CRS12-1503/CRS12-1506/CRS12-1508

Precious metal brush,
Sleeve bearings RC Servo motor

Gear
-	-	-	-

Coreless Motor
CRS12-1503	CRS12-1506
CRS12-1508	-

Encoder
-	-

Driver
-	-
-	-

Precious
metal brush

Sintered
sleeve bearing

Nd-Fe-B
magnet

Please provide corresponding pinion gear or specify pinion paramenters for sample making.

Specifications

	CRS12-1503	CRS12-1506	CRS12-1508
Rated voltage[V]	7.4	7.4	12
No load speed[rpm]	37,400	26,700	37,900
No load current[mA]	53	31	33
Stall torque[mNm]	4.98	3.29	4.79
Stall current[mA]	2,739	1,303	1,651
Output power[W]	4.9	2.3	4.8
Max efficiency[%]	74	72	74
Terminal resistance[Ω]	2.70	5.68	7.27
Rated torque[mNm]	0.61	0.44	0.59
Rated speed[rpm]	32,800	23,100	33,200
Rated current[mA]	381	201	234
Friction torque[mNm]	0.10	0.08	0.10
Back-EMF constant[mV/rpm]	0.194	0.271	0.310
Torque constant[mNm/A]	1.85	2.59	2.96
Slope of N-T curve[rpm/mNm]	7,505	8,097	7,913
Mechanical time constant[ms]	15.56	16.83	16.36
Rotor inertia[gcm2]	0.20	0.20	0.20
Max torque[mNm]	1.66	1.10	1.60
Inductance[mH] @1kHz	TBD	0.050	TBD
Thermal resistance Rth1（coil-housing）[K/W]	20	20	20
Thermal resistance Rth2（housing-ambient）[K/W]	68	68	68
Shaft raddial play[mm]	0.05
Shaft axial play[mm]	0.03‐0.3
Max shaft radial load[N]	0.5(5mm ※1)
Max shaft axial load[N]	0.15
Max shaft axial load at standstill[N]	7.8
Operating temperature[℃]	-20‐+60
Max coil temperature[℃]	80
Weight[g]	9 ※2

※1 measured at ( )mm point from flange
※2 Weight without pinion

Electrical connections

CRS12-1503 ／ CRS12-1506 ／ CRS12-1508
#1	+Terminal	Motor Vin (+)
#2	-Terminal	Motor GND (-)

Specification charts

Pinion options

	Module	Number of teeth	Material
Pinion A	0.25	10	SUS303
Pinion B	0.25	10	C3604
Pinion C	0.25	11	C3604
Pinion D	0.25	18	C3604
Pinion E	0.30	10	SUS303
Pinion F	0.30	10	C3604
Pinion G	0.30	12	SUS303

If you require specifications other than those provided above, please provide the pinion that fits the shaft diameter or notify us of pinion specifications in advance.