FACJ

Basic Specifications 

Coupling Product Introduction

♦ A coupling is a mechanical device that connects two shafts to transmit power and transmits a safety torque.

♦ Generally, couplings can be divided into two main categories: "flexible" and "rigid" couplings.

♦ When it is difficult to transmit power and align the two shafts in a straight line, or when the installation of the two shafts is very simple, a flexible coupling should be used. It has the functions of mitigating shock, absorbing parallelism, angular misalignment, axial misalignment, improving misalignment, and improving the traditional power transmission characteristics of the system. Therefore, even if there is a slight deviation during installation, the bearing will not be strained. It is widely used in the market.

♦ A rigid coupling is a component that cannot cause eccentricity or angular misalignment, fixing the two connected shafts into a single unit. Therefore, extremely high concentricity is required during use, as the user must ensure that the motor rotation and the load shaft are as straight as possible. In other words, the shaft center must be strictly aligned; otherwise, the motor will wobble during operation. Over time, not only will the shaft be prone to breakage due to mechanical fatigue, but the bearings will also overheat and wear due to uneven load distribution. The advantage of a rigid coupling is its reliable transmission of torque.

Coupling fixing method

(1) There are five ways to fix the shaft.
(2) Fastening bolts or countersunk head bolts should be properly tightened using a hex wrench or torque wrench.

♦ Stop payment type:

This low-cost type is the most traditional fixing method. However, the front end of the bolt is in direct contact with the shaft, which may cause damage to the shaft or make disassembly difficult.

♦ Clamping type:

The countersunk bolts are tightened to close the slit, thus clamping the shaft tightly. This allows for easy fixing and disassembly without damaging the shaft.

♦ Separate type:

The detachable type features completely separate bushings. This allows for easy fixing and disassembly without moving your device.

♦ Keyway type:

This type, like the bolt-type, is the most traditional fixing method and is suitable for transmissions with high torque. To prevent axial movement, it is usually used in conjunction with the bolt-type and clamp-type.

♦ Gapless type:

The backlash-free bushing coupling features a high-precision integrated design with no rotational backlash, resulting in high-strength friction torque for shaft fastening and smooth operation, making it suitable for machine tool spindle drives.

 

Motor (electric motor)

♦ Induction motor

(1) It has more than 3 times the torque during instantaneous rotation.

(2) The motor spindle will have a reciprocating motion of ±1.5mm during operation. It is not recommended to use the slotted type.

(3) If a DC motor is used, it can be used in a dusty working environment.

♦ Stepper motor

(1) There is no 3 times the torque during instantaneous rotation, but it is the maximum rated torque of the motor.

(2) The torque at low speeds is greater than that of servo motors of the same class.

(3) The higher the motor speed, the lower the torque.

(4) The motor will heat up during continuous operation (this can be mitigated by using a spring-loaded type).

* Stepper motors have lower output power than servo motors.

♦ Servo motor

(1) It has more than 3 times the torque during instantaneous rotation.

(2) Within the rated speed range, the torque is the rated torque.

(3) The torque is the same at low speed and high speed.

(4) The motor temperature rise is very small during continuous operation.

♦ Encoder

(1) Built into the servo motor, with extremely low driving torque

(2) Or connected to a stepper motor (optional)