JDB Solid inlaid lubricated bearings | Zhejiang SUNNOV Bearing Technology Co., Ltd.

JDB
Solid inlaid lubricated bearings

product description

JDB Solid inlaid lubricated bearings use high-strength copper alloy as the base material, and according to the working conditions, holes are machined on the working surface and filled with solid lubricants in a certain proportion.

High-strength copper alloys provide high load-carrying capacity and solid lubricants can form lower friction pairs.

Under dry friction conditions, we design a pre-lubricating film on the bearing surface to ensure that the solid lubricant is transferred to the counterpart in the shortest time and forms an effective solid lubricating film.

Material organization

①solid lubricating film

②solid lubricant

③Copper alloy base

Material correspondence table
Material code Codes	China GB1176-87	internationality ISO 1338	Germany DIN	Japan JIS	U.S. ASTM(UNS)	U.K. BS	France NF	Applicable
JDB650 High strength alloy copper	ZCuZn25Al6 Fe3Mn3	GCuZn25Al6 Fe3Mn3	DIN1709 G-CuZn25Al5	H5102 CAC304	B30-92 C86300	HTB2		High load, low speed, general use
JDB650 S1 High strength alloy copper	ZCuZn25Al6 Fe3Mn3	GCuZn25Al6 Fe3Mn3	DIN1709 G-CuZn25Al5	H5102 CAC304	B30-92 C86300	HTB2		Ultra high load, low speed, high load
JDB650 S2 Cast tin bronze	ZCuSn5 Pb5Zn5	GCuPb5 Sn5Zn5	DIN1705 G-CuSn5ZnPb	H5111 BC6	B30-92 C83600	LG2	CuPb5 Sn5Zn5	medium load, low speed
JDB650 S3 Cast aluminum bronze	ZCuAl9Fe4 Ni4Mn2	GCuAl10 FeNi5	DIN17656 G-CuAl10Ni	H5114 AlBC3	B30-92 C95500	AB2	CuAl10 Fe5Ni5	Medium load, medium speed, general use
JDB(HT250) cast iron	GB5675-85 HT250			FC250	ASTM Class40			medium load, low speed

Material composition and properties
Code	JDB650	JDB650 S1	JDB650 S2	JDB650 S3	JDB650 S4	JDB (HT250)	JDB (Gcr15)
material grade	CuZn25Al6Fe3Mn3	CuZn25Al6Fe3Mn3	CuAl9Fe4Ni4Mn2	CuSn5Pb5Zn5	CuSn12	HT250	Gcr15
density	8.0	8.0	8.5	8.9	9.05	7.0	7.8
hardness HB	>210	>250	>150	>70	>80	>190	HRC>58
tensile strength N/mm²	>750	>800	>800	>200	>260	>250	>1500
Elongation %	>12	>8	>15	>10	>8	>5	>15
coefficient of linear expansion 10^-5/°C	1.9	1.9	1.9	1.8	1.8	1.0	1.1
Operating temperature °C	-40~+300	-40~+150	-40~+400	-40~+400	-40~+400	-40~+400	-40~+400
Maximum dynamic load N/mm²	100	120	150	60	70	90	200
Maximum line speed m/min (Dry)	15	15	20	10	10	8	5
Max.PV N/mm² *m/min	200	200	60	60	80	40	150
Compression Set 300N/mm²	<0.01	<0.005	<0.04	<0.05	<0.005	<0.015	<0.002

solid lubricant
solid lubricant	characteristic	Typical use
SL1 High Purity Graphite + Additives	Good wear resistance and chemical stability, Operating temperature＜400℃	Applied to general machinery, used in the atmosphere
SL4 PTFE+additive	Very low friction coefficient and good water wettability, Operating temperature＜300℃	It is used in water and seawater lubrication, such as ships, hydraulic arc doors, hydraulic turbines, pharmaceutical and beverage machinery, etc.

● Can be used for a long time without maintenance;

● Designed for very high static and dynamic loads;

● Has a very low and smooth coefficient of friction, no "sticking" phenomenon;

● Has dust resistance, corrosion resistance, impact resistance and edge load resistance;

● The metal substrate has good shock-absorbing ability;

● Can be used in a wide temperature range;

● Suitable for occasions where reciprocating, rotating and swinging are frequently started and it is difficult to form an oil film;

● Has an extremely low wear rate and a long service life.

The so-called no oil supply means that there is no need to add oil or less oil. The goal of our research is to ensure that the bearing can still perform well under this working condition and prolong its service life as much as possible. The basic working principle of self-lubricating bearings is that in the initial running stage, the solid lubricant on the bearing surface forms a transfer film due to mutual friction and coats the opposite abrasive parts to form a solid lubricating film to achieve the purpose of self-lubricating. The direct contact between the workpieces thus protects the abrasive parts and prolongs the service life of the bearing and the workpiece.

Modern designs are placing huge demands on today's self-lubricating bearing materials. Maintenance-free is required even in severe extreme operating environments and maximum load conditions. With the continuous improvement of cost requirements, enterprises have higher and higher requirements for the reliability of equipment and plant operation. Metal self-lubricating bearings can meet maintenance-free and self-lubricating conditions under long-term use conditions, thus making it possible to design a reliable long-term self-lubricating system. Metal type self-lubricating bearing materials can be widely used in rotation, oscillation and linear reciprocating motion under high load and low speed conditions, and also suitable for occasions where traditional lubrication cannot be achieved or prohibited, or in special working conditions such as dust, impact Long-term and stable use under load or irradiation conditions.

Products are widely used in continuous casting and rolling mills, injection molding machinery, automobile molds, bridge machinery, water conservancy industry, steel rolling equipment, mining machinery, construction machinery, communication, steam turbines, manipulators, offshore oil platforms, etc.