Machine element

MIKI PULLEY

The Step-Flex Coupling STF is a high-damping rubber coupling ideal for servo and stepper motors. It employs a newly developed laminated rubber element (HNBR) to achieve high damping and low reaction force. Compared to flexible couplings using metal in the elastic part, it quickly absorbs vibrations and suppresses resonance phenomena. Therefore, it delivers excellent performance in a wide range of applications such as encoders, semiconductor manufacturing equipment, and actuators.

Features

High Damping Performance: The newly developed laminated rubber element (HNBR) quickly absorbs vibrations and suppresses resonance phenomena.
Low Reaction Force: Designed to reduce the load on machinery.
Backlash-Free: Enables high-precision positioning.
High Flexibility: Absorbs a wide range of angular and axial misalignments.
Easy Installation: Can be easily installed using clamp bolts.

Specifications

Model: STF
Torque Range: 0.5 to 60 N·m
Operating Temperature Range: -20°C to +80°C
Element Used: Laminated rubber element (HNBR)
Mounting Method: Clamp bolts
Maximum Rotation Speed: 10,000 min⁻¹
Shaft Misalignment Absorption Range: Parallel misalignment: ±0.2 mm, Angular misalignment: ±1.5°, Axial misalignment: ±0.3 mm

Applications

Encoders: Devices requiring high-precision positioning
Semiconductor Manufacturing Equipment: Manufacturing processes requiring high precision and stability
Actuators: Equipment needing precise and stable operation
Servo Motors: Motors requiring high-precision control
Stepper Motors: Motors needing vibration suppression and precise movement

The Step-Flex Coupling STF is an excellent solution as a high-performance rubber coupling for servo and stepper motors, suppressing resonance and achieving vibration absorption and low reaction force.