Germany MK4/20/37 coupling MK4/20/37 model MK4/20/37 price

MK4/20/37 coupling connects two flanged half-couplings to the respective shafts using standard parallel keys, and then bolts the two half-couplings together into a single unit to transmit motion and torque. This type of coupling has two main structural forms: (1) achieves shaft alignment through bolts in reamed holes and transmits torque by subjecting the bolt shanks to compression and shear; (2) achieves alignment through the fit between a shoulder on one half-coupling and a groove on the other. The bolts connecting the two half-couplings can be standard bolts of grade A and grade B, with torque transmitted through the frictional moment at the joint interface of the two half-couplings.

MK4/20/37 coupling introduction

Gear couplings have a small radial size and high load-carrying capacity. They are commonly used for shaft transmission under low-speed and heavy-load conditions, such as in the metallurgy, mining, and lifting and transportation industries, and are also suitable for the petroleum, chemical, and general machinery industries. High-precision gear couplings that have undergone dynamic balancing can be used for high-speed transmission, such as shaft transmission in gas turbines. Since the angular compensation of drum-shaped gear couplings is greater than that of straight-tooth gear couplings, drum-shaped gear couplings are widely adopted both domestically and internationally, and straight-tooth gear couplings should be avoided as much as possible. Gear couplings are a type of movable rigid coupling. They transmit torque and rotational motion between the two halves of the coupling through the meshing of internal and external teeth, making them suitable for connecting transmission shaft systems with two concentric shafts and providing a certain degree of compensation for relative displacement between the two shafts. Its structure is shown in Figure one, consisting mainly of an internal gear ring, a gear sleeve, and end covers. Generally, for small-sized gear couplings, the end cover and internal gear ring can form an integrated unit. Due to their compact structure, high load-carrying capacity, wide operating speed range, and reliable performance, gear couplings are widely used in various machinery industries such as metallurgy, mining, lifting and transportation, petroleum, and shipbuilding.

MK4/20/37 coupling features

Gear couplings have small radial dimensions and high load capacity. They are commonly used for shaft transmissions under low-speed, heavy-load conditions. High-precision gear couplings that have undergone dynamic balancing can be used for high-speed transmissions, such as gas turbine shaft drives. Since drum-tooth gear couplings offer greater angular compensation than straight-tooth gear couplings, drum-tooth gear couplings are widely adopted both domestically and internationally. Straight-tooth gear couplings are considered obsolete products and should be avoided where possible. Commonly available gear couplings in the market include standard structure gear couplings, drum-tooth gear couplings, and nylon gear couplings. Among these, drum-tooth gear couplings come in many models and are widely applied.

MK4/20/37 coupling maintenance

There are hundreds of varieties of gear couplings, but there are basically two forms: 1) Internal and external tooth engagement type; 2) End-face tooth engagement type. Other forms are variations based on these two. The internal and external tooth engagement type of gear coupling transmits relatively large torque. During design, considering the different needs of users, the lengths of the shaft ends on both sides of the teeth are intentionally made inconsistent so that users can choose the installation direction as needed. Therefore, there is no stipulation on which end faces which direction. During installation, if replacing on existing equipment, it should generally be consistent with the original direction. If designing and manufacturing new equipment, it should be installed according to the principle that more engagement surfaces between internal and external teeth provide greater reliability, provided there is no interference with surrounding parts. Maintenance of gear couplings is generally carried out as follows: 1) Check the meshing condition of the coupling teeth. The contact area shall be not less than 50% along the tooth height and not less than 70% along the tooth width. The tooth surface must not have severe pitting, wear, or cracks. 2) The total radial runout of the coupling's external gear ring shall not exceed 0.03mm, and the face runout shall not exceed 0.02mm. 3) If the gear ring needs to be removed, special tools must be used. Do not strike it to avoid bending or damaging the shaft. When reinstalling, heat the gear ring to approximately 200℃ before mounting it onto the shaft. The interference fit between the external gear ring and the shaft is generally 0.01~0.03mm. 4) When reinstalling the intermediate sleeve or other components, assemble them according to the original markings and data. 5) Tighten the bolts evenly using a torque wrench.

Weidou Intelligent Technology specializes in selling German MK4/20/37 rigid couplings, MK4/20/37 flexible couplings, MK4/20/37 safety couplings, MK4/20/37 universal couplings, MK4/20/37 diaphragm couplings, MK4/20/37 jaw couplings, MK4/20/37 flange couplings, MK4/20/37 cross couplings, MK4/20/37 slider couplings, MK4/20/37 gear couplings, MK4/20/37 tire couplings, MK4/20/37 elastic couplings, MK4/20/37 bellows couplings, MK4/20/37 roller chain couplings, MK4/20/37 spring couplings, MK4/20/37 original German imports. Welcome customers to inquire and order.