China wholesale Wheel Loader Broom Attachment - Shaft for wheel loader parts – CCMIC

shaft

Because there are many kinds of spare parts, we can’t display them all on the website. Please feel free to contact us for specific ones.

advantage

1. We supply both original and aftermarket products for you
2. From the manufacturer to the customer directly, saving your cost
3. Stable stock for normal parts
4. In Time Delivery Time, with competitive shipping cost
5. Professional and on time after service

packing

Carton Boxes, or according to clients’ request.

description

A shaft is a cylindrical object that passes through the middle of a bearing, a wheel, or a gear, but a small part of it is square. A shaft is a mechanical part that supports a rotating part and rotates with it to transmit motion, torque or bending moment. It is generally in the shape of a metal round rod, and each section can have different diameters. The rotating parts in the machine are mounted on the shaft.
The repair of the shaft head of large equipment after wear is a problem worthy of attention. When the shaft is made of No. 45 steel (quenched and tempered), if only surfacing treatment is used, internal welding stress will occur. Under heavy load or high-speed operation, cracks or even fractures may occur at the shaft shoulder . If stress relief annealing is used, it is difficult to operate, and the processing cycle is long, and the maintenance cost is high. When the shaft material is HT200, the use of cast iron welding is not ideal.
In China, repair welding, shaft sleeves, pitting, etc. are generally used for shaft wear. If the downtime is short and spare parts are available, new shafts are generally used. Some companies with higher maintenance technology will use brush plating and laser Welding, micro-arc welding and even cold welding, etc. These maintenance technologies require the purchase of expensive equipment and the hiring of skilled workers with high salaries. Some domestic small and medium-sized enterprises generally help repair high-value shafts through high-tech outsourcing, but they have to pay high maintenance costs. And transportation costs.
Repair technology
For the above repair technology, it is not common in European, American, Japanese, and Korean companies because the traditional technology has poor effects, while advanced repair technologies such as laser welding and micro-arc welding require high equipment and personnel, and the cost is large. Europe, Japan, and South Korea generally use Carbon nano polymer material technology and nano technology, on-site operation, not only effectively improve maintenance efficiency, but also greatly reduce maintenance costs and maintenance intensity. Because the metal material is a “constant relationship”, although the strength is high, the impact resistance and concession are poor.
Therefore, the long-term operation will inevitably cause the continuous increase of the fit clearance and cause the shaft wear. After realizing this key reason, the European and American new technology The polymer composite materials developed by research institutes not only have the strength and hardness required by metals, but also have the retreatability (variable relationship) that metals do not have.
Through the processes of “tooling repair”, “component correspondence”, “mechanical processing”, etc. , Which can ensure the size matching of the repaired part and the mating parts to the greatest extent; at the same time, the composite material itself has the comprehensive advantages of compression resistance, bending resistance, and elongation rate, which can effectively absorb the impact of external forces, and greatly resolve and offset the bearing The radial impact force of the shaft avoids the possibility of gaps, and also avoids the wear of the relative movement of the equipment due to the increase of the gap. Therefore, for the static fit between the shaft and the bearing, the composite material does not rely on “hardness” to solve the problem. The equipment wears out, but it relies on changing the relationship of forces to meet the operating requirements of the equipment.

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