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NTB-50BS 固体镶嵌润滑关节轴承 / Solid-lubricant-Embedded
NTB-50BS Series
Substrate characteristics
NTB-50BS to high strength copper alloy as a base material, according to the use condition in which a certain percentage of the cavities machined working surface and a solid lubricant filled, high-strength copper alloy provides a high load carrying capacity of the solid lubricant is can form a low friction. Under dry friction conditions we have designed one pre-lubricated bearing surface film can ensure the shortest possible time will be transferred to the solid lubricant and even pieces of an effective solid lubricant film.
Technical Parameters

· Long-term use without maintenance;

· Designed for high static load and dynamic bearer;

* Has a very low coefficient of friction and smooth, no phenomenon;

· Dust resistant, corrosion resistance, impact resistance and edge load capacity;

· Metal substrate with good shock absorption capacity;

· Can be used within a wide temperature range;

· Suitable for reciprocating, rotary and oscillating and other start-frequent and difficult to form a film of the occasion;

* Has a very low wear rate and long service life.

Material composition and performance table
Material Grade
650 650S1 650S2 650S3 650S5 650HP
Chemical Composition
CuZn25Al5Mn4Fe3 CuSn5Pb5Zn5 CuAl10Ni5Fe5 CuSn12 CuZn25Al5Mn4Fe3 CuZn32Al5Ni3
Density
8 8.9 7.8 8.9 8 8
Hardness HB
>210 >70 >150 >95 >250 >280
Tensile strength N/mm2 >750 >200 >600 >260 >800 >540
Yield Strength N/mm2 >450 >90 >260 >150 >450 >450
Elongation% >12 >15 >10 >8 >8 >0.3
Linear expansion coefficient
1.9x10-5/℃ 1.8x10-5/℃ 1.6x10-5/℃ 1.8x10-5/℃ 1.9x10-5/℃ 1.8x10-5/℃
Temperature ℃ -40~+300 -40~+400 -40~+400 -40~+400 -40~+150 -40~+150
Maximum dynamic bearing N/mm2 100 60 50 70 120 150
The maximum line speed m/min 15 10 20 10 15 15
The maximum PV value (lubrication)
N/mm2*m/min
200 60 60 80 200 200
Permanent compression deformation
300N/mm2
<0.01mm <0.05mm <0.04mm <0.05mm <0.005mm <0.005mm
Solid Lubrication economy
Solid lubricant
Property
Typical use
High purity graphite + additives
Good wear resistance and chemical stability, temperature <400 ℃
For general machinery, used in the atmosphere.
PTFE+Additive Low friction coefficient and good moist nature, <300 ℃

For water, seawater lubricated, such as ships, hydraulic radial gate, turbine,
Pharmaceutical and beverage machinery.

Chemical properties
Chemicals
Concentration % Temperature℃ 650# 650S1 650S2 650S3
Strong acid
5 20 × × × ×
Hydrochloric acid
5 20 ×
Hydrofluoric acid
5 20 × × × ×
Nitrate
5 20 ×
Sulfuric acid
5 20 ×
Phosphate
           
Weak acid
5 20 × ×
Acetic acid
5 20 × ×
Formic acid
5 20 × ×
Boric acid
5 20 × ×
Citric acid
           
Alkali
10 20 × × × ×
Ammonia
5 20
Sodium hydroxide
5 20
Potassium hydroxide
  20
Solvent
           
Acetone
  20
Carbon tetrachloride
  20
Ethanol
  20
Ethyl acetate
  20
Ethyl chloride
  20
Glycerin
           
Salt
    × × × ×
Ammonium nitrate
   
Calcium chloride
   
Magnesium chloride
   
Magnesium
   
Sodium chloride
   
Sodium nitrate
    × ×
Zinc chloride
   
Zinc sulfate
           
Gas
    ×
Ammonia
    × ×
Chlorine
    × ×
Carbon dioxide
    × × ×
Flue gas
   
Sulfur dioxide
    ×
Hydrogen sulfide
    ×
Nitrogen
   
Hydrogen
   
Lubricants and fuel
   
Paraffin
   
Gasoline
   
Kerosene
   
Diesel fuel
   
Mineral oil
   
Other
           
Water
   
Seawater
    ×
Resin
   
Hydrocarbons
   

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Address: Xitang Jiashan County, Zhejiang Industry and Trade Zone
Tel: 0573-84569666 84569668
Fax: 0573-84569688
E-mail: naitepm@163.com
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