Chapter 8 Maintenance and Inspection 8.6 Replacement of Timing Belt
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8.6 Replacement of Timing Belt
8.6.1 Inspecting the Belt
Remove the pulley cover and visually inspect the belt.
Durability of the timing belt is affected significantly by the operating condition, and there is no standard
guideline as to when the belt should be replaced. Generally, the belt is designed to withstand several
millions of flexing loads.
It should be 2,500-hour or 2,500km for reference.
Also, proceed to replace the belt if any of the following is confirmed in the regular inspection.
• When the gear and belt area show obvious friction.
• When swelling occurs as a result of oil adhesion.
• When damages such as a crack occurs on the belt gear and back side.
• When the belt breaks.
If the belt needs to be replaced, please contact IAI.
8.6.2 Applicable Belt
The Tabletop Robot uses the following timing belt for its actuators. Should you require replacement of
any belt used in your robot, please contact IAI.
[Timing belt]
Current Types
TTA Model Code Axis Lead
Model Code of
Single Product
Manufacturer
Model Code
Manufacturer
X-axis TB-TTA-PA-X-02 243-3GT-6
Y-axis TB-TTA-PAC-XY-02 318-3GT-6
TTA-A□
Pulse motor type
Z-axis TB-TTA-PAC-Z-02 244-2GT-6
X-axis TB-TTA-SA-X-01 225-3GT-6
Y-axis TB-TTA-SAC-XYL-01 300-3GT-6
L TB-TTA-SAC-ZL-01 232-2GT-6
TTA-A□S
Servomotor type
Z-axis
H TB-TTA-SAC-ZH-01 226-2GT-6
X-axis TB-TTA-PAC-XY-02 318-3GT-6
Y-axis TB-TTA-PAC-XY-02 318-3GT-6
TTA-C□
Pulse motor type
Z-axis TB-TTA-PAC-Z-02 244-2GT-6
X-axis L TB-TTA-SAC-XYL-01 300-3GT-6
Y-axis L TB-TTA-SAC-XYL-01 300-3GT-6
Z-axis L TB-TTA-SAC-ZL-01 232-2GT-6
X-axis H TB-TTA-SC-XYH-01 297-3GT-6
Y-axis H TB-TTA-SC-XYH-01 297-3GT-6
TTA-C□S
Servomotor type
Z-axis H TB-TTA-SAC-ZH-01 226-2GT-6
Gates Unitta Asia Company
Old Types
TTA Model Code Axis
Model Code of
Single Product
Manufacturer
Model Code
Manufacturer
X-axis TB-TTA-PAC-X-01 100S3M243R
Y-axis TB-TTA-PAC-Y-01 100S3M318R
TTA-A□ Pulse motor type
TTA-C□ Pulse motor type
Z-axis TB-TTA-PAC-Z-01 60S3M243R
Bando Chemical Industries
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