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Broadly used for heavy load,low velocity application
DNB01 is based on high strength brass alloy which is processed through unique high-tech cast technique. The anti-abrasion surfaces of the bearing are drilled proportionally and embedded with solid lubricants. Due to its high mechanical strength and hardness, it¡¯s broadly used for heavy load, low velocity application. There are two kinds of solid lubricants available for different application, such as, SL-1 for general-purpose use, SL-4 for in-water or seawater use. 
l Self-lubricated and maintenance-free. 
l Suitable for heavy load, low speed application. 
l Exert excellent wear resistance where it¡¯s difficult of lubricating film to be formed during reciprocating, oscillating or frequently intermittent operation.
l Chemical attack resistant and corrosion resistant.
Features
l
Exhibits incomparable performance under a high load, low speed operation. Usable without lubrication
l
Excellent wear resistance in such places where an oil film is difficult to be formed due to reciprocating, oscillating motions and frequently intermittent operations
l
Remarkable resistance to corrosion and resistance to chemical attack
l
Available in various dimensions standard products

Service Range
Lub state Self-lub Periodical lub
Service temperature rangec -40~+300
P max.
N/mm2{ kgf/cm2}
29(98) { 296(1000)}
V max.
m/s{ m/min}
0.50{ 30} 1.00{ 60}
PV max.
N/mm2¡¤m/s{ kgf/cm2¡¤m/min}
1.65{ 1010} 3.25{ 1990}
Values in ( ) are of static allowable pressure. Indicates static allowable pressure either without sliding or when sliding with extremely low velocity less than 0.0017m/s {0.1m/min}.
* Values above are of when SL1 is used as solid lubricant
Mechanical Property
Density ---------- g/cm3 7.8
Tensile strength JIS Z 2241 N/mm2{ kgf/mm2} 755{ 77}
Tensile break elongat JIS Z 2241 % 12
Compressive strength ---------- N/mm2{ kgf/mm2} 345{ 35}(Note 1)
Impact strength JIS Z 2242 J/cm2{ kgfm/cm2} 19{ 1.9}
Hardness JIS Z 2243 ---------- HB210
Modulus of longitudinal elasticity JIS Z 2241 N/mm2{ kgf/mm2} 105,000{ 10,700}
Coefficient of linear expansion ---------- ¡Á10-5c-1 2.2
Thermal conductivity ---------- W/mc{cal/secccm} 87.8{ 0.21}
* Values above are central values, not standard values.
((Note 1) Compressive proof stress: 0.1%

Test data
graph
Journal rotating test (DNB01-SL1)
Dimensions of specimen: fai40¡Áfai50¡ÁL30
Mating material: S45C High-frequency quenching
Load: 24.5N/mm2 {250kgf/cm2}
Velocity: 0.033m/s {2.0m/min}
Testing time: 100h
Atmosphere: Room temperature in the air
Lubrication: Self-lub

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