Brushless Motors

ES050A 50mm Brushless DC Motor

The ES050A series brushless DC motor is a high torque density model brushless motor with a slotless design in a NEMA 23 configuration. It is offered in a 3 motor lengths with continuous torque from 0.176 - 0.304 Nm.

Features:

Speeds up to 5,000 RPM
DC bus voltage up to 120 Vdc
NEMA 23 configuration
Eight standard windings - Special windings available
4 Pole Rare Earth design

Videos:
NEW! Pittman Express Motor Calculator Tutorial
How Motor Curves are Created and How to Use Them
When should a gearbox be used in your DC motor application?

Specifications +

MOTOR DATA	Units	ES050A-1	ES050A-2	ES050A-3
Max DC Terminal Voltage	V	120	120	120
Max Speed (Mechanical)	rpm	5000	5000	5000
Continuous Stall Torque	Nm	0.18	0.25	0.30
Continuous Stall Torque	oz-in	25	35	43
Peak Torque (Maximum)	Nm	0.54	0.77	0.94
Peak Torque (Maximum)	oz-in	76	110	130
Rotor Inertia	kg m2	0.000017	0.000028	0.000034
Rotor Inertia	oz-in-s2	0.0025	0.004	0.0048
Motor Weight	g	620	850	990
Motor Weight	oz	22	30	35

Dimensional Drawings +

Performance Curves +

ES050A-1 Speed Torque Performance Curve

S.O.A.C. = Safe Operating Area for Continuous duty

ES050A-2 Speed Torque Performance Curve

S.O.A.C. = Safe Operating Area for Continuous duty

ES050A-3 Speed Torque Performance Curve

S.O.A.C. = Safe Operating Area for Continuous duty

NOTE: All values specified at 25°C ambient temperature. Peak values are theoretical and for reference only.

Winding Performance Data +

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ES050A-1	Units
Rated Voltage	V	12	15.2	19.1	24.0	30.3	38.2	48.0	60.6
Rated Torque	Nm	0.16	0.16	0.16	0.16	0.16	0.16	0.16	0.16
Rated Torque	oz-in	23	23	22	22	22	22	22	22
Rated Speed	rpm	4480	4320	4460	4430	4490	4470	4430	4500
Rated Current	A	9.1	6.6	5.1	4.1	3.2	2.6	2.0	1.6
Rated Power	W	75	72	73	73	73	73	73	74
No Load Speed	rpm	5000	5000	5000	4980	5000	5000	4990	5000
No Load Current	A	0.47	0.34	0.27	0.22	0.17	0.14	0.11	0.086
Torque Constant	Nm/A	0.0209	0.0286	0.0361	0.0456	0.0570	0.0722	0.0911	0.114
Torque Constant	oz-in/A	2.96	4.04	5.11	6.46	8.07	10.2	12.9	16.1
Voltage Constant	V/krpm	2.19	2.99	3.78	4.78	5.97	7.56	9.54	11.9
Terminal Resistance	Ω	0.250	0.390	0.550	0.880	1.37	2.20	3.52	5.48
Inductance	mH	0.06	0.10	0.17	0.27	0.41	0.66	1.06	1.65
Peak Current	A	29	21	17	13	11	8.4	6.6	5.4

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ES050A-2	Units
Rated Voltage	V	15.2	19.1	24.0	30.3	38.2	48.0	60.6	76.4
Rated Torque	Nm	0.23	0.23	0.22	0.22	0.22	0.22	0.22	0.22
Rated Torque	oz-in	32	32	32	32	32	32	32	32
Rated Speed	rpm	4090	3860	3950	3940	3980	3930	3940	3980
Rated Current	A	8.8	6.4	5.0	4.0	3.2	2.5	2.0	1.6
Rated Power	W	97	92	92	92	93	92	93	93
No Load Speed	rpm	4760	4380	4350	4360	4390	4340	4370	4390
No Load Current	A	0.37	0.26	0.20	0.16	0.13	0.099	0.080	0.064
Torque Constant	Nm/A	0.0303	0.0413	0.0523	0.0660	0.0826	0.105	0.132	0.165
Torque Constant	oz-in/A	4.29	5.86	7.41	9.34	11.7	14.9	18.7	23.4
Voltage Constant	V/krpm	3.17	4.33	5.48	6.91	8.65	11.0	13.8	17.3
Terminal Resistance	Ω	0.290	0.460	0.660	1.06	1.65	2.66	4.25	6.62
Inductance	mH	0.08	0.13	0.21	0.34	0.53	0.86	1.37	2.13
Peak Current	A	28	21	16	13	10	8.1	6.6	5.1

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ES050A-3	Units
Rated Voltage	V	19.1	24.0	30.3	38.2	48.0	60.6	76.4	96.0
Rated Torque	Nm	0.28	0.28	0.27	0.27	0.27	0.27	0.27	0.27
Rated Torque	oz-in	39	39	39	39	39	39	39	39
Rated Speed	rpm	4120	3870	3950	3950	3970	3970	3950	3970
Rated Current	A	8.1	6.0	4.6	3.7	2.9	2.3	1.8	1.5
Rated Power	W	120	110	110	110	110	110	110	110
No Load Speed	rpm	4570	4220	4210	4200	4230	4220	4200	4230
No Load Current	A	0.31	0.22	0.17	0.14	0.11	0.085	0.067	0.054
Torque Constant	Nm/A	0.0397	0.0540	0.0685	0.0865	0.108	0.137	0.173	0.216
Torque Constant	oz-in/A	5.63	7.65	9.70	12.3	15.3	19.3	24.5	30.6
Voltage Constant	V/krpm	4.16	5.66	7.17	9.06	11.3	14.3	18.1	22.6
Terminal Resistance	Ω	0.330	0.530	0.760	1.21	1.90	3.03	4.85	7.60
Inductance	mH	0.09	0.16	0.26	0.41	0.65	1.03	1.65	2.58
Peak Current	A	26	19	15	12	9.6	7.5	6.0	4.8

Wiring Diagram +

Color	Signal
Brown	Phase A
Red	Phase B
Orange	Phase C
Grey	Hall 1
Blue	Hall 2
White	Hall 3
Violet	Hall +5 VDC
Black	Hall GND

Encoders +

E30C & E30D Encoder
The E30C & E30D optical incremental encoder was developed for volume OEM precision motion control applications and is the recommended encoder for the ES050A. The E30 offers a wide range of outputs, resolutions and connection solutions in a compact 30 mm by 8 mm size.

Features:

Resolutions from 200 to 2048
TTL Quadrature output
Frequency response to 220 kHz
Low power consumption, 5V @ 20mA max
Locking connector

Specifications

ENCODER DATA	SYMBOL	UNITS	E30C	E30D
Available Resolutions	-	-	200, 250, 256, 400, 500	500, 512, 1000, 1024, 2000, 2048
Output	-	-	2-Channel Quadrature	2-Channel Quadrature with Index
Output Interface	-	-	TTL Compatible	TTL Compatible
Supply Voltage	V_cc	VDC	4.5 to 5.5	4.5 to 5.5
Supply Current	I_cc	mA	20 max	20 max
High Level Output Voltage	V_OH	V	2.4 min	2.4 min
Low Level Output Voltage	V_OL	V	0.4 max	0.4 max
Max. Operating Frequency	f_max	kHz	40 (200-500 CPR)	55 (500-512 CPR)
				110 (1000-1024 CPR)
				220 (2000-2048 CPR)
Operating Temperature	θ_max	°C	-20 to +85	-20 to +85
Encoder Weight (Mass)	W_E	oz	0.2	0.2
Encoder Weight (Mass)	W_E	g	5.6	5.6

Dimensional Drawings

Connection Chart

PIN	COLOR	E30C	E30D	E30C¹	E30D¹
1	Black	Encoder Ground		Encoder Ground
2	White	V_cc		V_cc
3	Green/White	-		-	Index I̅
4	-	-		-
5	Blue/White	-		Channel A̅
6	Blue	Channel A		Channel A
7	Violet	Channel B		Channel B
8	Violet/White	-		Channel B̅
9	Green	-	Index	-	Index
10	Green/Yellow	Motor Ground		Motor Ground
E30C¹ & E30D¹: Optional Differential LD connections shown in grey

Recommended Encoder Data Sheets
E30C/D Encoder Data Sheet pdf

Gearboxes +

PLG52 Gearbox
The PLG52 is a 52 mm planetary gearbox suitable for servo applications where DC Servo brush or BLDC motor technology is specified. The PLG52 provides excellent efficiency in a compact and industry compatible output configuration.

Features:

Maximum Load torque up to 24 Nm
All steel gearing for high torque capacity
Dual ball bearings on output shaft to withstand high loads
High efficiency

Specifications

GEAR DATA	UNITS	PLG52	PLG52	PLG52	PLG52	PLG52	PLG52	PLG52
GEAR DATA	UNITS	4.5:1	6.25:1	15:1	20.2:1	28.1:1	36:1	50:1
Maximum Load	Nm	1.2	1.2	8	8	8	8	8
Maximum Load	oz-in	170	170	1133	1133	1133	1133	1133
Weight (Mass)	g	560	560	720	720	720	720	720
Weight (Mass)	oz	19.8	19.8	25.4	25.4	25.4	25.4	25.4
Length (L_G)	mm	50.0	50.0	65.5	65.5	65.5	65.5	65.5
Length (L_G)	in	1.97	1.97	2.58	2.58	2.58	2.58	2.58
Stages	-	1	1	2	2	2	2	2
Ratio	-	4.5/1	6.25/1	15/1	20.25/1	28.12/1	36/1	50/1
Efficiency	-	0.90	0.90	0.81	0.81	0.81	0.81	0.81
Shaft Rotation	-	CW	CW	CW	CW	CW	CW	CW

GEAR DATA	UNITS	PLG52	PLG52	PLG52	PLG52	PLG52	PLG52
GEAR DATA	UNITS	91.1:1	126.5:1	162:1	225:1	288:1	400:1
Maximum Load	Nm	24	24	24	24	24	24
Maximum Load	oz-in	3399	3399	3399	3399	3399	3399
Weight (Mass)	g	880	880	880	880	880	880
Weight (Mass)	oz	31.0	31.0	31.0	31.0	31.0	31.0
Length (L_G)	mm	80.5	80.5	80.5	80.5	80.5	80.5
Length (L_G)	in	3.17	3.17	3.17	3.17	3.17	3.17
Stages	-	3	3	3	3	3	3
Ratio	-	91.12/1	126.5/1	162/1	225/1	288/1	400/1
Efficiency	-	0.73	0.73	0.73	0.73	0.73	0.73
Shaft Rotation	-	CW	CW	CW	CW	CW	CW

Dimensional Drawings

Combined Length

PLG52 Gearmotor
Motor	Length L_GM mm
Stage	1	2	3
ES050A-1	131.8	147.3	162.3
ES050A-2	144.5	160.0	175.0
ES050A-3	157.2	172.7	187.7

Drives +

Recommended Drives
PBL4850E

Alternate Drives
BGE6010