Products Description
TL43/CG430/40-5/TL52/CG520/44-5 Crankshaft Needle Bearing
Precision Connecting Rod Bearing for 43cc–52cc Brushcutter Engines
The crankshaft needle bearing (also known as the big-end or connecting rod bearing) is a critical component in the engine assembly of CG430, CG520, TL43, TL52, 40-5, and 44-5 brushcutters and earth augers. This bearing sits between the connecting rod and the crankshaft journal, enabling the smooth conversion of linear piston motion into rotary motion to produce engine power . Replacing a worn bearing restores smooth operation, reduces engine noise, and prevents catastrophic engine failure. This high-quality aftermarket bearing is a direct replacement for OEM part numbers including 6202 and 6203, designed for 43cc–52cc 2-stroke engines.
Technical Profiles & Materials
Precision Needle Roller Design – Engineered with precision-ground needle rollers that reduce friction and heat at the connecting rod journal, supporting smooth rotation and efficient power transfer .
OEM-Spec Replacement – Directly replaces 6202 and 6203 series bearings on CG430, CG520, TL43, TL52, 40-5, and 44-5 engines, as well as most 43cc, 49cc, and 52cc 2-stroke powerheads .
Durable Steel Construction – Manufactured from high-grade bearing steel with hardened rollers and cage to withstand the high loads and RPM of professional brushcutter and auger use .
Essential Component for Rebuilds – Replacing the crankshaft needle bearing is a must during any engine overhaul, connecting rod replacement, or when restoring a seized or scored engine .
Technical Specifications
| # | Parameter | Specification |
|---|---|---|
| 1 | OEM Refs. | 6202, 6203, 6202RS, 6203RS |
| 2 | Compatible Models | CG430, CG520, TL43, TL52, 40-5, 44-5 |
| 3 | Engine Sizes | 43cc, 49cc, 52cc |
| 4 | Also Compatible | 2-stroke brushcutters, trimmers, earth augers |
| 5 | Bearing Type | Needle roller / Ball bearing (varies by model) |
| 6 | Material | High-grade bearing steel |
| 7 | Function | Connecting rod / crankshaft journal bearing |
| 8 | Installation | Press-fit; requires engine disassembly |
Products Application
Full Engine Overhaul & Restoration
When rebuilding a seized or high-hour CG430/CG520 or TL43/TL52 engine, the crankshaft needle bearing must be replaced to ensure proper crankshaft alignment and smooth rotation. This bearing is a standard component in comprehensive engine rebuild kits.
Engine Knock & Vibration Repair
If the brushcutter or earth auger engine exhibits excessive knocking, vibration, or unusual noise (especially under load), the crankshaft bearing may be worn. Replacing it restores smooth operation and prevents further damage to the crankshaft and connecting rod.
Connecting Rod Replacement
When replacing a damaged connecting rod, the crankshaft needle bearing must also be renewed. This bearing is commonly included in complete connecting rod and piston kits for CG/TL series engines.
Quality and Craftsmanship Details
Products Package
About Us
As a premier garden machinery parts supplier, Jiaxing Norsun Trading Co., Ltd. bridges global distributors with over 100 vetted China manufacturers. We streamline your B2B supply chain through strict quality control, flexible production, and factory-direct wholesale pricing. Partner with us for reliable, high-volume sourcing of precision-engineered outdoor power equipment components.
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FAQ
Q: How do I confirm which bearing fits my CG430/TL43 engine?
A:Check your engine model. Most CG430, CG520, TL43, TL52, 40-5, and 44-5 engines use 6202 or 6203 series bearings . Measure the old bearing or refer to your engine's parts diagram. This bearing fits 43cc–52cc brushcutter and earth auger engines.
Q: What are the symptoms of a worn crankshaft needle bearing?
A: Common symptoms include excessive engine knocking, unusual vibration, loss of power, and difficulty starting. A worn bearing may also cause metallic debris in the engine oil and could lead to catastrophic engine seizure if not addressed.
Q: Can I replace just the bearing or do I need a full engine kit?
A: You can replace just the bearing, but it is recommended to inspect the crankshaft and connecting rod for wear at the same time. Full engine rebuild kits are available that include the bearing, seals, gaskets, and piston rings for a complete overhaul. The bearing is commonly included in clutch removal tool kits for these engines.
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