German NADELLA coupling, NADELLA model, NADELLA price

NADELLA coupling is a widely used type of coupling, also known as a jaw coupling, consisting of two metal jaw hubs and an elastomer. The two metal jaw hubs are typically made of 45 steel, but aluminum alloy is also used when load sensitivity is required.

NADELLA coupling manufacturing process

The spider coupling is machined by turning, milling, and broaching, followed by overall heat treatment to ensure sufficient mechanical strength. There is also a cast jaw hub available on the market, which allows for mass production and eliminates machining losses. Therefore, the price is much lower than that of machined parts. However, the performance of castings is not very good. It is best not to use them in critical applications. Furthermore, the jaws of cast hubs are prone to tooth breakage (jaw tooth detachment) under high speed or high load conditions. 1) Compact, backlash-free, with three different hardness elastomers; 2) Absorbs vibration, compensates for radial and angular misalignment; 3) Simple structure, easy maintenance and inspection; 4) Maintenance-free, oil-resistant and electrically insulating, operating temperature 20℃ to 60℃; 5) Spider elastomers are available in four, six, eight, and ten lobes; 6) Fixing methods include set screw, clamping, and keyway fixation.

NADELLA coupling application range

Spider couplings are widely used in CNC machine tools, CNC lathes, machining centers, engraving machines, CNC milling machines, computerized milling machines, metallurgical machinery, mining machinery, petroleum machinery, chemical machinery, lifting machinery, transport machinery, light industry machinery, textile machinery, water pumps, fans, etc.

NADELLA coupling installation and use

1) Wipe clean any dust and dirt from the installation shaft surface, and apply a thin layer of machine oil or lubricant. 2) Clean the inner bore of the coupling and apply machine oil or lubricant. 3) Insert the coupling onto the installation shaft; if the bore fit is tight, avoid striking with an iron hammer or hard metal during installation. 4) After positioning, first tighten the screws gently in a diagonal pattern using a torque wrench (specified tightening torque 1/4). 5) Increase the force (to 1/2 of the specified tightening torque) and repeat step 4. 6) Tighten and fix according to the specified tightening torque. 7) Finally, tighten the fixing screws sequentially in a circular direction. 8) For disassembly, please proceed only when the device has completely stopped; loosen the locking screws sequentially.

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