DNB04 Solid lubricants-embedded aluminum bronze bearing-DU BUSH, spring bush, bronze bushing, SLIDING BEARING, CHINA BEARING, THRUST WASHER, THRUST WASHER, needle bearing

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PRODUCT

Excellent heat resistance and corrosion resistance DNB04 is oilless bearing material, based on aluminum bronze alloy base with solid lubricants embedded therein. l Can be applied under water or seawater. l Excellent heat resistance. l Can be applied in extreme-low temperature condition due to no brittleness at low temperature.
Features	lUsable in seawater lOutstanding heat tolerance lUsable at extremely low temperature due to no brittleness at low temperature

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	7.6
Tensile strength	JIS Z 2241	N/mm²{kgf/mm²}	590{60}
Tensile break elongation	JIS Z 2241	%	15
Compressive strength	----------	N/mm²{kgf/mm²}	240{24}(Note1)
Impact strength	JIS Z 2242	J/cm²{kgfm/cm²}	25{2.5}
Hardness	JIS Z 2243	----------	HB160
Modulus of longitudinal elasticity	JIS Z 2241	N/mm²{kgf/mm²}	108,000 {11,000}
Coefficient of linear expansion	----------	×10^-5^-1	1.6
Thermal conductivity	----------	W/m{cal/seccm}	58.6 { 0.14}

* Values above are nominal values, not standard values.
(Note 1) Compressive strength: 0.2%

Test data

Underwater journal oscillating test

Mating material:	SUS304
Load:	15.7N/mm²{160kgf/cm²}
Oscillating cycle:	60cpm
Oscillating angle:	±10°
No. of oscillation:	100,000cycle (27.8h)
Atmosphere:	in seawater (adapt quasi-seawater) Temperature in seawater 20±5

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