Caterpillar 4E9311 Bolt

Bolt 4E9311 Caterpillar is not just a fixing element; This is the most important component that ensures the reliability and safety of heavy construction, mining and agricultural equipment Caterpillar. In complex mechanical systems, each component contributes to overall performance, and this bolt provides the strength of the connection and withstands extreme loads and harsh conditions. Thanks to strict production standards and innovative solutions, the 4e9311 bolt has become an indispensable tool for professionals around the world.

Production technology and the choice of materials

The excellent characteristics of the bolt 4E9311 are due to carefully selected material - doped steel of brand 8, which has high strength and shock viscosity. The production process begins with the quality control of workpieces: each workpiece is tested on specialized equipment to eliminate defects and compliance with the requirements of ASTM A325. Then the blanks are subjected to precision processing on CNC machines (numerical control), forming threads, heads and other elements with an accuracy of 0.005 mm. The key step is heat treatment: the bolts are hardened (860–880 ° C) and vacation (480–520 ° C) to increase hardness to 33–39 HRC and relieve internal stresses. The final stage is the application of the anti -corrosion coating - zinc (with a thickness of 8–12 microns) or chromium - to ensure corrosion resistance in conditions of high humidity and exposure to chemicals.

Technical characteristics and main advantages

Caterpillar 4e9311 bolts are produced in standard sizes: thread diameter 16 mm, length 60 mm and hexagonal head (corresponds to DIN 933), which allows you to easily install them using a standard wrench. Their main technical characteristics are impressive: the strength of the gap is up to 1000 MPa, the turnover limit of up to 800 MPa and the maximum breakdown of up to 25 kN. These properties allow the bolts to reliably attach heavy components, such as engines, transmissions and working organs of excavators, even in conditions of strong vibration and overload.

The first key advantage is their stable strength with prolonged use. Thanks to alloy steel and heat treatment, the bolts are not deformed and do not weaken even after 5,000 hours of work in difficult conditions. This eliminates the risk of destruction of connection and downtime.

The second advantage is ideal compatibility with the original Caterpillar equipment. The dimensions and thread of the bolts correspond to the brand standards, providing the perfect coincidence with the mounting holes of excavators (for example, 320 GC, 336), dump trucks (725, 730) and tractors (D6, D8). The installation is fast and simple: additional holes or adjustment is not required, which reduces the service time by 40%.

The third advantage is resistance to harsh conditions. The anti -corrosion coating prevents the appearance of rust in a humid environment (for example, when working near swamps or ponds), as well as when exposed to sand, dirt and chemicals (for example, in the mining industry). The bolts work reliably in a wide temperature range -from -40 ° C (in the northern regions) to +160 ° C (with direct contact with the engine) -without a decrease in productivity. Practical examples of application and operation

Bolts 4e9311 are widely used in critical renewals of Caterpillar equipment:

In the transmission: they fix crankcases and shafts of transmission, providing uninterrupted power transmission.

In the working bodies of excavators: they fix the dumps and levers of the bucket, withstanding the loads when extracting the rock or soil.

In the suspension of dump trucks: they fix the suspension elements, ensuring the stability of the machine when driving along an uneven surface. In operating conditions at a mining enterprise in Kuzbass, Russia, 4E9311 bolts demonstrated outstanding operational characteristics: when operating Caterpillar 730 dump trucks in conditions of constant vibration and contact with sand, the service life of fortresses increased by 60% compared to non -original bolts. This reduced the cost of replacement and increased the performance of the fleet by 15%.

Caterpillar warranty and support

Each 4E9311 bolt comes with a quality certificate detailing test results (strength, hardness, and corrosion resistance) and a batch number. Caterpillar provides a two-year or 2,000-hour warranty on this product. If a manufacturing defect is detected, the bolt will be replaced free of charge.

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