Power ratings of the N-EUPEX series

¹⁾ The maximum speed of the respective type must be noted. For further information on permissible shaft misalignment, please see the operating instructions.

 ²⁾ Does not apply to type H.

For maximum coupling torque: T_Kmax = 3.0 · T_KN

For coupling overload torque: T_KOL = 3.5 · T_KN

For coupling fatique torque: T_KW = 0.15 · T_KN, where T_N > T_W must be adhered to.

Torsional stiffness and damping

The values stated in the above table apply to a capacity utilization of 50 %, an excitation amplitude of 10 % T_KN with the frequency 10 Hz and an ambient temperature of 20 °C. Dynamic torsional stiffness is dependent on load and increases in proportion to capacity utilization. The following table shows the correction factors for different nominal loads.

C_Tdyn = C_{Tdyn 50 %} · FKC

The damping coefficient is ? = 1.4

Furthermore, torsional stiffness and damping depend on the ambient temperature and the frequency and amplitude of the torsional vibration excitation. More precise torsional stiffness and damping parameters on request

Permitted shaft misalignment

The permitted shaft misalignment depends on the operating speed. As the speed increases, lower shaft misalignment values are permitted. The following table shows the correction factors for different speeds.
The maximum speed for the respective coupling size must be observed!

?K_perm = ?K₁₅₀₀ · FKV

The axial misalignment may occur dynamically at frequencies up to 10 Hz. For fitting a maximum gap dimension of S_max = S + ?S and a minimum gap dimension of S_min = S – ?S is permitted. Shaft misalignments ?K_a, ?K_r and ?K_w may occur simultaneously.

Power ratings of the N-EUPEX DS series

¹⁾ Does not apply to type HDS.

Flexibles of sizes 66 to 272 are of the compound type with a hard core and soft thrust pieces.
Sizes 305 to 556 are of 90 ShoreA NBR material.

For maximum coupling torque: T_Kmax = 2.0 · T_KN

For coupling overload torque: T_KOL = 3.0 · T_KN

For coupling fatigue torque: T_KW = 0.15 · T_KN

Torsional stiffness and damping

The values stated in the above table apply to a capacity utilization of 50 %, an excitation amplitude of 10 % T_KN with the frequency 10 Hz and an ambient temperature of 20 °C. Dynamic torsional stiffness is dependent on the load and increases in proportion to capacity utilization. The following table shows the correction factors for different rated loads.

C_Tdyn = C_{Tdyn 50 %} · FKC

The damping coefficient is? = 1,4
Torsional stiffness and damping is further dependent on the ambient temperature and the frequency and amplitude of the torsional vibration excitation. More precise torsional stiffness and damping parameters on request.

Permitted shaft misalignment

The permitted shaft misalignment depends on the operating speed. As the speed increases, lower shaft misalignment values are permitted. The following table shows the correction factors for different speeds.
The maximum speed for the respective coupling size must be noted!

?K_perm = ?K₁₅₀₀ · FKV

The axial misalignment must occur dynamically at frequencies up to 10 Hz. For fitting a maximum gap dimension of S_max = S + ?S and a minimum gap dimension of S_min = S – ?S are permitted.

Shaft misalignment ?K_a, ?K_r and ?K_w may occur simultaneously.

Assignment of N-EUPEX sizes to IEC standard motors

The assignment applies to an application factor of 1.25.

Outputs P_M of IEC motors and assigned N-EUPEX couplings