German Buehler coupling Buehler model Buehler price

Buehler coupling is a torsionally rigid coupling. It has no rotational backlash even under load. Even when misalignment generates load, the rigid coupling still transmits torque rigidly. It is lightweight, with ultra-low inertia and high sensitivity. It is maintenance-free, with strong oil resistance and corrosion resistance. Materials include aluminum alloy and stainless steel. Set screw type, clamp type, and split type are available. Product models with different bore sizes at both ends are also in stock.

Buehler coupling structure

It consists of two hubs and a center slider. The center slider, acting as a torque transmission element, is usually made of engineering plastic. In special cases, other materials such as metal can be selected. The center slider is connected to the hubs on both sides via slots distributed at 90° relative positions, thereby achieving torque transmission. A slight pressure fit between the center slider and the hubs ensures zero-backlash operation during equipment running. With prolonged use, the slider may lose its backlash-free function due to wear. However, 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 some cases, to connect servo motors. Relative displacement is corrected by the sliding of the center slider during use. Since the half-coupling and the intermediate disc form a sliding pair and cannot rotate relative to each other, the angular velocity of the driving shaft and the driven shaft must be equal. However, when operating with relative displacement between the two shafts, the intermediate disc generates significant centrifugal force, increasing dynamic load and wear. Therefore, care should 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.

Buehler coupling features

The material for slider coupling parts can be 45 steel, with heat treatment required on the 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 disc during use. Since the half-coupling and the intermediate disc form a sliding pair and cannot rotate relative to each other, the angular velocity of the driving shaft and the driven shaft must be equal. However, when operating with relative displacement between the two shafts, the intermediate disc generates significant centrifugal force, increasing dynamic load and wear. Therefore, care should 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 hubs ensures zero-backlash operation during equipment running. With prolonged use, the slider may lose its backlash-free function due to wear. However, 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 some cases, to connect servo motors. Relative displacement is corrected by the sliding of the center slider during use. Since the resistance to relative displacement comes from the friction between the slider and the hubs, the bearing load does not increase with greater relative displacement. Slider couplings can eliminate additional loads between shafts during automatic motor control. The fixed body uses internal 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 the same outer diameter, its shortest dimension is much smaller than that of a cross-axis coupling. It improves the uniformity of load distribution on the working surface and can transmit higher torque, though elasticity is slightly reduced.

Buehler coupling applications

Unlike other couplings, the slider coupling has no elastic elements that work like springs, so bearing load does not increase with greater relative displacement between shafts. Nevertheless, this series of couplings offers good value for money, and the ability to select sliders made of different materials is 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 are needed. Non-metallic sliders also provide excellent electrical insulation and can act as mechanical fuses. When the engineering plastic slider is damaged, torque transmission is completely stopped, 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 misalignment, so it cannot be used in push-pull applications. Additionally, since the center slider is floating, the motion of the two shafts must ensure that the slider does not disengage.

Weidou Intelligent Technology specializes in selling German Buehler rigid couplings, Buehler flexible couplings, Buehler safety couplings, Buehler universal joints, Buehler disc couplings, Buehler jaw couplings, Buehler flange couplings, Buehler cross-slide couplings, Buehler slider couplings, Buehler gear couplings, Buehler tire couplings, Buehler elastic couplings, Buehler bellows couplings, Buehler roller chain couplings, Buehler spring couplings, Buehler original German imports. Welcome inquiries and orders from customers.