German parker coupling parker model parker price

parker couplings contain an elastic compound with pre-compressed rubber, providing additional strength and extending service life. This coupling accommodates all types of misalignment. The hub material is high-strength aluminum alloy, which is lightweight and corrosion-resistant. The rubber component is primarily used for vibration damping, ensuring smooth and quiet power transmission, thereby protecting the drive source and driven machinery. Installation is simple; since the rubber part is a split insert, it can be installed by insertion after shaft alignment. Elastic couplings use parallel or spiral slit systems to accommodate various misalignments and transmit torque precisely. Elastic couplings generally offer good performance and price advantages, making them the preferred choice in many practical applications of stepper and servo systems. The one-piece design enables elastic couplings to transmit torque with zero backlash and offers maintenance-free operation. Elastic couplings mainly consist of two basic series: spiral slit type and parallel slit type.

parker coupling features

Due to their simple structure, low cost, and ability to transmit large torques, they are often used when rotational speed is low, there is no impact load, shaft rigidity is high, and alignment is good. Flange couplings (also known as flanged couplings) connect two flange-type half-couplings using bolts. Each half-coupling is connected to its respective shaft using keys to achieve shaft connection, transmitting torque and motion. Flange couplings have a simple structure, are easy to manufacture, have lower costs, operate reliably, and are easy to assemble, disassemble, and maintain. They can transmit larger torques and ensure high alignment accuracy between the two shafts. They are generally used in shaft transmissions with stable loads, high speeds, or high transmission precision requirements. Flange couplings do not possess radial, axial, or angular compensation capabilities. If alignment accuracy between the connected shafts cannot be guaranteed during use, the service life, transmission precision, and transmission efficiency of the coupling will be reduced, causing vibration and noise. For rigid couplings, depending on the magnitude of the transmitted torque, all bolts on the flange can be fitted bolts, or half can be fitted bolts and the other half ordinary bolts. Rigid couplings are lightweight, have low inertia, and extremely high sensitivity. In practical applications, rigid couplings are easy to maintain and resistant to oil and corrosion. In high-speed environments, they can compensate for relative displacement generated by high-speed operation. Of course, if relative displacement can be successfully controlled, they can also perform excellently in servo systems. [1 Structural forms of rigid couplings: A rigid coupling consists of two half-couplings with grooves on their end faces and an intermediate disc with teeth on both sides. Since the teeth can slide in the grooves, it can compensate for relative displacement between the two shafts during installation and operation. Rigid couplings also include two shaft sleeves and a central steel shell, where the central steel shell is the torque-transmitting element. Above is some basic knowledge about rigid couplings shared with you, hoping to help users confused in this area. If you have any questions, please contact our factory, and we will find a way to help you solve them.

parker coupling relative motion

Rigid couplings are composed of rigid force-transmitting components. There is no relative motion between the connecting parts, so they do not have the ability to compensate for relative offset between the two shaft axes. They are only suitable for occasions where the two connected shafts can be strictly aligned during installation and no relative offset occurs during operation. Flange couplings have no elastic elements, lack vibration damping and buffering functions, and are generally only suitable for operating conditions with stable loads and no impact vibration. Rigid couplings were formerly known as fixed rigid couplings, including flange couplings, radial key flange couplings, floating shaft couplings, clamp shell couplings, sleeve couplings, etc. Rigid couplings generally have a simple structure and lower manufacturing costs. When selecting rigid couplings, try to minimize the alignment error of the axes of the two connected shafts. To reduce the impact of additional loads on the coupling, try to minimize the distance between the coupling and the bearing. Flange couplings (also known as flanged couplings) connect two flange-type half-couplings using bolts. Rigid couplings have two main structural forms: (1) achieving alignment of the two shafts using fitted bolts and transmitting torque through compression and shear on the bolt shank; (2) achieving alignment by matching a shoulder on one half-coupling with a groove on the other half-coupling. The bolts connecting the two half-couplings can be grade A and grade B ordinary bolts, with torque transmitted through the frictional moment on the mating surfaces of the two half-couplings. Materials for rigid couplings can be gray cast iron or carbon steel. Cast steel or forged steel should be used under heavy loads or when the circumferential speed exceeds 30 meters/second.

parker coupling disassembly method

A professional manufacturer of rigid couplings teaches you the correct method for disassembling rigid couplings. Before disassembly, mark the mating positions of the various components of the coupling to serve as a reference for reassembly. For Lingsi couplings used in high-speed machinery, the connecting bolts are weighed, so the marks must be clear and must not be confused. When disassembling the coupling, generally remove the connecting bolts first. Due to the deposition of oil sludge, corrosion products, and other deposits on the thread surface, the bolts are difficult to remove; this is especially true for severely corroded bolts, where disassembly is very difficult. [For disassembly of the connecting bolts, suitable tools must be selected, because the load-bearing surfaces of the external hexagon or internal hexagon of the bolts have slipped and been damaged, making disassembly even more difficult. For bolts that are already corroded or have heavy oil sludge, solvents (such as rust loosening agents) are often sprayed onto the connection points between the bolts and nuts, allowing the solvent to penetrate into the threads, which makes it easier to disassemble the rigid coupling.

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