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| Brand Name: | REPLACE BRAND Metal-Polymer Bearings BEARINGS () |
| Model Number: | BUSHING TYPE FLANGED PLAIN SLEEVE |
| MOQ: | NEGOTIABLE |
| Price: | Competitively Priced vs , Provides Lubricating Bush |
| Payment Terms: | TT IN ADVANCE WESTERN UNION |
| Supply Ability: | Flanged Bronze Bushings, Bronze Thrust Washers, Self Lubricating Bronze Bushings |
Self-lubricating bushings are crucial components in hydraulic systems, designed to provide smooth and efficient operation while minimizing friction and wear. These bushings are coated with a lubricant that continuously releases a thin film of lubrication onto the contact surfaces, ensuring consistent and reliable performance.
The self-lubricating feature of these bushings significantly reduces the need for regular lubrication and maintenance, making them a cost-effective and convenient solution. They are also able to withstand high pressures and temperatures, ensuring reliable performance even in extreme operating conditions.
Additionally, these bushings are made from high-quality materials that are resistant to corrosion and wear, further enhancing their durability and lifespan. This makes them a suitable choice for a wide range of hydraulic applications, including pumps, valves, and cylinders.
In summary, self-lubricating bushings for hydraulic components offer a reliable and efficient solution for reducing friction and wear, minimizing maintenance requirements, and ensuring smooth operation of hydraulic systems.
www.bronzegleitlager.com professionally developed bearings can meet the special application requirements of the fluid power industry. Under the condition of high load and high speed, the BIMETAL BEARINGS solution is stable and reliable and supports most fluid power applications.
The aluminum bushing block serves several purposes, which include supporting the gear shafts, acting as a thrust bearing and providing a sealing function to ensure good contact with the faces of the gears. SICAL®3D alloy is highly effective under a wide range of load, speed, temperature and fluid viscosity conditions.
Sealing efficiency can be compromised under shaft loading due to internal leakage resulting from deformation and changes in geometry of the side face of the bushing block. The superior mechanical strength of SICAL®3D resists this deformation which significantly improves the volumetric efficiency of external gear pumps and motors.
Hydraulic pumps are used in hydraulic drive systems and can be hydrostatic or hydrodynamic. A hydraulic pump is a mechanical source of power that converts mechanical power into hydraulic energy (hydrostatic energy i.e. flow, pressure).
In the hydraulic market viiplus provides solutions for various applications.
The typical applications are:
The bushing blocks geometry plays the main role in the process of defining functional and
mechanical parameters related to the performance of the pump (high efficiency, low noise level,
assembly ability).
viiplus bimetal bushes are composed of two metal strips, in two different materials; the first is normally in steel, the second is normally constituted by an alloy containing copper, which when coupled with the steel strip acts as an internal covering. Furthermore, some sizes also have an external relubrication hole.
The special construction of these bushes means they have good resistance against wear, in particular at medium speed with a medium load, or at low speed with a high load.
The internal surface of the viiplus bimetal bushes can include different types of channels, so as to satisfy the various types of applications and lubrication conditions in which the bushes may be used.
Gear pumps (with external teeth) (fixed displacement) are simple and economical pumps. The swept volume or displacement of gear pumps for hydraulics will be between about 1 to 200 millilitres. They have the lowest volumetric efficiency ({displaystyle eta _{v}approx 90%} eta_v approx 90 % ) of all three basic pump types (gear, vane and piston pumps).
lined self-lubricating bearing also called bushing, dry bushing, bearing, bushing, coated bearing,SF-1 oilless bearing, liner metal polymer composite bearing and based plain bearing. This type of bush takes layer as sliding layer which makes products can perform very well under dry condition or oil condition.
These materiais consist of metal backing bonded to a porous bronze sintered layer with based polymer bearing layer.The metal backing provides mechanical strength, while the bronze sinter layer provides a strong mechanical bonding between the backing and the bearing lining,the based polymer offers exceptional low friction even under dry condition.
Improved energy efficiency with the low friction performance of -enriched overlay;
Extended service life with a high wear-resistant bronze layer;
Zero maintenance as self-lubricating bearings can operate dry without grease;
Greater reliability than bimetallic bearings by avoiding potential shaft/bearing seizure under boundary lubricated conditions and frequent stop/start operation;
Compact, lightweight designs with thin-wall bearing construction;
Reduced noise with no metal-to-metal contact between the bearing and the shaft;
Quick, simple assembly without expensive mounting tools.
Shafts in gear pumps. A low operating bearing clearance is essential for the high build-up of pressure and for low gear-pump leakage. To ensure a fault-free hydrodynamic operating state, the plain bearings must exhibit a bearing clearance tailored to the operating medium. The plain bearings come into direct contact with the operating medium. Aggressive media may be used, depending
on the application. The plain bearings must therefore offer high resistance to abrasion, good resistance to erosion, chemical compatibility and low swelling tendency.
Hydrodynamic operation
Sliding speed up to 10 m/s
High media compatibility
Low operating bearing clearance
High resistance to abrasion
High resistance to erosion
Good chemical resistance
Low swelling tendency
Low level of wear, even at high engine speeds and mixed friction
External gear pumps and motors mounted with hydraulic bushing blocks are widely used in many industries such as construction, agriculture, automotive and material handling equipment and chemicals.
Built with few components, these reliable, lightweight, robust pumps provide outstanding performance in volumetric efficiency. When assembled with low-friction bearings, they can provide fixed-flow efficiencies of greater than 95% to hydraulic systems.
Compared to standard aluminum alloys SICAL®3D offers:
High mechanical strength and when combined with high precision VIIPLUS machining, improved volumetric efficiency, especially in the medium pressure range
Low friction between the gear and the bushing block faces for reduced energy losses
Good bearing properties which, depending on the operating conditions, allow designs without metal-polymer bearings
High precision machining for reduced clearances and quiet operation
The vane rotor is supported by bearings at the front and back plates.
When mounted in the back plate, needle roller bearings can fail due to oil starvation, particularly after long periods of rest in different climatic conditions or during repeated stop-start operation.
To improve pump reliability, viiplus metal polymer cylindrical bearings underwent trials to determine the feasibility of replacing the needle roller bearings.
The rigorous, extensive testing program included operation at full pump power and different engine regimes from 500 to 7 000 rpm under boundary, mixed and hydrodynamic lubrication, stop/start operation and oil starvation.
The results of these tests confirmed that the metal polymer composite cylindrical bushings provide superior pump reliability thanks to their excellent tribological performance of under dry, marginal and hydrodynamic lubricated operating conditions.
We have years of experience with OEMs and Tier One suppliers to give them an innovative edge in the market. Viiplus engineer teams are here to help you to design the product you need at the lowest cost.
We have wide range of customer support including worldwide local supply and R&D.
Viiplus offers:
A wide variety of high performance bearings and solutions to give our customers an edge in the market.
Great customer support from Viiplus teams who provide technical support for any kind of bearing questions.
An incredible strategic partner with local support. We provide our customer with the right products that offer high quality at a lower cost. Worldwide network that makes on-site support anywhere in the world possible.
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