Robust spline coupling systems that ensure reliable power transmission and alignment in submersible pump assemblies. Each coupling is CNC-machined, broached and nitrided in-house to achieve the zero-backlash fit that Indian borewell and export-grade OEMs demand. High torque capacity up to 6000 Nm DIN 5480, ANSI B92.1 & custom spline profiles Runout control ≤0.02 mm for smooth operation Material certification & hardness traceability Specifications: Material: EN8D, EN19, EN24, SS304/316 Spline Types: Involute, Straight, Trapezoidal Torque Capacity: 100-6000 Nm Surface Treatment: Nitriding, Black oxide, Passivation