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Suitable for low/middle load, middle velocity application
#500F is oilless bearing material, based on cast iron base with solid lubricants embedded therein.
l Self-lubricated and maintenance-free, suitable for low/middle load, middle velocity application.
l Exert excellent wear resistance where it's difficult of lubricating film to be formed during reciprocating, oscillating or frequently intermittent operation.
lIt's a cost-saving solution compared with copper alloy based bearings
Features
l The self-lub bearing performs great for low and middle loads and low velocity operations
l Excellent wear resistance at locations where proper oil film is hard to be formed due to reciprocating, intermittent or oscillating motion
l Cost lower than bronze alloy base bearing's
l Available in standard products with various sizes

Service Range
Lub state Oil free lub Periodical lub
Service temperature range¡æ -40~+400
P max.
N/mm2{ kgf/cm2}
5(73.5)
{ 51(750)}
8(73.5)
{ 82(750)}
V max.
m/s{ m/min}
0.15{ 9} 0.25{ 15}
PV max.
N/mm2¡¤m/s
{ kgf/cm2¡¤m/min}
0.50{ 306} 0.80{ 490}

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}.
Mechanical Property
Density ---------- g/cm3 7.1
Tensile strength JIS Z 2241 N/mm2 {kgf/mm2} 150{15}
Compressive strength ---------- N/mm2{kgf/mm2} 440{45}
Impact strength JIS Z 2242 J/cm2{kgfm/cm2} 1{0.1}
Hardness JIS Z 2243 ---------- HB160
Modulus of longitudinal elasticity JIS Z 2241 N/mm2{kgf/mm2} 78,000
{8,000}
Coefficient of linear expansion ---------- ¡Á10-5¡æ-1 1.2
Thermal conductivity ---------- W/m¡æ{cal/sec¡æcm} 50.2
{0.12}
* Values above are nominal values, not standard values.

Test data
graph
Plane reciprocating motion test
TEST conditions
Dimensions of specimen: sq40¡Ásq40¡Át20
Mating material: FC250 ground
Load: 5.9N/mm2 {60kgf/cm2}
Velocity: 0.12m/s {7m/min}
Stroke: 80mm
No. of reciprocations: 100,000cycle
Lubrication: Initial greasing only

Standard Product INDEX
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