SELF-LUBRICATION BEARINGS -JDB SERIES

 

 

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Introduction 

 

The solid-inlaid copper-graphite bearing (JDB) is a new type of lubricated bearing that combines the characteristics of metal bearings and oil-free lubricated bearings. It uses a metal base material, onto which solid lubricants are distributed in appropriate proportions and sizes according to operating conditions. It features high load capacity, impact resistance, high temperature resistance, and strong self-lubrication. It is particularly suitable for heavy loads, low speeds, reciprocating or oscillating movements, and other applications where lubrication and oil film formation are difficult. It is also resistant to water and other acidic corrosion and erosion. No oiling or maintenance is required during operation, significantly improving mechanical performance and reducing maintenance costs for the bearing and equipment. It can also be lubricated with oil. Oil grooves and oil holes can be machined in various shapes and orientations to achieve the desired effect, depending on the operating conditions. In short, this is a fully customizable product.

Advantages Of JDB series

 

Suitable for long-term maintenance-free use;
 High precision, strong load-bearing capacity, excellent wear resistance, and long service life;
 Available for arbitrary dimensions, conveniently meeting various size and shape requirements;
 Highly stable friction coefficient, no "sticking";
 Resistant to dust, moisture, impact, and side loads;
 Suitable for use over a wide temperature range;
 Suitable for applications with frequent starting and stopping, such as rotating, reciprocating, and oscillating          motions, where oil film formation is difficult.

 

 

 

Main Application of JDB Series
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Engineering machinery, rubber machinery, auto mold, hydraulic cylinders, large gear boxes, metallurgical machinery, trains bracket, rolling equipment, mining machinery, shipbuilding, machinery, construction, turbines, electrical equipment, water conservancy construction.

 

 

series commonly used models and matreials

 

JDB-1 JDB-1 JDB-2 JDB-2 JDB-2 JDB-2 JDB-2
a2bbe7b8-d11f-4921-8ce4-8303867d8558 a2bbe7b8-d11f-4921-8ce4-8303867d8558 product-134-121 product-134-121 product-134-121 product-134-121 product-113-113
Material Name High strength brass Brass Aluminum bronze Aluminum bronze Yorcalnic Yorcalnic

Tin bronze

Material CuZn25AlFe6Mn3 CuZn38 CuAl9Fe4 CuAl10Fe3 CuAl9Fe4Ni4Mn2 CuAl10Fe4Ni4

CuSn5Zn5Pb5

Density 7.8 8.5 7.8 7.8 7.8 7.8

8.9

Hardness HB≥210 HB≥70 HB≥110 HB≥110 HB≥160 HB≥165

HB≥60

Tensile strength 750N/mm² 295N/mm² 530N/mm² 540N/mm² 630N/mm² 580N/mm²

200N/mm²

Yield strength 450N/mm² 95N/mm² 210N/mm² 200N/mm² 250N/mm² 240N/mm²

90N/mm²

Elongation rate ≥8 ≥30 ≥15 ≥15 ≥16 ≥10

≥13

Max temp 300℃ 300℃ 350℃ 350℃ 380℃ 400℃

400℃

Linear expansion 19×10⁻⁶/K⁻¹ 20×10⁻⁶/K⁻¹ 17.5×10⁻⁶/K⁻¹ 17.5×10⁻⁶/K⁻¹ 17.5×10⁻⁶/K⁻¹ 17.5×10⁻⁶/K⁻¹

18×10⁻⁶/K⁻¹

Friction coef μ <0.16 μ <0.16 μ <0.155 μ <0.155 μ <0.155 μ <0.155

μ<0.15

Max load 100N/mm² 70N/mm² 80N/mm² 80N/mm² 90N/mm² 90N/mm²

60N/mm²

Max speed -dry 0.5m/s 0.5m/s 1.5m/s 1.5m/s 1.5m/s 1.5m/s

2m/s

Max speed -  lubrication 5m/s 5m/s 8m/s 8m/s 8m/s 8m/s

10m/s

Max pv -  dry 1.8 N/mm².m/s 1N/mm².m/s 1.2N/mm².m/s 1.2N/mm².m/s 1.2N/mm².m/s 1.2N/mm².m/s

1N/mm².m/s

Max pv -lubrication 3.8 N/mm².m/s 1.65 N/mm².m/s 2.5 N/mm².m/s 2.5 N/mm².m/s 2.5 N/mm².m/s 2.5 N/mm².m/s 1.65N/mm².m/s
Characteristic
High load, low speed, high hardness Medium load, low speed, easy to process Medium load, medium speed, good strength Medium load, medium speed, good strength Medium load, medium speed, corrosion resistance Medium load, medium speed, corrosion resistance Medium load, Medium speed, Low friction coefficient
 
JDB-2 JDB-2 JDB-2 JDB-3 JDB-4 JDB-5 JDB-5
product-120-120 product-120-120 product-120-120 product-121-121 product-121-121 product-115-116 product-119-116
Material Name Tin bronze Tin bronze Tin bronze

Carbon steel

+brass/bronze

Cast iron Carbon steel Bearing steel
Material CuSn6Zn6Pb3 CuSn10P1 CuSn12 According to the selected material HT250 45# GCr15
Debsity 8.9 8.9 8.9 According to the selected material

7.8

7.8 7.8
Hardness HB≥60 HB≥90 HB≥75 According to the selected material HB180~230 HRC45~50 HRC55~60
Tensile strength 200N/mm² 310N/mm² 270N/mm² According to the selected material 250N/mm² 600N/mm² 1500N/mm²
Yield trength 90N/mm² 170N/mm² 150N/mm² According to the selected material 250N/mm² 355N/mm² 500N/mm²
Elongation rate ≥13 ≥2 ≥5 According to the selected material ≥1 ≥15 ≥10
Max temp 400℃ 400℃ 400℃ According to the selected material 400℃ 350℃ 350℃
Linear expansion 18×10⁻⁶/K⁻¹ 18×10⁻⁶/K⁻¹ 18×10⁻⁶/K⁻¹ According to the selected material 11×10⁻⁶/K⁻¹ 11.5×10⁻⁶/K⁻¹ 12×10⁻⁶/K⁻¹
Friction coef μ<0.15 μ<0.145 μ<0.145 According to the selected material μ<0.18 μ<0.17 μ<0.17
Max load 60N/mm² 60N/mm² 70N/mm² According to the selected material 60N/mm² 150N/mm² 250N/mm²
Max speed-Dry 2m/s 2m/s 2m/s According to the selected material 0.5m/s 0.1m/s 0.1m/s
Max seed-lubrication 10m/s 10m/s 10m/s According to the selected material 5m/s 3m/s 3m/s
Max pv-dry 1N/mm².m/s 1N/mm².m/s 1N/mm².m/s According to the selected material 0.8N/mm².m/s 2.0N/mm².m/s 2.5N/mm².m/s
Max pv-lubrication 1.65N/mm².m/s 1.65N/mm².m/s 1.65N/mm².m/s According to the selected material 3N/mm².m/s 3.8N/mm².m/s 3.8N/mm².m/s
Characteristic Medium load, Medium speed, Low friction coefficient Medium load, Medium speed, Low friction coefficient Medium load, Medium speed, Low friction coefficient According to the selected material High load, Low Speed, High temperature, Cost savings High load, Low Speed, Not be used in the case of acid-base High load, Low Speed, Not be used in the case of acid-base

 

More materials can be customized

 

Lubricant Features Typical Application
Graphite+add

product-164-160

Excellent resistance against chemical attacks and low friction. Temp limit 400℃ Suite for general machines and under atmosphere
PTEE+PTEE+add

product-188-188

Lowest in friction and good of water lubrication.

Temp limit 260 ℃

Ship,hydraulic turbine,gas tubine etc.

                     

Types of solid self-lubricating bushes
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