Technical terms

This chapter provides information on various technical terms and their meaning.

Equivalent force on the output F_{2_eq} [N]

The equivalent force on the output describes the force that is relevant for dimensioning the gear unit.

Equivalent application torque T_{2_eq} [Nm]

The equivalent application torque describes the torque that is relevant for the dimensioning of the gear unit.

Dimensioning factor f_a

The dimensioning factor describes the influence of the daily operating time and the operating factor on the application torque.

Operating mode factor K_M

The operating mode factor describes the influence of duty cycle, number of cycles and dynamics on the application torque.

Mass moment of inertia; based on the drive J₁ [kgcm²]

The mass moment of inertia is a measure for the tendency of a body to maintain its motion state (whether at rest or in motion).

Running noise L_PA [dB/A]

The running noises are influenced, for example, by:

• transmission ratio and speed
• lubricants and gearing or
• Installation position

Maximum radial force F_2R [N]

The radial force is the force component that acts at right angles to the output shaft and parallel to the output flange. It acts perpendicular to the axial force and can have an axial distance x₂ to the shaft shoulder or the shaft flange. This distance acts as lever arm. The lateral force generates a bending moment.

Maximum torque at the output T_2a [Nm]

Represents the maximum torque that can be transmitted by the gear unit. This value may be lower, depending on application-specific boundary conditions.

EMERGENCY STOP torque T_2Emerg [Nm]

The EMERGENCY STOP torque is the maximum permissible torque at the gear unit output. It may be reached 1000 times at the most during the service life of the gear unit and must never be exceeded.