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Analysis of the advantages and disadvantages of imported hydraulic wrenches and domestic hydraulic w

source:Industry News release time:2021-11-13 Article author:Rosit Popular:Air band saw

　　 AN21-550 Pneumatic nut runner

　　In the industry of hydraulic wrenches, the general customer will have the idea that imported hydraulic wrenches are better than domestic ones?

　　Why is this? Because many people think that although imported products are expensive, they have good quality and advanced technology, and the products produced can last a long time.

　　Although the price of domestic products is cheap, because the technology is relatively backward for imported ones, more and more people choose imported hydraulic wrenches. Next, let's take a look at the advantages and disadvantages of imported hydraulic wrenches and domestic hydraulic wrenches.

　　Imported hydraulic wrench

　　1. Most of the imported brands are relatively large, so the after-sales service part is relatively complete, but because the after-sales service is too strict, many customers' problems cannot be solved in time.

　　2. Imported hydraulic wrench sealing system adopts imported sealing ring, which can withstand long-term work under 70Mpa pressure, slow aging, and relatively long service life.

　　3. Imported hydraulic wrench has the characteristics of titanium alloy material, light weight, small size, large torque, etc. The unit weight can provide the maximum torque output, ensuring durability, reliability and safety.

　　4. The safety factor of imported high-pressure hose is 4 to 1, the working pressure is 70Mpa, the burst pressure is 280Mpa, the exterior is made of thermoplastic polyurethane material, and the interior is designed with 4 layers, of which 2 layers are high-strength steel wires.

　　Domestic hydraulic wrench

　　1. Domestic hydraulic wrenches are generally made of alloy steel and are heavy. The actual weight of a 36000Nm hydraulic wrench is about 50kg. Although the steel reaction arm has a certain strength, it is brittle and prone to breakage at the weaker link.

　　2. Domestically produced hydraulic wrenches are relatively mature in terms of sealing technology, but working at pressures above 60Mpa will cause unstable performance and other problems, which are very prone to damage, leading to oil leakage in the hydraulic wrench working head and short service life.

　　3. The outer layer of the high-pressure hose of the domestic hydraulic wrench is rubber wrapped, the safety factor is less than 2, and the internal two-layer design. The easy aging of the rubber leads to the extremely short service life of the tubing. If it cannot be replaced in time, it is very easy to cause safety hazards.

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