German STEINE coupling STEINE model STEINE price

STEINE coupling is a widely used coupling, also known as a jaw coupling, consisting of two metal jaw disks and an elastic element. The two metal jaw disks are generally made of No. 45 steel, but aluminum alloy is also used when load sensitivity is required.

STEINE coupling structure

Consists of two hubs and one center slider. The center slider, acting as a torque transmission element, is typically made of engineering plastics; in special cases, other materials such as metals may be selected. The center slider is connected to the hubs on both sides via slots arranged at 90° relative positions, thereby achieving torque transmission. A slight interference fit between the center slider and the hubs ensures zero-backlash operation during equipment running. Over time, the slider may lose its backlash-free function due to wear, but the center slider is inexpensive and easy to replace, restoring original performance after replacement. Slider couplings are commonly used with standard motors; in individual cases, they can also connect servo motors, correcting misalignment through the sliding motion of the center slider. Since the half-coupling and intermediate disc form a sliding pair without relative rotation, the angular velocities of the driving and driven shafts must be equal. However, under relative displacement between the two shafts, significant centrifugal force arises in the intermediate disc, increasing dynamic loads and wear. Therefore, ensure the operating speed does not exceed the specified limit during selection. This type of coupling is generally used for speeds n<250r/min, where shaft stiffness is high and there are no severe impacts.

STEINE coupling features

The materials for slider coupling parts can be 45 steel, with heat treatment required on working surfaces to increase hardness; for lower requirements, Q275 steel can be used without heat treatment. To reduce friction and wear, lubrication should be applied through the oil hole in the intermediate disk during use. Since the half-coupling and the intermediate disk form a sliding pair and cannot rotate relative to each other, the angular velocity of the driving shaft must equal that of the driven shaft. However, when operating with relative displacement between the two shafts, the intermediate disk generates significant centrifugal force, increasing dynamic loads and wear. Therefore, care must be taken during selection to ensure the operating speed does not exceed the specified value. This type of coupling is generally used for speeds n<250r/min, where shaft stiffness is high and there are no severe impacts. A slight pressure fit between the center slider and the shaft hubs ensures zero-backlash operation during equipment running. With prolonged use, the slider may lose its backlash-free function due to wear, but the center slider is inexpensive and easy to replace, restoring original performance after replacement. Slider couplings are commonly used with general-purpose motors and, in individual cases, to connect servo motors, correcting relative displacement through the sliding of the center slider during use. Since resistance to relative displacement comes from the friction between the slider and the shaft hubs, the bearing load does not increase with greater relative displacement. Slider couplings can eliminate additional loads between shafts during motor automatic control processes; the fixed body uses splines for sliding, while the sliding body's inner and outer sleeves can slide relatively in the axial direction; this coupling integrates sliding and rotation; for equal rotational diameters, the shortest dimension is far smaller than that of a cross-axis. It improves the uniformity of load distribution on the working surface and can transmit higher torque, though elasticity is slightly reduced.

STEINE coupling applications

Unlike other couplings, the slider coupling lacks elastic elements that work like springs, so bearing loads do not increase with greater relative displacement between shafts. Regardless, this series of couplings offers good value for money, with the ability to choose sliders of different materials being its greatest advantage. Juren Company can provide a variety of raw material options for center sliders to suit different applications based on specific customer requirements. Generally, one type of material is suitable for zero-backlash, high-torque rigidity, and high-torque conditions, while another type is suitable for low-precision positioning, where zero-backlash is not required, but vibration absorption and noise reduction functions are needed. Non-metallic sliders also offer excellent electrical insulation and can serve as mechanical fuses. When the engineering plastic slider is damaged, torque transmission is completely terminated, thereby protecting expensive mechanical parts. This design is suitable for large parallel relative displacements. The three-part design of the slider coupling limits its ability to compensate for axial deviations, meaning it cannot be used in push-pull applications. Additionally, since the center slider is floating, the motion of the two shafts must ensure the slider does not detach.

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