Description
Overview:
The Grooved Ball Bearing 20x47x15 is a genuine Stihl OEM component designed for heavy-duty chainsaw use. Made from hardened bearing steel with precision-ground races, it supports smooth, low-friction rotation under high speeds and loads. This deep groove ball bearing keeps key rotating assemblies running true, helping to protect the engine and drivetrain from premature wear. It is engineered for a precise interference fit and long service life in demanding conditions. Suitable for large professional saws such as the Stihl 088 and MS 780, it is equally at home in high-output cutting environments where reliability matters. Dimensions: 20 mm (bore) x 47 mm (outside diameter) x 15 mm (width), which is approximately 0.79 in x 1.85 in x 0.59 in. Stihl Part No. 9523 003 4386.
Key Features:
- Genuine Stihl OEM part for assured fit and performance
- Deep groove design for high radial load capacity and stable running at high RPM
- Precision dimensions: 20 mm x 47 mm x 15 mm (approx. 0.79 in x 1.85 in x 0.59 in)
- Hardened steel construction for durability and wear resistance
- Helps reduce vibration and friction for smoother operation
- Resistant to shock loads typical of professional chainsaw use
- Consistent quality and tolerance control for reliable alignment
- Straightforward replacement for worn or noisy bearings
- Replaces previous Stihl part number 9523 003 4385
- Suitable for maintenance schedules aimed at extending engine life
Typical Applications:
Used as a primary rotating support bearing within large Stihl chainsaws. Commonly fitted to crankshaft and associated rotating assemblies where a deep groove ball bearing is specified. Ideal for professional forestry, milling, and heavy felling work where long service intervals and smooth running are essential.
Also known as:
Deep groove ball bearing 20x47x15, main bearing, crank bearing, chainsaw ball bearing, 20-47-15 bearing, engine bearing, replacement bearing for large Stihl saws.
Fits Models:
088, MS 780, MS 880, MS 881
Alternate Part Numbers:
9523 003 4385, 9523-003-4386, 95230034386, 95230034385
