Products Description
TL52/CG520/44-5 Brush Cutter Needle Bearing 10x14x15
Precision Needle Roller Bearing for 52cc 2-Stroke Engines
This 10x14x15 needle roller bearing is a critical component of the piston assembly on TL52, CG520, 44-5, and compatible 52cc brush cutters . Positioned at the small end of the connecting rod, it supports the wrist pin (piston pin), allowing the piston to pivot smoothly during the combustion cycle. Manufactured from high-grade bearing steel, this precision component reduces friction and handles the extreme loads and high RPM typical of 2-stroke brush cutter operation. Replacing a worn or damaged needle bearing during a top-end overhaul is essential to prevent engine knocking, vibration, or seizure, ensuring reliable performance for professional landscaping and grounds maintenance applications.
Technical Profiles & Materials
Precision Needle Roller Design – The bearing features a caged needle roller configuration with high load capacity and low friction for long, reliable service life. The 10mm inner diameter fits the wrist pin, while the 14mm outer diameter and 15mm width ensure a precise fit in the connecting rod small end.
High-Grade Bearing Steel Construction – Manufactured from durable, corrosion-resistant bearing steel that withstands extreme mechanical stress and high operating temperatures. The open, unsealed design allows for proper lubrication with two-stroke oil during assembly and operation.
Standard Metric Dimensions – Conforms to the metric 10x14x15mm specification (10mm ID, 14mm OD, 15mm width), which is a common standard for these 52cc engine platforms. This precision-machined bearing is also known under alternative codes such as HK1015 and TLA1015Z.
Broad Engine Compatibility – Designed specifically for 2-stroke engines based on the Mitsubishi TL52 design, including the 1E44F, BG520, and CG520 platforms. The 10mm wrist pin diameter is confirmed for the TL52 52cc engine platform.
Technical Specifications
| # | Parameter | Specification |
|---|---|---|
| 1 | Inner Diameter | 10 mm |
| 2 | Outer Diameter | 14 mm |
| 3 | Width | 15 mm |
| 4 | Bearing Type | Needle roller bearing (caged, open) |
| 5 | Material | High-grade bearing steel |
| 6 | Dynamic Load Rating | 6.8 kN |
| 7 | Static Load Rating | 8.8 kN |
| 8 | Max Operating Speed (Grease) | Up to 24,300 RPM |
| 9 | Operating Temperature Range | -20°C to +110°C |
| 10 | Applicable Load Direction | Radial |
| 11 | Weight | Approx. 6 grams |
| 12 | Installation | Press-fit into connecting rod small end |
| 13 | Common OEM Cross-References | HK1015, TLA1015Z |
Products Application
52cc Brush Cutter Engine Rebuild
Direct replacement during a top-end overhaul on TL52, CG520, 44-5, and compatible 52cc brush cutters. The bearing is a mandatory replacement when fitting a new piston, as a worn bearing can cause knocking, vibration, and engine seizure. Replacing it ensures correct clearance and prevents premature failure of the new components.
Piston and Connecting Rod Service
Essential component for engine restoration when the wrist pin bearing shows signs of wear, scoring, or damage. The bearing is pressed into the connecting rod small end and supports the wrist pin, enabling smooth piston rotation and efficient power transfer. It is included in many comprehensive cylinder and piston kits.
Preventative Maintenance for Professional Use
For high-hour brush cutters used in demanding landscaping and agricultural applications, replacing the wrist pin bearing proactively during scheduled servicing prevents catastrophic engine failure. The 10x14x15mm bearing is a standard component for 52cc engines from brands such as Mitsubishi, Ryobi, Husky, Tanaka, and Power Pro. Replacing this low-cost part protects the expensive connecting rod and crankshaft from damage.
Quality and Craftsmanship Details
Products Package
About Us
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FAQ
Q: How do I confirm this bearing fits my TL52 or CG520 engine?
A:Check your engine model and the wrist pin diameter (10mm). This 10x14x15 needle bearing fits TL52, CG520, 44-5, and most 52cc brush cutters with a 44mm piston, including the 1E44F, BG520, and Mitsubishi TL52 platforms. Verify the bore size and compare with your original parts before installation.
Q: What are the symptoms of a worn piston needle bearing?
A: Symptoms include knocking or rattling sounds from the upper engine area (especially under load), excessive piston movement when rocked side to side, loss of power, and eventually engine seizure. A worn bearing is a common cause of connecting rod damage and should be replaced during any top-end overhaul.
Q: Should I replace the bearing when replacing the piston?
A: Yes. The piston needle bearing is a wear component that should always be replaced when fitting a new piston or performing a top-end rebuild. The low-cost bearing protects the expensive connecting rod and crankshaft, and failure to replace it can cause premature wear on new components.
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