Brushless Motor

Because the rotor is free of other objects (no brush), it is designed for high power, and noise-less by principle. It is suitable for long-life use.

Output	Because of no-contact design (no brush/commutator like cored/coreless motor), large current can be input and heat in the coil dissipates quickly
Life	Long life time because of no-contact design
Control	Linear characteristics
Cogging	No magnetic cogging

In our brushless motor, we removed the mechanical contacts such as brushes and commutators used in conventional brushed motors, and applied an electric signal to take their place. The brushless motor requires an electric circuit board because there is no commutator. This motor (circuit board) has two types, one with a magnetic sensor, and the other with no sensor. The one with the magnetic sensor detects its position via the sensor, and the other detects the rotor magnet position via back-EMF. Brushless motor's features are as follows:

Features
Brushless Motor Standard Model
Brushless Motor 4pole High Torque Model
Brushless Motor Pin Assignment Pattern
Outer Rotor Pancake Brushless Motor
Driver
Motor Selection Guide

Features

Stator coil is located outside in inner rotor type brushless motor. Therefore, it is good in heat dissipation.
Because there are no contacts (brush/commutator), large current can be input to answer to high power needs.
No mechanical noise and no electric noise for switching current(no brush and no commutator)
Long life and high reliability (due to no-contact design)

In Orbray's brushless motor, stator is a slot-less core with cup-shaped coil, and rotor is the magnet inside. Therefore, magnetic force is even regardless of coil/magnet position, and motor rotation is free of cogging.

Issues & Challenges in Brushless Motor

As brushless motors have no mechanical contacts for polarity switching, they have high power and long lifespan. However, due to the rotating magnet core, the inertia is much larger than that of coreless brushed motor and the response time slower.
Orbray presents brushless motors that address these issues equally.

Brushless Motor Standard Model

Brushless Motor PDF Catalog

Products	Geared Motor	Dia.φ [mm]	Length [mm]	Rated Voltage [V]	Rated Values				No load		Stall		Mechanical time constant [ms]	Max efficiency [%]
					Torque [mNm]	Speed [rpm]	Current [mA]	Output [W]	Speed [rpm]	Current [mA]	Torque [mNm]	Current [mA]
					Torque [mNm]	Speed [rpm]	Current [mA]	Output [W]	Speed [rpm]	Current [mA]	Torque [mNm]	Current [mA]			BMN02-0593	-	2.4	5.0	4	-	-	-	-	-	-	0.01	43	-	-
BMN04-0829	Planetary	4	8.5	3	0.01	32,229	41	0.035	37,600	31	0.04	98	10.81	19
BMN07-1207	Planetary	7	12.0	3	0.04	18,257	165	0.2	21,300	120	0.30	433	7.34	22
BMN07-1218	Planetary	7	12.0	5	0.04	19,114	106	0.2	22,300	78	0.30	276	7.66	22
BMS10-1003	Spur Planetary	10	10.0	4	0.13	30,429	280	0.9	35,500	170	0.94	940	9.31	39
BMS10-1008	Spur Planetary	10	10.0	6	0.11	28,971	196	0.8	33,800	103	0.75	753	11.07	36
BMS10-1803	Spur Planetary	10	18.0	7.4	0.65	26,829	359	4.5	31,300	63	4.54	2,136	3.87	69
BMS10-1806	Spur Planetary	10	18.0	12	0.75	27,857	290	5.2	32,500	68	5.24	1,621	3.48	63
BMS12-1503	Spur Planetary	12	15.0	7.4	0.82	22,457	432	4.0	26,200	112	5.75	2,349	4.23	61
BMS12-1506	Spur Planetary	12	15.0	12	0.88	27,257	342	5.1	31,800	86	6.15	1,875	4.79	62
BMS12-2102	Spur Planetary	12	21.0	7.4	1.59	19,667	628	6.9	22,800	100	11.60	3,941	2.71	71
BMS12-2104	Spur Planetary	12	21.0	12	1.68	20,931	435	7.7	24,300	70	12.09	2,703	2.77	70
BMS16-2001	Spur Planetary	16	20.0	7.4	1.96	18,900	699	9.4	21,400	93	16.70	5,242	4.62	75
BMS16-2004	Spur Planetary	16	20.0	12	2.28	19,886	591	9.7	23,200	113	15.97	3,459	5.25	67
BMS16-2013	Spur Planetary	16	20.0	24	2.33	21,257	320	10.6	24,800	60	16.30	1,882	5.49	67
BMS16-3001	Spur Planetary	16	30.0	7.4	3.29	12,597	814	9.5	14,500	123	25.10	5,390	3.56	72
BMS16-3002	Spur Planetary	16	30.0	12	4.00	14,723	674	15.4	16,600	86	35.33	5,290	2.89	76
BMS16-3010	Spur Planetary	16	30.0	24	3.90	13,977	314	14.0	15,800	41	33.84	2,410	2.87	76
BMS17-1821	Not applicable	17	18.0	24	1.69	17,143	229	6.2	20,000	72	11.82	1,171	12.91	57
BMD17-1826	Planetary	17	23.9	24	1.40	17,532	153	5.3	20,400	25	9.94	934	10.85	70
BMS22-2413	Planetary	22	24.0	24	4.61	10,286	332	10.2	12,000	80	32.27	1,846	8.42	63

Brushless Motor 4pole High Torque Model

Products	Geared Motor	Dia.φ [mm]	Length [mm]	Rated Voltage [V]	Rated Values				No load		Stall		Mechanical time constant [ms]	Max efficiency [%]
					Torque [mNm]	Speed [rpm]	Current [mA]	Output [W]	Speed [rpm]	Current [mA]	Torque [mNm]	Current [mA]
					Torque [mNm]	Speed [rpm]	Current [mA]	Output [W]	Speed [rpm]	Current [mA]	Torque [mNm]	Current [mA]			B4S12-2108 with Encoder	Spur Planetary	12	21.0	12	1.58	13,132	275	4.5	15,320	55	11.09	1,592	3.49	66
B4S12-2109 with Encoder	Spur Planetary	12	21.0	15	1.66	16,543	288	5.9	19,300	56	11.64	1,678	4.20	67
B4S22-3210	Planetary	22	32.0	24	9.75	6,096	358	13.9	7,000	53	75.54	2,412	3.91	73

Outer Rotor Flat Brushless Motor

Products	Geared Motor	Dia.φ [mm]	Length [mm]	Rated Voltage [V]	Rated Values				No load		Stall		Mechanical time constant [ms]	Max efficiency [%]
					Torque [mNm]	Speed [rpm]	Current [mA]	Output [W]	Speed [rpm]	Current [mA]	Torque [mNm]	Current [mA]
					Torque [mNm]	Speed [rpm]	Current [mA]	Output [W]	Speed [rpm]	Current [mA]	Torque [mNm]	Current [mA]			SOBL23-1207	Not applicable	23	12.0	5	1.23	1,714	105	0.5	2,160	111	8.54	587	TBD	32

Driver

Products	Voltage supply:VCC	Applicable motor types
SSD06-R5A	1.8~ 5.5	Sensorless brushless motors; BMN04-08XX, BMN07-12XX
SHSD24-01A	7.5~ 26.4	All Orbray brushless motors

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