What is a bearing?
A bearing is a mechanical component used to reduce friction and wear between two moving surfaces in various devices. The main function of bearings is to provide smooth and fluid motion in machinery and prevent wear and damage to moving parts.
Bearings are commonly used in rotating shafts such as electric motors, industrial machinery, automobiles, and other mechanical devices. There are different types of bearings, such as rolling bearings (such as ball and cylindrical bearings) and plain bearings.
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In rolling bearings, balls or rollers are usually used between two moving surfaces to facilitate movement. In sliding bearings, the surfaces move directly on top of each other and instead of rollers, oil or grease is used to reduce friction.
In general, bearings play a vital role in the optimal operation of machinery and are designed to increase the useful life and efficiency of the devices.
Bearings in mining machinery (such as excavators, bulldozers, rock crushers, conveyors, loaders, etc.) play a very important role in bearing heavy loads, reducing friction and increasing the useful life of moving parts. These machines usually operate in harsh conditions, such as high dust, humidity, high pressure and variable temperatures, so their bearings must have special characteristics.
Bearing Characteristics in Mining Machinery:
1. High Load Capacity: These bearings must be able to withstand high radial and axial loads.
2. Contamination resistance: Their design usually includes seals to prevent dust and mud from entering.
3. Long life: The use of special alloys and proper lubrication increases durability.
4. Vibration and shock resistance: Mining machinery usually operates in harsh conditions and bearings must be able to withstand mechanical shock.
5. Continuous lubrication capability: Automatic or manual lubrication systems are often used to maintain stable bearing performance.
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Types of bearings used in mining machinery:
1. Tapered Roller Bearings: For combined loads (radial and axial).
2. Spherical Roller Bearings: Suitable for non-uniform and vibrational conditions.
3. Cylindrical Roller Bearings: For high radial loads.
4. Deep Groove Ball Bearings: In areas with lower loads and higher speed requirements.
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What is a bearing?
Bearing (or colloquially known among repairmen: bearing) is one of the most serious and common damages in internal combustion engines, which usually occurs due to a lack of engine lubrication or excessive pressure on the engine. This problem occurs when the clearance between the crankshaft and the bearings becomes less or more than the allowable limit and metal-to-metal contact occurs, which causes severe wear and knocking noise.
What are the main causes of bearing knocking:
1. Lack of engine oil or failure to change the oil on time
2. Use of inappropriate or poor-quality oil
3. Engine overheating
4. Excessive load or high-pressure driving
5. Impurities or water entering the engine oil
6. Oil pump failure
Symptoms of bearing failure What is it:
A metallic knocking or knocking sound from the bottom of the engine (usually gets louder as the engine revs up)
Low oil pressure
Oil light comes on
Severe engine vibration
In severe cases, complete engine lockup
Result and repair:
In the case of a bearing failure, it is usually necessary to completely disassemble the engine, grind the crankshaft, replace the bearings, and check the lubrication. In some cases, the engine may need a complete overhaul.
Kavir Machine Espadana Company
In addition to new machinery and parts, Kavir Machine Espadana Company also offers used road construction and mining machinery with warranty and after-sales service, which are as follows:
Everdigm hydraulic hammer, Loader, Excavator, Dump truck, Lift truck, Backhoe, Drill Wagon, Grader, Bulldozer and…, contact our experts at Contact to get advice and prices.
Kavir Machine Espadana Company is registered in Isfahan Province with the purpose of importing road construction and mining machinery, and is also the only exclusive representative of Hyundai Everdigm Hydraulic Hammer in the entire country. The company’s management, relying on its decades of experience in the field of mining contracting and road construction and civil engineering projects, has expanded its activities in the field of importing and selling road construction and mining machinery, parts and related equipment. Therefore, realizing the lack of quality machinery in the country and despite problems such as sanctions and customs issues, we have started importing machinery directly from reputable global factories. In this regard, we can mention the signing of a cooperation agreement with Sumitomo Japan in 2003, which resulted in the import of the first series of Komatsu zero-ton machines to Iran. We hope that by relying on God Almighty and with the aim of achieving the satisfaction of our dear customers, we will be able to take our firm steps further for the prosperity of our dear Iran.
Kavir Machine Espadana Company Communication Roads
Isfahan, 3rd kilometer of Zob Ahan Road, right side crossing