing assembly is a genuine Stihl part for curved‐shaft trimmers, providing smooth, reliable support for the cutting head drive. Built with a robust polymer housing and a steel bearing and shaft, it is designed to withstand routine use and vibration. The unit fits directly into the cutting head end of compatible machines such as the Stihl FS 38 and FS 45, restoring stable rotation and reducing wear. Supplied as a complete assembly, it replaces tired or noisy components in one go and helps extend overall tool life. The housing diameter is 25 mm (approximately 1 inch) for a precise fit. OEM reference: 4144 640 5900. Genuine Stihl part for assured compatibility, fit and performance on the listed models.
Key Features:
- Genuine Stihl replacement part for consistent fit and reliability
- Supplied as a complete assembly: bearing, housing and shaft
- 25 mm (approximately 1 inch) diameter for correct location in the cutting head
- Replaces earlier Stihl numbers 4140 640 1400 and 4140 640 1402
- Durable polymer body with steel bearing and shaft for long service life
- Helps reduce vibration and improve smooth running of the cutting head
- Direct-fit on listed models; straightforward installation with basic hand tools
- OEM No. 4144 640 5900 for easy identification and parts matching
Typical Applications:
Used when the cutting head wobbles, rattles, or runs rough, or after impact damage. Ideal during routine servicing to restore smooth rotation and reduce vibration on domestic and light trade trimming work, edging, and general grass maintenance.
Also known as:
Lower bearing housing, cutter head bearing block, output shaft housing, spindle housing, trimmer line head bearing, trimmer bearing, trimmer housing, trimmer shaft assembly.
Fits Models:
FS 36, FS 38, FS 40, FS 40 C, FS 44, FS 45, FS 45 C, FS 45 L, FS 46, FS 46 C, FS 50, FS 50 C, FSE 60, FSE 71, FSE 81
Alternate Part Numbers:
4144-640-5900, 41446405900, 4140 640 1400, 41406401400, 4140 640 1402, 41406401402
Product Specifications
| L&S Part No. | 4144 640 5900 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 41446405900 |
| Unit of Sale | 1 |
| Applications | FS 36, FS 38, FS 40, FS 40C, FS 44, FS 45, FS 45C, FS 45L, FS 46, FS 46C, FS 50, FS 50C, FS36, FS38, FS40, FS40C, FS44, FS45, FS45C, FS45L, FS46, FS46C, FS50, FS50C, FSE 60, FSE 71, FSE 81, FSE60, FSE71, FSE81 |
| Machine Type | Grass Trimmers, Strimmers |
| Fits Brands | Stihl |
| Fits Models | FS36, FS40, FS44 | FS38, FS45, FS46 | FS40, FS50 | FSE60 | FSE71 | FSE81 |
