IAI America RCA2-SA6R - Manual (Page 82)

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13. Maintenance Inspection
13.11 Replacement of Belt and Motor for Reversing Type (AC Servo Motor: RCA2)
[Items required for replacing the motor]
y Replacement motor unit of reversing type
Model number
Axis type
Without brake With brake
SA3R RCA2-MU1B RCA2-MU1B-B
SA4R RCA2-MU2B RCA2-MU2B-B
SA5R RCA2-MU3B RCA2-MU3B-B
RCA2
(brown
encoder
cable
connector)
Slider
type
SA6R RCA2-MU4B RCA2-MU4B-B
y Belt
Manufacturer: Bando Chemical Industries, Ltd.
Belt model (type)
Model
number
40S2M138R, 4-mm wide(clean rubber type) SA3R
60S2M152R, 6-mm wide (clean rubber type) SA4R
60S2M180R, 6-mm wide (clean rubber type) SA5R
60S2M180R, 6-mm wide (clean rubber type) SA6R
y Tension gauge
y Hex wrench set
[Procedure]
[1] Remove the pulley cover.
Remove the mounting screws. (2 pcs for the SA3R, 3 pcs for other models)
[2] Loosen the tension adjustment bolts (4 pcs) and slack the belt.
Mounting screw
Model Nominal
thread size
Applicable Allen
wrench
SA3R/SA4R M2.5 1.5 mm across flats
SA5R/SA6R M3 2 mm across flats
Tightening adjustment bolt
Model Nominal
thread size
Applicable hex wrench
SA3R M2.6 2 mm across flats
SA4R M3 2.5 mm across flats
SA5R/SA6R M4 3 mm across flats