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Rigid couplings are manufactured from forged C45 steel with heat treatment and 700 MPa tensile strength. These couplings are designed for shafts with diameters from 10 to 200 mm. Shaft bore tolerance precision follows ISO H7 standard for backlash-free connection. Gear couplings utilize helical gear teeth with a 20-degree pressure angle. This design accommodates angular misalignment up to 1.5 degrees. Torque transmission capacity ranges from 50 to 20,000 Newton meters. Disc couplings are produced from 316 stainless steel with 0.5 to 3 mm thickness. These couplings can absorb up to 95% of torsional vibrations.

Elastomeric coupling structures consist of two metal flanges and a rubber element. The rubber elements torsional hardness is adjustable between 40 to 90 Shore A. These couplings withstand operating temperatures from -30 to +120 degrees Celsius. Hydraulic couplings are filled with silicone oil of ISO VG 32 viscosity grade. They feature a shock absorption coefficient up to 250% of rated torque. Maximum rotational speed varies between 3,000 to 20,000 RPM across types. Hot-dip galvanized coating with 80-micron thickness guarantees corrosion resistance. Service life under nominal load exceeds 50,000 hours of continuous operation.


helicoilshams	021-66712078

helicoilshams

Iran

021-66712078

helicoil

Flexible couplings are manufactured from quenched 4140 alloy steel with a yield strength of 850 MPa. Standard outer diameters range from 35 to 250 mm, designed for 10 to 5000 Nm torque transmission. Their misalignment tolerance compensates for 0.5 mm axial, 0.25 mm radial, and 0.5 degree angular deviation. Elastomeric elements use 98 Shore A polyurethane or Hytrel, operating from -40 to +120°C. Natural frequency typically exceeds 5000 Hz to prevent resonance. Installation uses high-friction clamp-type hubs, requiring no keyway.

The coupling structure comprises two metallic hubs and a central flexible element. This design transmits torsional torque with a stiffness of 100 to 10,000 Nm/rad. Couplings can absorb sudden shock loads up to 300% of rated torque. Static and dynamic balancing meets ISO G6.3 grade for speeds up to 10,000 RPM. Hubs are often protected with anti-corrosion phosphate or epoxy coating. Maintenance-free couplings offer a service life exceeding 20,000 hours of continuous operation. Standard materials provide a continuous operating temperature range from -30 to +100°C.