Sliding bearing seat manufacturer

When connecting the threads of the sliding bearing seat, it is generally necessary to tighten the nut to apply a certain pre tightening force to the bolt. The purpose of pre tightening is to increase the stiffness and tightness of the connection and improve its anti loosening ability.

1. Pre tightening of threaded connections: It is divided into loose connections and tight connections according to whether the threaded connections are tightened during assembly. For the control of preload force, bolt connections can generally be controlled based on experience, while important bolt connections usually require the use of torque wrenches or fixed torque wrenches for control.

2. Anti loosening of threaded connections: Threaded standard components used for connections can meet self-locking conditions. After tightening the nut, the frictional force between the nut and the supporting surface of the connected component also helps prevent the nut from loosening. Thread locking devices are designed to prevent relative movement of threaded pairs and can be classified into three types based on their principles:

(1) Force locking and anti loosening: Various structural measures are adopted to prevent the frictional force in the threaded pair from fluctuating with the external load of the connection, maintaining a large anti loosening friction resistance torque.

(2) Form locking and anti loosening

(3) Damaging the non removable anti loosening of the threaded pair: After tightening the nut, methods such as punching, welding, and bonding are used to make the threaded connection non removable. After tightening the nut, use a punch to punch 2-3 points; After welding and tightening the nut, the sliding bearing seat size will be spot welded with the nut and bolt; Adhesive is applied to the surface of the threaded joint with adhesive. After tightening the nut, the adhesive can self cure and has a good anti loosening effect. These methods are generally used for connections and are simple, reliable, and anti loosening.

feature

Strong bearing capacity: It operates well under high-speed and heavy load conditions. When using liquid friction sliding bearings, the internal friction force in the fluid replaces the friction force on the metal surface, which can effectively avoid wear and prolong the service life. It is suitable for equipment such as rolling mills, hydro generators, etc. that can withstand huge impact and vibration loads or extremely heavy loads.

High operating accuracy: stable operation, no noise, can ensure precise support position. When the liquid friction bearing is designed reasonably and used correctly, it can achieve high rotational accuracy. It is commonly used in equipment such as precision grinders that require particularly precise support position for shafts.

Good buffering and damping: The oil film on the working surface of liquid friction sliding bearings has the functions of vibration reduction, buffering, and noise reduction, which can effectively absorb vibration and reduce impact. It is suitable for occasions such as automotive engines that require buffering of vibration and impact.

Small radial size: suitable for situations where the shaft is densely packed or the diameter of shaft type rotating parts is small, it has advantages when the radial size is limited, such as multi roll rolling mills and other equipment.

There are various structural forms, including integral, sectional, and self-aligning structures. The integral structure is simple and cost-effective, but the clearance cannot be adjusted after the shaft sleeve wears out, making it inconvenient to assemble and disassemble. It is suitable for low-speed, light load, or intermittent mechanical work; Split type assembly and disassembly are convenient, and it is easy to adjust the bearing clearance after bearing wear, making it widely used; The self-aligning type can adapt to the deformation of the shaft, ensure good contact between the shaft neck and the bearing shell, and is used in situations where the shaft neck is long, the main shaft stiffness is small, or the two bearings are not easily aligned.

application field

In the industrial field, it is widely used in metallurgy, mining, transportation systems, environmental protection equipment and other industrial scenarios. For example, rolling mills in the metallurgical industry require sliding bearing seats to withstand enormous rolling forces and impact loads; Sliding bearing seats are also commonly used in crushers and conveyor systems in mines to adapt to harsh working environments and heavy load requirements.

In the field of electric power, sliding bearing seats are used to support rotors, reduce friction and wear, and ensure smooth operation of equipment such as water turbines and generator sets in hydropower stations. The hydroelectric generator of the Three Gorges Dam adopts high-performance sliding bearing seats for its rotor bearings to ensure long-term stable operation under enormous hydraulic forces.

In the field of transportation, sliding bearing seats are used in the traction motors and bearings of railway locomotives, which can work well under high-speed and heavy load conditions, ensuring the safe operation of trains. In addition, sliding bearing seats are also used in the crankshaft bearings and other parts of some car engines to improve the performance and reliability of the engine.

In the field of mechanical processing, high-precision machining equipment such as precision grinders and boring machines require extremely high precision for shaft support. The high precision and stability of sliding bearing seats can meet the needs of these equipment and ensure machining accuracy.