In the realm of metallurgical continuous casting, the machine train
support system plays a crucial role in ensuring the smooth and
efficient operation of the entire casting process. Among the
various components that make up this system, high-force brass
bushings stand out as a key element due to their unique properties
and functions.
High-force brass bushings are designed to withstand the extreme
forces and temperatures encountered during the continuous casting
process. Made from a high-grade brass alloy, these bushings exhibit
excellent strength, wear resistance, and thermal stability. This
allows them to effectively support and guide the moving parts of
the machine train, ensuring precise alignment and reducing the risk
of misalignment or damage.
The use of brass as the primary material for these bushings is due
to its exceptional combination of properties. Brass is a
copper-zinc alloy that offers excellent machinability, ductility,
and corrosion resistance. These qualities, combined with its high
strength and wear resistance, make brass bushings ideal for
applications in the metallurgical industry.
In addition to their material properties, high-force brass bushings
are also designed with precision and attention to detail. The
bushings are manufactured to exact specifications, ensuring that
they fit perfectly within the machine train support system. This
precision fit not only improves the overall performance of the
system but also reduces the need for maintenance and repairs.
Overall, high-force brass bushings are an essential component of
the metallurgical continuous casting machine train support system.
Their unique properties and precision design ensure that the
casting process runs smoothly and efficiently, minimizing downtime
and maximizing productivity.
High quality High Precision Oilless Bushing All Oiles Bronze
Bearing , Oil Free Bushings from China
Custom Oilless Bushes, Get Your Custom Quote Today!
CuZn25A16Fe3Mn4 self-lubricating graphite die bearings from China
The VSB-JDB-1 solid mount bearing is located in a brass matrix. A
high performance solid lubricant with solid graphite or MoS2
lubricants that interrupts the general lubrication of the bearings
with limitations of the oil film. In the process of use, through
the heat of friction to make the lubrication solid and the friction
of the shaft, the formation of oil, the co-lubrication of the
powders in excellent conditions.Its hardness is higher than average
copper sleeve one times, wear-resisting property is also one
times.At present, the product has been used in metallurgical
continuous casting machine, train support, steel rolling equipment,
mining machinery, ships, gas turbines and other high temperature,
high load, low speed heavy load and other occasions.
Material features
· can be used for a long time without maintenance;
· designed for high static load and dynamic load;
· it has a very low and stable friction coefficient and no
"adhesion" phenomenon;
· dust resistance, corrosion resistance, impact resistance and edge
load resistance;
· the metal substrate has good shock-absorbing capacity;
· can be used in a wide range of temperatures;
· suitable for reciprocating, rotating and oscillating situations
where startup is frequent and oil film is difficult to form;
· very low wear rate, long service life.
VSB-JDB-1 Technical Data
| ZCuSn6Zn6Pb3 |
| Sn(%) | Al(%) | Fe(%) | Pb(%) | Cu(%) |
| 6 | 0.002 | 0.05 | 6 | rest |
| (Tensile strength)σb (MPa) | ≥420 |
| (Elongation) δ5 (%) | ≥10 |
| Substrate material | CuSn6Zn6Pb3 | Maximum operating temperature ℃ | 300 |
| Ultimate dynamic load N/mm² | 100 |
| The coefficient of friction u | <0.16 | Maximum sliding speed m/s | dry | 0.4 |
| Basic hardness HB |
210~270
| oil | 5 |
Alloy material
| VSB-JDB-1 | VSB-JDB-2 | VSB-JDB-3 | VSB-JDB-4 | VSB-JDB-5 |
|---|
| VSB-JDB-2 | VSB-JDB-22 | VSB-JDB-23 |
|---|
| GB1776-87 | ZCuZn25
Al6Fe3Mn3 | ZCuSn6Zn6Pb3 | ZCuAl10Fe3 | ZCuSu10P1 | Steel+ ZCuSn6Zn6Pb3 | HT250 | GCr15 |
| ISO1338 | GCuZn25
Al6Fe3Mn3 | GCuSn6Zn6Pb3 | GCuAl10Fe3 | - | Steel+ CuSn6Zn6Pb3
Fe3Ni5 | - | B1 |
| DIN | G-CuZn25
Al5 | GB-CuSn5Zn5Pb5 | GB-CuAl10Ni | GB-CuSn10 | Steel+ CuSn6Zn6Pb3Ni | - | 100Cr6 |
| JIS | HBsC4 | BC6 | AIBC3 | BC3 | BC6 | FC250 | SUJ2 |
| ASTM/UNS | C86300 | C83600 | C95500 | C90500 | C83600 | Class40 | 52100 |
| (BS) | HTB2 | LG2 | AB1 | PB4 | LG2 | - | - |
Schematic diagram of lubrication principle
Matiance-free Plugged Graphite Bearings
| Solid bushing, bronze with lubricant plugs embedded, DIN 1850/ISO
4379, Maintenance-free |
| TECHNICAL DETAILS |
| Specific load capacity static | 150 [N/mm2] | Temperature strain | - 100 [°C] to + 300 [°C] |
| Specific load capacity dynamic | 100 [N/mm2] |
| Sliding speed | ≤ 0.3 to 1.0 [m/s] | Max. PV-value | 1.5 [N/mm² x m/s] |
| Friction value | 0.03 [µ] to 0.2 [µ] lubricated/dry | Hardness | 190-220 HB |
| MATERIALS |
| Support material | CuZn25Al5 | Other commonly used bronze alloys | CuAl10Ni, CuSn12Pb, CuSn7ZnPb |
| Sliding layer | Solid lubricant surface: app. 25-30% |
| TOLERANCE DETAILS |
| Housing Ø | H7 | Shaft tolerance | f7 or h6 |
| Bushing inner-Ø after mounting | Pls consult our sales engineers, standard delivered tolerance: r6
or E7 |
| SHAFT MATERIAL |
| The shaft hardness should be at least 70-100HB harder than the
bronze alloy. |
| Surface roughness ≤ Ra 0.8 |
| PROPERTIES |
| It fullfills the highest operational demands and is suitable for
shock loads. Depending on the alloy, it is corrosion-resistant and
also highly wear-resistant with a long life span. |
| RANGE OF APPLICATION |
| Cranes, mining machines, construction machinery, off-shore & marine
applications, steel plant, hydro power & hydro mechanical |
| MAINTENANCE |
| It is a maintenance-free bearing material, but an initial greasing
is mandatory for the “running-in”process. A lithium aging-resistant
grease should be used. |
| MOUNTING ADVISE |
| Housing | Chamfer min. 1.5 mm x 15-45°, for easy bushing alignment |
| Shaft | Chamfer 5 mm x 15°, for easy insertion of the shaft |
| For smaller diameters, the OD should be greased before pressing in. |
For larger diameters dry ice for freeze fitting should be used.
|
Product specialty
1.No need of oil supply device, oil injection hole, oil tank
processing oil supply device cost, processing cost, assembly cost
and other excess costs and time savings, can significantly reduce
the manufacturing cost.
2.The reduction in operating costs significantly reduces the amount
of lubricating oil used and the cost of equipment maintenance, and
also eliminates the risk of insufficient oil supply.
3.Shortening of design time oil-free can greatly simplify the
design and structure, reduce the cost and save the design time. In
addition, the use of self-lubricating bearings can also improve the
mechanical properties, prolong the service life and improve the
reliability and other aspects of significant results.
4.Oil recovery and environmental protection without waste oil
recovery treatment, conducive to environmental
protection.VSB-JDB(500#SP) self - embellishment bearing as a
mechanical industry parts, has a certain sense of use.A lot of work
has been done to make the mechanical drive run normally.The
bearings are divided into rolling bearings and sliding
bearings.General sliding bearing in high load mode of motion,
foreign matter mixing, temperature conditions, oil supply,
maintenance is not perfect, will cause hair.Under the harsh
condition that such a general plain bearing cannot be used, the
solid inlaid metal self-lubricating bearing's wear resistance and
hair resistance can give play to the due performance of the bearing
and realize the role of high performance and maintenance free of
machinery.
Our mode of transportation
Graphite self - lubricating bearings used in the field
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