German wichita coupling wichita model wichita price

wichita coupling is the most important component in an engine. It withstands the force transmitted from the connecting rod, converts it into torque, outputs it through the crankshaft, and drives other accessories on the engine. The crankshaft is subjected to the combined effects of centrifugal force from rotating masses, periodically changing gas inertia forces, and reciprocating inertia forces, causing the crankshaft to bear bending and torsional loads. Therefore, the crankshaft is required to have sufficient strength and stiffness; the journal surface must be wear-resistant, operate uniformly, and have good balance.

wichita coupling introduction

Divided into two major categories: convex and concave. The convex type is further divided into three types: skeleton-integrated, non-skeleton integrated, and radial slit type. Their common feature is that the tire ring is used to connect the two halves of the coupling with bolts to achieve the connection of the two shafts. The inner side of the tire ring is bonded to the steel skeleton by vulcanization, and nuts are welded at the bolt holes on the skeleton. During assembly, bolts are used to connect the flanges of the two coupling halves. Torque is transmitted by the friction generated between the tire and the flange end face by tightening the bolts. The tire ring undergoes torsional shear deformation during operation, so the tire coupling has high elasticity, a large ability to compensate for relative displacement of the two shafts, and good damping. Moreover, it has a simple structure, requires no lubrication, and is convenient for assembly, disassembly, and maintenance.

wichita coupling imbalance phenomenon

Due to various reasons, the center of mass or principal axis of inertia of a tire coupling does not coincide with its axis of rotation. During operation, this produces unbalanced centrifugal inertial forces, centrifugal inertial couples, and dynamic deflection (vibration mode), known as rotor imbalance. This imbalance inevitably causes vibration in the shaft system, affecting the normal operation and service life of the machine, so it must be taken seriously. To correct or minimize the imbalance of the tire coupling, an appropriate balance grade should be selected as needed. After product manufacturing and installation on the machine are completed, balance is achieved on the specified balance (correction) plane of the coupling by adding or removing appropriate mass to meet the balance grade requirements. This process is called balance correction, or simply balancing. The degree of imbalance (imbalance amount U) is usually expressed by the product mr of the rotor mass m and the distance r from the center of mass to the rotor rotation axis, called the mass-radius product. It can also be expressed as the mass-radius product per unit mass, called eccentricity e (not eccentricity in the geometric sense). The mass-radius product mr is a relative quantity related to rotor mass, while eccentricity e is an absolute quantity independent of rotor mass. The former is more intuitive and is often used for balancing operations on specific given rotors, while the latter is used to measure the quality of rotor balance or detect balance precision. The balance grade standard for tire couplings is evaluated based on e.

wichita coupling maintenance

1) For jaw couplings, judge whether there is abnormal noise by listening, or rotate the two coupling halves by hand to check for large circumferential play. If present, the jaw rubber ring may be damaged; alternatively, check whether the half-coupling is loose on the shaft. 2) For flange couplings, if the connecting bolt holes or pin holes of the two coupling halves are severely worn, the usual method is to machine the holes and fit suitable bolts, or to fill the holes with electric welding and re-machine them. 3) For slider couplings, pay attention to the lubrication condition. 4) For gear couplings, inspect the tooth profile using calipers, span micrometers, or templates. If tooth thickness wear exceeds 5~30% of the original tooth thickness, replace the coupling; for running mechanism gear couplings, the limit is 20~30%. 5) Check that the sealing devices, retaining rings, expansion rings, springs, etc., of the gear coupling are not damaged or aged; otherwise, replace them promptly. 6) If the fit between the half-coupling or gear coupling bushing and the shaft does not meet drawing requirements, or if there are large scratches on the shaft due to key looseness, repair promptly. Generally, only the coupling or bushing is repaired; shaft repair is not permitted to prevent shaft breakage accidents. 7) For couplings requiring lubrication, add lubricating oil regularly. Slider couplings, universal couplings, chain couplings, etc., all require regular oiling and lubrication. Our company uses universal couplings extensively, especially in the packaging workshop.

Weidou Intelligent Technology professionally sells German wichita rigid couplings, wichita flexible couplings, wichita safety couplings, wichita universal couplings, wichita diaphragm couplings, wichita plum blossom couplings, wichita flange couplings, wichita cross couplings, wichita slider couplings, wichita gear couplings, wichita tire couplings, wichita elastic couplings, wichita bellows couplings, wichita roller chain couplings, wichita spring couplings, wichita original German imports. Welcome customers to inquire and order.