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Bronze 650 High-strength brass bearings with embedded solid lubricant
Bronze 650 material is made of strong cast bronze based metal with special solid lubricants embedded. 
The base metal withstands high load and the solid lubricants provide self-lubrication. 
The bearing shows excellent performance without pre-lubrication under conditions of extreme high/low 
temperature with low speed. 
This material provides a maintenance-free bearing solution, particularly for high load, intermittent of oscillating motion.
This kind of bearing can be applied under dry, high temperature, high pressure, corrosive, water or other chemical environments when no oil can be introduced. 
It is widely used in automotive products line, water engineering...

The specification of this bushes as follows:
Material: High-strength and Graphite;
Load Capacity: 150N/mm2;
Temperature Limit: -100~+300;
Max. Sliding Velocit: 1.5M/s;
Friction Clef: 0.05~0.25;
PV Limit(dry): 3.3N/mm2*m/s;
PV Limit(oil): 16N/mm2*m/s.