solid bushing, bronze with lubricant plugs embedded, Maintenance-free

The solid lubricant plugs are made of Graphite and are applicable in dry environments.

MATERIALS

• Support material: CuZn25Al5Mn4Fe3 
• Sliding layer Solid lubricant graphite surface: app. 25-30%
• Other commonly used bronze alloys: CuAl10Ni, CuSn12Pb, CuSn7ZnPb

RANGE OF APPLICATION

Cranes, mining machines, construction machinery, off-shore & marine applications, steel plant, hydro power & hydro mechanical

Solid bronze bushing, Maintenance-heavy Bronze bushing, oil or grease lubrication is necessary.
VIIPLUS designs lubrication grooves to reduce maintenance to a minimum.

Additional Alloys: CuZn25
Al6Fe3Mn3, CuSn7ZnPb (RG7), CuSn10, CuSn12, CuPb10Sn, CuSn6Zn6Pb3, CuZn25Al5, CuSn5ZnPb (RG 5)

VIIPLUS is capable to fine tune the performance of the bronze bearings with the right choice of bronze alloy bearing material and groove design.

Bronze bushings are a maintenance-bond bearing material. Also the type of movement, oscillation or continuous rotation, will determine the choice of groove type.They need to be greased regularly, otherwise the bushing as well as the shaft will wear out very fast. It is necessary to have a sufficient distribution of grease in the high load area between the shaft and the bushing.

Oil & Grease Groove Bronze Bushings

Any of our standard stock sizes of Sleeve Bushings are adaptable to grooving and graphite plugging.

Types of lubricant groove:

Axial, Oval,Double Oval, Circular，Figure of eight, One and a half figure of eight, Double figure of eight, Duplex figure of eight

Oilless bushing advantages
1. Flexible, simple, convenient design, wide range of use;
Fuel supply system in the mechanical design is a work, time-consuming device, using solid self-lubricating bronze bearings do not need to consider when designing refueling device, save gas devices, as well as for a wide variety of special occasions, solid self-lubricating bearing design into various shapes, so as to meet the needs of a variety of special occasions, using solid self-lubricating bearings, can significantly reduce the mechanical maintenance, oil and other expenses.
2. No oil can be used;
Since solid lubricant is greater than the linear expansion coefficient of metal matrix, so when to run solid self-lubricating bearings, the oil film will be transferred to the grinding and implemented on a self-lubrication, so solid self-lubricating bearings can be used in the place where is hard to go and can’t go or grease, even in the case of low speed and high load, also can have good lubrication effect.
3. Low use cost;
The traditional mechanical design, in a certain operating time, want to often come on maintenance, check the oil, the oil supply device was clear, the body itself and the surrounding environment pollution caused by regular gas, result in an increase in maintenance costs, realize self-lubrication, not only can realize the environment clean and tidy, and greatly reduce the cost of the use of lubricating oil.
4. Under the condition of high load and low rotating speed, it can give play to superior performance;
Solid self-lubricating bearing is made of centrifugal casting high strength alloy brass substrate, have the effect of bearing load, with special formula with good self-lubricating properties of graphite lubricant, self lubricating effect, so it’s a combination of their respective advantages, even in high load, low speed, can produce superior performance.
5. Excellent wear resistance can be developed in places where the oil film is difficult to form, such as reciprocating motion, rocking motion and frequent starting and stopping;
The arrangement principle of solid self-lubricating bearing lubricants is to ensure that there are lubricants in each part of the grinding part in the process of operation, so the arrangement of lubricants must be determined according to the direction of the movement of the grinding part.
6. Superior drug resistance and corrosion resistance;
The lubricant of the solid self-lubricating bearing is made of the wear-resisting materials such as graphite, PTFE and molybdenum disulfide with special formula. It has stable molecular structure, and the metal matrix can be selected according to different metals with different drug resistance and corrosion resistance. Therefore, the solid self-lubricating bearing has superior drug resistance and corrosion resistance.
7. The bushing bearings cost is more competitive, compared with similar products, the service life is longer, the maintenance is less, the replacement cycle is long, the performance is good.

Solid bronze bearings are mounted on a matrix of colliers brass. A high performance solid lubricant with graphite or MoS2 solid lubricants. It breaks through the general bearing lubrication by oil film limitations. In the process of use, through the friction heat to make the solid lubrication and shaft friction, the formation of oil, powder co-lubrication excellent conditions, not only protect the shaft from wear, and make the solid lubrication characteristics eternal. 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.