Retarder is not perfect without any defects

Certainly, retarder is not perfect without any defects. However, with the comparison of those two cases, it is more suitable to choose retarder for use.

Shortages of using retarder:
1. If the retarder is equiped while the encoder is at the motor end, the manufacturing presicion will go against the actual accuracy.
2. Minor errors caused by the variation in thickness of oil film between tooth space in multi-level retarder will be amplified to decrease the repeated accuracy.
3. Gear engagement and flexspline deformation of retarder limit its service life.
4. The nonlinear coupling of multi-link mechanism tooth space worsen the robot's absolute accuracy, so that we take over from it with repeated accuracy. It also make pure offline programming of robots difficult, increasing the difficulty and cost of deployment.

The above is to answer why we cannot operate robot joints by controlling rotating speed of servomotor rotors but by using retarder. Although there are robots equiped with direct drive motor, because of those problems we have mentioned, those robots lack a bit of maturity. In a word, using retarder in industrial robots helps their motors gain high torque instead of applying high rotation speed that motors are easy to reach.
Why choosing the brand Jingbei?
Characteristics of Jingbei retarder:
1. High precision
The gear back clearance is 0.05°, belonging to high precision series, which gives full play to precise location, making best use of the characteristics of high precision servo motor.
2. High rigidity
Adopt structural steel to process the machine body.
3. Conical roller bearing
Using integrated roller bearing to improve rigidity and torque.
4. High-load capacity
The main bearing adopts conical roller bearng, realizing high-load capacity.
5. Flange and shaft sleeve solution
They can be installed in any servo motors in the world.
6. No lubricating grease leakage
Using high viscosity lubricating grease that is not easy to separate can effectly avoid leaking of lubricating grease.
7. Long service life
Using durable, low-abrasion and high-class lubricating grease can dispense with long-time maintenance (20000 hours).