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JDB Solid BearingsZHEJIANG DLG TRANSMISSON TECHNOLOGY CO.,LTD(Zhejiang Fengli Drive Technology Co., Ltd.)

IntroductionMetallographicCharacteristics

The so-called non-oil means less fuel without refueling, the goal of our research is to ensure that bearing this condition also showed a good performance and extend its life as much as possible. Self-lubricating bearings basic principle is that the solid lubricant in the initial operational phase of the bearing surface due to mutual friction asked to form a transfer film and covered with a wear member to the final formation of the solid lubricant film in order to achieve the purpose of self-lubricating, it cut off direct contact between the workpiece and thus well protected against wear member and workpiece extending bearing life.

Chemical Composition

Steel Layer（45 Steel） Copper Layer（And Japan CAC304 Considerable）
Fe C Si Mn S.P Cu Fe Mn Ai Zn
Margin 0.45~0.50 0.17~0.37 0.50~0.80 ≤0.040 60~66 3~8 2.25~5 5~7.5 Margin

Mechanical Behavior

Bond Strength Of Steel And Copper（N/mm2） Copper Layer Hardness HB Steel Layer Hardness
Not heat-treated state Surface high-frequency quenching after the cylindrical surface
≥300MPa ＞210 0≤241HBS ≥45HRC

Solid Lubricants

Solid Lubricants Features  
Graphite+add Good wear performance and chemical stability,temperature limit 400℃ Suit for general machines and under atmosphere
PTFE+add Lowest friction coefficient and good water lubrication, temperature limit 300℃ Suit for water and seawater lubricant, such as ship

Technical Parameters

Grade JDB-1 JDB-2 JDB-22 JDB-23 JDB-24 JDB-25 JDB-1S
International Brands GB1776-87 ZCuZn25
Al6Fe3Mn3		 ZCuSn6Zn6Pb3 ZCuAl10Fe3 ZCuSu10P1 Steel+ ZCuSn6Zn6Pb3 HT250 GCr15
International ISO1338 GCuZn25
Al6Fe3Mn3		 GCuSn6Zn6Pb3 GCuAl10Fe3 - Steel+ CuSn6Zn6Pb3
Fe3Ni5		 - B1
Germany DIN G-CuZn25
Al5		 GB-CuSn5Zn5Pb5 GB-CuAl10Ni GB-CuSn10 Steel+ CuSn6Zn6Pb3Ni - 100Cr6
Japan JIS HBsC4 BC6 AIBC3 BC3 BC6 FC250 SUJ2
American ASTM/UNS C86300 C83600 C95500 C90500 C83600 Class40 52100
British Standard（BS） HTB2 LG2 AB1 PB4 LG2 - -

Material Composition And Performance

Grade JDB-1 JDB-2 JDB-22 JDB-23 JDB-24 JDB-25 JDB-1S
Chemical Composition CuZn25Al5Mn4Fe3 CuSn5Pb5Zn5 CuAl10Ni5Fe5 CuSn10Pb1 CuSn7ZnPb CuSn12Pb1 CuZn25Al5Mn4Fe3
Density g/cm3 8 8.9 7.8 8.9 8.8 8.9 8
Hardness HB ＞210 ＞70 ＞140 ＞80 ＞75 ＞95 ＞250
Tensile Strength N/mm2 ＞750 ＞200 ＞600 BC3 ＞270 ＞260 ＞800
Yield Strength N/mm2 ＞450 ＞90 ＞260 C90500 ＞130 ＞150 ＞450
Elongation % ＞12 ＞15 ＞10 PB4 ＞16 ＞8 ＞8
Linear Expansion Coefficient 1.9X10-5/℃ 1.8X10-5/℃ 1.6X10-5/℃ 1.8X10-5/℃ 1.8X10-5/℃ 1.8X10-5/℃ 1.9X10-5/℃
Working Temperature ℃ -40~+400 -40~+400 -40~+400 -40~+400 -40~+400 -40~+400 -40~+150
Max Load Capacity 100 60 50 70 70 70 120
Max Line Speed V 15 10 20 10 10 10 15
Max. PV value (lubrication) N/mm2*m/min 200 60 60 80 60 80 200
Permanent Compression Deformation 300N/mm2 ＜0.01mm ＜0.05mm ＜0.04mm ＜0.05mm ＜0.05mm ＜0.05mm ＜0.05mm

Standard and test method for bond strength of copper - copper

Steel-based copper alloy sleeve, the most critical technology is the combination of strength between steel and copper, the factory uses atomic diffusion of high-tech manufacturing, so the combination of high strength.
Steel-based Copper Alloy Sleeve (Multi-layer Tube Material) Technical Parameters 1, Material: outer steel 45 #, the inner high-strength brass; 2, Hardness: outer 190 ~ 240HB, the inner layer ≥ 210HB 3, combined strength of steel and copper: ≥ 300MPa 4, wear-resistant test contrast: seeking order. Test sleeve diameter, φ45 × φ55 × 60, set the inner ring oil tank, and a through-hole.