German Steinel coupling, Steinel model, Steinel price

Steinel couplings connect two flanged half-couplings to their respective shafts using standard parallel keys, and then bolt the two half-couplings together into a single unit to transmit motion and torque. This type of coupling has two main structural forms: (1) alignment of the two shafts is achieved by bolts in reamed holes, with torque transmitted through compression and shear on the bolt shanks; (2) alignment is achieved by the fit between a spigot on one half-coupling and a recess on the other. The bolts connecting the two half-couplings can be standard bolts of grade A and grade B, with torque transmitted via the frictional moment at the mating surfaces of the two half-couplings.

Steinel coupling introduction

Gear couplings have small radial dimensions and high load capacity. They are commonly used for shaft transmissions under low-speed, heavy-load conditions, such as in metallurgy, mining, and lifting/transport industries, and are also suitable for petroleum, chemical, and general machinery sectors. 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, while straight-tooth gear couplings should be avoided where possible. Gear couplings are a type of movable rigid coupling. They transmit torque and rotational motion between two half-couplings through the meshing of internal and external teeth, making them suitable for connecting coaxial shaft systems and providing certain compensation for relative shaft displacement. Their structure is shown in Figure One, consisting mainly of an internal gear ring, a gear hub, and end covers. For smaller-sized gear couplings, the end cover and internal gear ring can be integrated into a single piece. Due to their compact structure, high load capacity, wide operating speed range, and reliable performance, gear couplings are widely used in various mechanical industries including metallurgy, mining, lifting/transport, petroleum, and shipbuilding.

Steinel 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, while straight-tooth gear couplings are considered obsolete products and should be avoided where possible. Commonly available gear couplings on the market include standard structural gear couplings, drum-tooth gear couplings, and nylon gear couplings. Among these, drum-tooth gear couplings come in many models and are widely applied.

Steinel coupling maintenance

There are hundreds of types of gear couplings. However, there are two basic forms: 1) Internal and external tooth engagement type; 2) Face tooth engagement type. Other forms are variations based on these two. The internal and external tooth engagement type of gear coupling can transmit relatively large torque. During design, different user requirements are taken into account. The lengths of the shaft ends on both sides of the teeth are intentionally designed to be inconsistent. This allows users to choose the installation direction according to their needs. Therefore, There is no specification regarding which end faces which direction. If replacing on existing equipment during installation, the orientation should generally match the original. If it is newly designed and manufactured equipment, then, under the premise of not interfering with other surrounding parts, install according to the principle that more engagement surfaces between internal and external teeth ensure greater reliability. When overhauling gear couplings, the following methods are generally used: 1) Check the meshing condition of the coupling teeth; the contact area along the tooth height shall not be less than 50%, and along the tooth width shall not be less than 70%, and the tooth surface must not have severe pitting, wear, or cracks. 2) The total radial runout of the coupling's external tooth ring shall not exceed 0.03mm, and the face radial runout shall not exceed 0.02mm. 3) If the tooth ring needs to be removed, special tools must be used. Do not strike it. To avoid bending or damaging the shaft. During reassembly, heat the gear ring to approximately 200°C 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 according to the original markings and data. 5) Tighten the bolts evenly using a torque wrench.

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