German MP Filtri coupling, MP Filtri model, MP Filtri price

MP Filtri coupling slider is ring-shaped, made of steel or wear-resistant alloy. Oldham couplings are suitable for transmissions with lower speeds and higher torque transmission. Slider couplings consist of two shaft hubs and a central slider. The central slider, as a torque-transmitting element, is usually made of engineering plastics; in special cases, other materials such as metals can be selected.

MP Filtri coupling introduction

Consists of two hubs and a thin-walled metal tube, connected by welding or bonding. Although many other materials are available, stainless steel and nickel are the most commonly used metal tube materials. Nickel tubes are produced by electroforming. This method first involves machining a solid mandrel into a corrugated shape, electroplating nickel onto the mandrel, and then chemically dissolving the mandrel to obtain a nickel bellows. This method allows control over the precision of the bellows wall thickness and can achieve thinner walls than bellows made by other methods. These thin-walled bellows give the coupling high sensitivity and rapid response, making it ideal for applications in extremely small and precise instruments.

MP Filtri coupling features and applications

1) Bellows couplings are backlash-free and highly sensitive. 2) High elasticity provides better equipment protection. 3) Capable of absorbing vibration and compensating for radial, angular, and axial misalignments. 4) Oil-resistant and highly corrosion-resistant. 5) Torsionally rigid, with identical clockwise and counterclockwise rotation characteristics. 6) Commonly used in CNC machine tools, indexing tables, and other industrial machinery. The elastic element of the bellows coupling is a precision metal bellows, available in flexible and rigid series. The flexible series has greater elasticity and is often used in micro applications such as encoders and sensors, while the rigid series is mainly applied in servo motors, CNC machine tools (machining centers), and similar applications.

MP Filtri coupling troubleshooting

From the coupling structure, it is known that the coupling transmits power to the power output shaft (gearbox shaft) via a clamping hub connection, and to the power input shaft via a clamp collar. Power is transmitted between the clamp end and the clamping hub end of the coupling through the bellows, which are bonded to the clamping hub and clamp collar. The fault location is at the clamp collar and bellows. Two pre-deformation grooves are machined radially into the clamp collar. The groove width is approximately 2mm. On the side with the clamping screw, the groove is through in the diametrical direction but not through in the depth direction at the junction with the bellows, with a sloped cross-section; the other groove is not through radially, but its longitudinal section at the junction with the bellows is also not through, with a sloped cross-section. During clamping, the clamping screws are tightened to the specified value using a torque wrench, eliminating the clearance between the bore and shaft through the deformation of the clamp collar to achieve clamping. From the cross-sectional view, due to the presence of the two pre-deformation grooves, the cross-section at this location is weaker, and deformation mainly occurs at these grooves. The cross-sectional area of the pre-deformation groove on the side with the clamping screw is the smallest, making this section the weakest. Permanent figure-eight deformation marks at its end indicate that the stress in this area during clamping is significant, exceeding the yield limit of super-hard aluminum. From the stress distribution diagram, once the bevel gearbox and main gearbox are assembled and clamped, the stress value at the bonded interface of the pre-deformation groove on the clamping screw side is 164Mpa, with a deformation magnitude of 0.027mm. During launcher operation, the coupling is subjected to alternating composite stresses, causing even greater stress and deformation at this location. If minor defects such as voids, inclusions, or flaws exist at the bonded interface during manufacturing, micro-cracks will first form at defective spots within the area of highest stress on the coupling's bonded interface when the alternating stress exceeds the bond strength, creating a fatigue source. Due to stress concentration at the crack tip, the crack gradually propagates with increasing stress cycles and prolonged exposure to constant stress. As the crack spreads, the bonded interface is progressively weakened. When the crack reaches a certain size, fatigue failure occurs. The coupling functioned normally during initial testing, but as usage time increased, cracks gradually propagated, leading to coupling failure even under low loads. The presence of stress at the bonded joint is a potential hidden cause of failure. To avoid high stress generation in the clamp collar during clamping, annular grooves are generally cut into the clamp collar for stress relief.

Weidou Intelligent Technology specializes in selling German MP Filtri rigid couplings, MP Filtri flexible couplings, MP Filtri safety couplings, MP Filtri universal joints, MP Filtri disc couplings, MP Filtri jaw couplings, MP Filtri flange couplings, MP Filtri Oldham couplings, MP Filtri slider couplings, MP Filtri gear couplings, MP Filtri tire couplings, MP Filtri elastic couplings, MP Filtri bellows couplings, MP Filtri roller chain couplings, MP Filtri spring couplings. MP Filtri products are original imports from Germany. Customers are welcome to inquire and order.