Polyurethane elastic muftia

An elastic coupling is designed to connect two shafts in a vehicle's drivetrain and absorb vibrations emitted by them during operation. The coupling also compensates for minor angular, axial, and radial shaft misalignments. An elastic cardan coupling creates a soft yet reliable connection with the flange, increasing the service life of cardan shafts and the vehicle's drive unit as a whole.

Purpose of an elastic coupling in a vehicle

The main functions of an elastic coupling include:

• Connecting misaligned shafts.
• Cushioning shocks and vibrations that occur during cardan shaft operation.
• Smoothing dynamic vibrations that occur during start-up.
• Protecting the drive from torsional vibrations.

The elastic coupling consists of a rubber housing containing metal bushings for connecting shafts and flanges with bolts. The damping material is a rubber housing that ensures smooth operation of the driveshaft in a vehicle.

When should the flexible coupling in a vehicle be replaced?

Signs of wear on the flexible coupling include noise and vibration while driving, especially during rapid acceleration or downshifting. Regular visual inspection of the driveshaft coupling for cracks and damage to the housing (bolts) is also necessary. The flexible coupling cannot be repaired. If it wears out, a new flexible coupling must be purchased.

Ignoring the replacement of a worn coupling will increase vibration when the shafts rotate. This not only contributes to driving discomfort but also increases the load on other drive components (flanges, cardan shafts, bearings, bolts).

Polyurethane Elastic Coupling

Automakers use conventional rubber as a damping material for flexible cardan couplings, which has a short service life and is not load-resistant. Rubber reinforcement is also used to strengthen the structure, but experience shows that this method does not significantly increase service life.

Modern technologies offer the use of polyurethane as a damping material, which offers several advantages.

PoliPro manufactures polyurethane couplings for various car models. Four-component polyurethane is used as the base material.

Why choose polyurethane technology?

Using polyurethane as the base material for coupling manufacture offers the following advantages:

• Durability. The service life of the flexible coupling is increased 3-5 times compared to the original part.
• Resistance to temperature fluctuations. The material's properties allow the part to be used in a range of operating temperatures from -25°C to +110°C without losing its performance.
• Durability. Polyurethane has increased strength and does not lose its properties under various drive loads (vibrations and impacts). Tear resistance is 2-3 times greater than that of conventional rubber.
• Increased resistance to aggressive substances (fuel and lubricants, acids, road reagents).
• Corrosion protection for metal parts (bushings, couplings, flanges).
• Variable damping material stiffness depending on the load on the part.
• The wide range of applications allows polyurethane couplings to be used in more than just automobiles. The material's properties allow for custom manufacturing of parts in various shapes and sizes.

An important factor in the use of polyurethane is the cost component. The initial cost of a polyurethane coupling may be higher, but over time, the durability of the driveshaft, flange, and bearings increases. Ultimately, this results in significant savings due to the durability of the entire unit.

Manufacturing Process

PoliPro adheres to strict manufacturing technology and maintains the exact dimensions of the original part. The manufacturing process of an elastic coupling consists of several stages:

• Preparing a mold for the future part.
• Filling the mold with polyurethane and then curing (cooling) it at a specified temperature.
• After the material has hardened, the part is precisely adjusted to the dimensions (removing the excess layer on a milling machine).
• At the final stage, measurements are taken and the quality of the part is checked.

Buy an elastic polyurethane coupling in Ukraine

PoliPro offers a wide range of ready-made polyurethane elastic couplings in stock and on request. The company's official website features a catalog of parts for popular car models (BMW, Volvo, Mercedes-Benz, VAZ, GAZ, etc.). If the required part is not available, PoliPro offers custom orders based on the dimensions provided.

Parts are delivered by Nova Poshta courier service within