JDB-4 is based on cast iron Ht250 and embedded with solid lubricant. It is a typical cost saving product. Very good performance when under low load. Not suitable for middle and high load. A typical cost saving material, can substitute JDB-2 to be applied in the position without high requirements such as die guider, plastic injection machines etc.
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Material Structure and Composition
 Solid Lubricant Inserts


 
Cast Iron(HT250)
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Material Specification
Base Material Hardness Similar Foreign Code Application conditions
Ht250 HB180~230 International America
ASTM		 Germany Japan
JIS		 Low-Load, Low Speed
¡¡ class40 ¡¡ Fc250


Physical Characteristic
Load Capacity Friction Coef (¦Ì) Temperature max Speed Limit PVLimit(dry) PVLimit (oil)
70N/mm2 <0.18 400¡æ 0.5m/s 0.5N/mm2*m/s 1N/mm2*m/s

Mechanical Properties
Density
g/cm3		 Expansion Coefficient
X10-5/¡æ		 Impact tenacity
>KJ/m3		 Heat conduction Coefficient
W (m*k)		 Elongation
>%		 Pressure Resistant Strength
>N/mm2		 Elasticity Coefficient
KN/mm2
8.7 1.7~1.9 100~200 46~63 15 240 85~115


Specification Size

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