Brushed DC Motors

DC040B 40mm Brushed DC Motor

The DC040B series brush commutated DC motor is a 40 mm diameter unit offered in 6 lengths with continuous output torques of 0.017 to 0.081 Nm.

Features:

Speeds up to 8,000 RPM possible
DC bus voltage up to 48 Vdc
Eight standard windings - Special windings available
2 pole stator with ceramic magnets
7 slot skewed armature cogging reduction
Sintered bronze bearings - ball bearings available
Copper graphite brushed - RFI suppression available

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

Specifications +

MOTOR DATA	Units	DC040B-1	DC040B-2	DC040B-3	DC040B-4	DC040B-5	DC040B-6
Max DC Terminal Voltage	V	48	48	48	48	48	48
Max Speed (Mechanical)	rpm	8000	8000	8000	8000	7000	7000
Continuous Stall Torque	Nm	0.017	0.033	0.043	0.049	0.067	0.081
Continuous Stall Torque	oz-in	2.4	4.7	6.1	6.9	9.5	12
Peak Torque (Maximum)	Nm	0.086	0.20	0.26	0.32	0.40	0.50
Peak Torque (Maximum)	oz-in	12	28	37	45	56	71
Rotor Inertia	kg m2	0.0000019	0.0000032	0.0000042	0.0000056	0.0000071	0.0000085
Rotor Inertia	oz-in-s2	0.00027	0.00046	0.00059	0.00079	0.0010	0.0012
Motor Weight	g	200	250	290	340	390	440
Motor Weight	oz	7.0	8.9	10	12	14	16

Dimensional Drawings +

Performance Curves +

DC040B-1 Speed Torque Performance Curve

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

DC040B-2 Speed Torque Performance Curve

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

DC040B-3 Speed Torque Performance Curve

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

DC040B-4 Speed Torque Performance Curve

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

DC040B-5 Speed Torque Performance Curve

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

DC040B-6 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 +

Page-ada0647c-23d1-4fea-b3da-989c83d92b54

DC040B-1	Units
Rated Voltage	V	9.55	12.0	15.2	19.1	24.0	30.3	38.2	48.0
Rated Torque	Nm	0.010	0.0099	0.0095	0.0094	0.0093	0.0092	0.0092	0.0092
Rated Torque	oz-in	1.5	1.4	1.3	1.3	1.3	1.3	1.3	1.3
Rated Speed	rpm	6020	6080	6230	6230	6260	6320	6300	6290
Rated Current	A	1.4	1.1	0.83	0.65	0.51	0.40	0.32	0.25
Rated Power	W	6.5	6.3	6.2	6.1	6.1	6.1	6.0	6.0
No Load Speed	rpm	6930	6850	6910	6880	6890	6910	6880	6880
No Load Current	A	0.40	0.32	0.25	0.20	0.16	0.13	0.099	0.079
Torque Constant	Nm/A	0.0122	0.0156	0.0196	0.0247	0.0310	0.0391	0.0495	0.0622
Torque Constant	oz-in/A	1.73	2.20	2.77	3.50	4.39	5.53	7.00	8.80
Voltage Constant	V/krpm	1.28	1.63	2.05	2.59	3.25	4.09	5.18	6.51
Terminal Resistance	Ω	1.25	1.93	2.99	4.70	7.38	11.6	18.5	29.2
Inductance	mH	0.72	1.16	1.83	2.94	4.64	7.34	11.74	18.56
Peak Current	A	7.6	6.2	5.1	4.1	3.3	2.6	2.1	1.6

Page-3de68143-c00e-4c9a-96f2-a6750ee803ed

DC040B-2	Units
Rated Voltage	V	9.55	12.0	15.2	19.1	24.0	30.3	38.2	48.0
Rated Torque	Nm	0.026	0.025	0.024	0.024	0.024	0.023	0.023	0.023
Rated Torque	oz-in	3.6	3.5	3.4	3.4	3.3	3.3	3.3	3.3
Rated Speed	rpm	5000	5100	5300	5310	5350	5360	5390	5390
Rated Current	A	2.4	1.8	1.4	1.1	0.89	0.70	0.55	0.44
Rated Power	W	13	13	13	13	13	13	13	13
No Load Speed	rpm	5870	5810	5920	5870	5880	5860	5880	5880
No Load Current	A	0.38	0.30	0.25	0.19	0.16	0.12	0.095	0.076
Torque Constant	Nm/A	0.0148	0.0188	0.0234	0.0297	0.0372	0.0472	0.0593	0.0746
Torque Constant	oz-in/A	2.10	2.66	3.31	4.21	5.27	6.68	8.40	10.6
Voltage Constant	V/krpm	1.55	1.97	2.45	3.11	3.90	4.94	6.21	7.81
Terminal Resistance	Ω	0.720	1.08	1.63	2.53	3.94	6.21	9.78	15.4
Inductance	mH	0.52	0.84	1.29	2.08	3.29	5.27	8.32	13.16
Peak Current	A	13	11	9.3	7.5	6.1	4.9	3.9	3.1

Page-7862e4ac-2e08-4089-a0d1-c670d3614910

DC040B-3	Units
Rated Voltage	V	9.55	12.0	15.2	19.1	24.0	30.3	38.2	48.0
Rated Torque	Nm	0.035	0.034	0.034	0.033	0.033	0.033	0.032	0.032
Rated Torque	oz-in	5.0	4.9	4.8	4.7	4.7	4.6	4.6	4.6
Rated Speed	rpm	5030	5170	5280	5450	5430	5480	5490	5490
Rated Current	A	3.2	2.5	1.9	1.5	1.2	0.95	0.75	0.59
Rated Power	W	19	19	19	19	19	19	19	19
No Load Speed	rpm	6050	6020	6000	6090	6030	6050	6040	6030
No Load Current	A	0.41	0.33	0.26	0.21	0.17	0.13	0.11	0.081
Torque Constant	Nm/A	0.0144	0.0182	0.0232	0.0287	0.0365	0.0459	0.0581	0.0731
Torque Constant	oz-in/A	2.04	2.58	3.29	4.07	5.17	6.50	8.22	10.3
Voltage Constant	V/krpm	1.51	1.91	2.43	3.01	3.82	4.81	6.08	7.65
Terminal Resistance	Ω	0.560	0.830	1.26	1.89	2.96	4.62	7.30	11.5
Inductance	mH	0.39	0.63	1.02	1.56	2.51	3.97	6.35	10.04
Peak Current	A	17	14	12	10	8.1	6.6	5.2	4.2

Page-b389a809-f369-4720-9616-b4d57fffd075

DC040B-4	Units
Rated Voltage	V	9.55	12.0	15.2	19.1	24.0	30.3	38.2	48.0
Rated Torque	Nm	0.040	0.038	0.037	0.037	0.036	0.036	0.036	0.036
Rated Torque	oz-in	5.6	5.4	5.3	5.2	5.1	5.1	5.0	5.0
Rated Speed	rpm	5160	5480	5640	5660	5810	5810	5850	5820
Rated Current	A	3.7	2.9	2.2	1.7	1.4	1.1	0.86	0.68
Rated Power	W	22	22	22	22	22	22	22	22
No Load Speed	rpm	6180	6290	6290	6220	6320	6280	6310	6260
No Load Current	A	0.47	0.38	0.30	0.24	0.19	0.15	0.12	0.094
Torque Constant	Nm/A	0.0141	0.0175	0.0222	0.0282	0.0349	0.0443	0.0557	0.0705
Torque Constant	oz-in/A	2.00	2.47	3.14	3.99	4.94	6.27	7.88	9.98
Voltage Constant	V/krpm	1.48	1.83	2.32	2.95	3.65	4.64	5.83	7.38
Terminal Resistance	Ω	0.480	0.680	1.02	1.56	2.37	3.72	5.83	9.23
Inductance	mH	0.33	0.51	0.82	1.33	2.05	3.30	5.21	8.35
Peak Current	A	20	18	15	12	10	8.1	6.6	5.2

Page-6cd5a532-3d6a-4582-8039-7a6e1848f987

DC040B-5	Units
Rated Voltage	V	9.55	12.0	15.2	19.1	24.0	30.3	38.2	48.0
Rated Torque	Nm	0.059	0.057	0.056	0.056	0.055	0.055	0.055	0.055
Rated Torque	oz-in	8.3	8.1	8.0	7.9	7.8	7.8	7.8	7.8
Rated Speed	rpm	3730	3980	4090	4110	4210	4230	4250	4230
Rated Current	A	4.0	3.2	2.5	1.9	1.6	1.2	0.96	0.76
Rated Power	W	23	24	24	24	24	24	24	24
No Load Speed	rpm	4720	4810	4800	4750	4820	4800	4810	4780
No Load Current	A	0.40	0.33	0.26	0.21	0.17	0.13	0.11	0.081
Torque Constant	Nm/A	0.0185	0.0229	0.0291	0.0370	0.0458	0.0582	0.0731	0.0925
Torque Constant	oz-in/A	2.62	3.25	4.12	5.23	6.49	8.24	10.4	13.1
Voltage Constant	V/krpm	1.94	2.40	3.05	3.87	4.80	6.09	7.66	9.69
Terminal Resistance	Ω	0.500	0.710	1.07	1.64	2.49	3.91	6.14	9.72
Inductance	mH	0.43	0.66	1.06	1.72	2.63	4.24	6.70	10.70
Peak Current	A	19	17	14	12	9.6	7.7	6.2	4.9

Page-10ef56d0-06ba-4e46-9377-69ce66d56fb0

DC040B-6	Units
Rated Voltage	V	12.0	15.2	19.1	24.0	30.3	38.2	48.0	48.0
Rated Torque	Nm	0.071	0.070	0.069	0.068	0.068	0.068	0.068	0.072
Rated Torque	oz-in	10	9.9	9.8	9.7	9.6	9.6	9.6	10
Rated Speed	rpm	4260	4540	4590	4590	4730	4730	4720	3390
Rated Current	A	4.2	3.3	2.6	2.0	1.6	1.3	1.0	0.85
Rated Power	W	32	33	33	33	34	34	33	26
No Load Speed	rpm	5210	5330	5290	5220	5330	5310	5270	4170
No Load Current	A	0.37	0.30	0.24	0.19	0.15	0.12	0.092	0.069
Torque Constant	Nm/A	0.0212	0.0263	0.0333	0.0424	0.0524	0.0664	0.0840	0.106
Torque Constant	oz-in/A	3.00	3.72	4.72	6.00	7.42	9.40	11.9	15.0
Voltage Constant	V/krpm	2.22	2.75	3.49	4.44	5.49	6.95	8.80	11.1
Terminal Resistance	Ω	0.550	0.790	1.20	1.85	2.82	4.45	6.98	11.1
Inductance	mH	0.49	0.75	1.21	1.97	3.01	4.85	7.67	12.28
Peak Current	A	22	19	16	13	11	8.6	6.9	4.3

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 DC040B. 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 CPR
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

Gearboxes +

G30A Gear
The G30A is a 30mm planetary gearbox suitable for servo applications where DC Servo brush or BLDC motor technology is specified. The G30A provides maximum efficiency, minimum backlash, has a smaller mechanical footprint and is available with round and square mounting endbell configurations.

Features:

Sintered metal gears for high torque capacity
Sintered metal output bearing

Specifications

GEAR DATA	UNITS	G30A 4:1	G30A 6:1	G30A 16:1	G30A 24:1	G30A 36:1	G30A 64:1	G30A 96:1
Maximum Load	Nm	2.47	2.47	3.53	3.53	3.53	6.5	6.5
Maximum Load	oz-in	350	350	500	500	500	920	920
Weight (Mass)	g	110.6	110.6	124.7	124.7	124.7	138.9	138.9
Weight (Mass)	oz	3.9	3.9	4.4	4.4	4.4	4.9	4.9
Length (L_G)	mm	32.64	32.64	38.48	38.48	38.48	44.32	44.32
Length (L_G)	in	1.285	1.285	1.515	1.515	1.515	1.745	1.745
Stages	-	1	1	2	2	2	3	3
Ratio	-	4/1	6/1	16/1	24/1	36/1	64/1	96/1
Efficiency	-	0.9	0.9	0.81	0.81	0.81	0.73	0.73
Shaft Rotation	-	CW	CW	CW	CW	CW	CW	CW

GEAR DATA	UNITS	G30A 144:1	G30A 216:1	G30A 256:1	G30A 384:1	G30A 576:1	G30A 864:1	G30A 1296:1
Maximum Load	Nm	6.5	6.5	8.83	8.83	8.83	8.83	8.83
Maximum Load	oz-in	920	920	1250	1250	1250	1250	1250
Weight (Mass)	g	138.9	138.9	155.9	155.9	155.9	155.9	155.9
Weight (Mass)	oz	4.9	4.9	5.5	5.5	5.5	5.5	5.5
Length (L_G)	mm	44.32	44.32	50.17	50.17	50.17	50.17	50.17
Length (L_G)	in	1.745	1.745	1.975	1.975	1.975	1.975	1.975
Stages	-	3	3	4	4	4	4	4
Ratio	-	144/1	216/1	256/1	384/1	576/1	864/1	1296/1
Efficiency	-	0.73	0.73	0.66	0.66	0.66	0.66	0.66
Shaft Rotation	-	CW	CW	CW	CW	CW	CW	CW

Dimensional Drawings

Combined Length

G30A Gearmotor
Motor	Length L_GMmm
Stage	1	2	3	4
DC040B-1	79.1	84.9	90.8	96.6
DC040B-2	88.6	94.4	100.3	106.1
DC040B-3	93.7	99.5	105.4	111.2
DC040B-4	101.3	107.1	113.0	118.8
DC040B-5	110.2	116.0	121.9	127.7
DC040B-6	117.8	123.6	129.5	135.3

G51A Gear
The G51A is an economical 51 mm offset spur gearbox suitable for lower torque applications. The wide range of sintered steel gears combinations especially complement brushed motors when speed reduction in required. The G51A is also available in high torque or wide faced gears for increased output loads.

Features:

Maximum Load torque up to 1.24 Nm in the standard model
Load increased to 2.12 Nm in the high torque and up to 3.53 in wide face versions
Standard bronze bearings

Optional:

Special lubrication for extreme conditions
Ball bearings for high radial loads
Delrin gears for noise reduction

G51A Standard Specifications

GEAR DATA	UNITS	G51A 5.9:1	G51A 11.5:1	G51A 19.7:1	G51A 38.3:1	G51A 65.5:1	G51A 127.8:1
Maximum Load	Nm	1.236	1.236	1.236	1.236	1.236	1.236
Maximum Load	oz-in	175	175	175	175	175	175
Weight (Mass)	g	167.3	167.3	177.5	177.5	187.7	187.7
Weight (Mass)	oz	5.9	2.9	6.26	6.26	6.62	6.62
Length (L_G)	mm	34.9	34.9	34.9	34.9	34.9	34.9
Length (L_G)	in	1.373	1.373	1.373	1.373	1.373	1.373
Stages	-	1	1	1	1	1	1
Ratio	-	5.9:1	11.5:1	19.7:1	38.3:1	65.5:1	127.8:1
Efficiency	-	0.81	0.81	0.73	0.73	0.66	0.66
Shaft Rotation	-	CW	CW	CCW	CCW	CW	CW

GEAR DATA	UNITS	G51A 218.4:1	G51A 425.9:1	G51A 728.1:1	G51A 1419.8:1	G51A 2426.9:1	G51A 4732.5:1
Maximum Load	Nm	1.236	1.236	1.236	1.236	1.236	1.236
Maximum Load	oz-in	175	175	175	175	175	175
Weight (Mass)	g	197.9	197.9	208.1	208.1	231.9	231.9
Weight (Mass)	oz	6.98	6.98	7.34	7.34	8.18	8.18
Length (L_G)	mm	34.9	34.9	34.9	34.9	38.8	38.8
Length (L_G)	in	1.373	1.373	1.373	1.373	1.528	1.528
Stages	-	1	1	1	1	2	2
Ratio	-	218.4:1	425.9:1	728.1:1	1419.8:1	2426.9:1	4732.5:1
Efficiency	-	0.59	0.59	0.53	0.53	0.48	0.48
Shaft Rotation	-	CCW	CCW	CW	CW	CCW	CCW

G51A High Torque Specifications

GEAR DATA	UNITS	G51A-HT 5.9:1	G51A-HT 11.5:1	G51A-HT 19.7:1	G51A-HT 38.3:1	G51A-HT 65.5:1	G51A-HT 127.8:1
Maximum Load	Nm	2.118	2.118	2.118	2.118	2.118	2.118
Maximum Load	oz-in	300	300	300	300	300	300
Weight (Mass)	g	167.30	167.3	177.5	177.5	187.7	187.7
Weight (Mass)	oz	5.90	5.9	6.26	6.26	6.62	6.62
Length (L_G)	mm	34.9	34.9	34.9	34.9	34.9	34.9
Length (L_G)	in	1.373	1.373	1.373	1.373	1.373	1.373
Stages	-	1	1	1	1	1	1
Ratio	-	5.9:1	11.5:1	19.7:1	38.3:1	65.5:1	127.8:1
Efficiency	-	0.81	0.81	0.73	0.73	0.66	0.66
Shaft Rotation	-	CW	CW	CCW	CCW	CW	CW

GEAR DATA	UNITS	G51A-HT 218.4:1	G51A-HT 425.9:1	G51A-HT 728.1:1	G51A-HT 1419.8:1	G51A-HT 2426.9:1	G51A-HT 4732.5:1
Maximum Load	Nm	2.118	2.118	2.118	2.118	2.118	2.118
Maximum Load	oz-in	300	300	300	300	300	300
Weight (Mass)	g	197.9	197.9	208.1	208.1	231.9	231.9
Weight (Mass)	oz	6.98	6.98	7.34	7.34	8.18	8.18
Length (L_G)	mm	34.9	34.9	34.9	34.9	38.8	38.8
Length (L_G)	in	1.373	1.373	1.373	1.373	1.528	1.528
Stages	-	1	1	1	1	2	2
Ratio	-	218.4:1	425.9:1	728.1:1	1419.8:1	2426.9:1	4732.5:1
Efficiency	-	0.59	0.59	0.53	0.53	0.48	0.48
Shaft Rotation	-	CCW	CCW	CW	CW	CCW	CCW

G51A Wide Face Specifications

GEAR DATA	UNITS	G51A-WF 19.7:1	G51A-WF 38.3:1	G51A-WF 65.5:1	G51A-WF 127.8:1
Maximum Load	Nm	3.53	3.53	3.53	3.53
Maximum Load	oz-in	500	500	500	500
Weight (Mass)	g	184.8	184.8	195	195
Weight (Mass)	oz	6.52	6.52	6.88	6.88
Length (L_G)	mm	34.9	34.9	34.9	34.9
Length (L_G)	in	1.373	1.373	1.373	1.373
Stages	-	1	1	1	1
Ratio	-	19.7:1	38.3:1	65.5:1	127.8:1
Efficiency	-	0.73	0.73	0.66	0.66
Shaft Rotation	-	CCW	CCW	CW	CW

GEAR DATA	UNITS	G51A-WF 218.4:1	G51A-WF 425.9:1	G51A-WF 728.1:1	G51A-WF 1419.8:1
Maximum Load	Nm	3.53	3.53	3.53	3.53
Maximum Load	oz-in	500	500	500	500
Weight (Mass)	g	205.3	205.3	229.1	229.1
Weight (Mass)	oz	7.24	7.24	8.08	8.08
Length (L_G)	mm	34.9	34.9	38.8	38.8
Length (L_G)	in	1.373	1.373	1.53	1.53
Stages	-	1	1	2	2
Ratio	-	218.4:1	425.9:1	728.1:1	1419.8:1
Efficiency	-	0.59	0.59	0.53	0.53
Shaft Rotation	-	CCW	CCW	CW	CW

Dimensional Drawings

G51A Gearmotor (Standard, High Torque, Wide Face) Combined Length
Motor	Length L_GMmm
Stage	1	2
DC040B-1	78.8	82.7
DC040B-2	88.3	92.2
DC040B-3	93.4	97.3
DC040B-4	101.0	104.9
DC040B-5	109.9	113.8
DC040B-6	117.5	121.4

Recommended Gearbox Data Sheets
G30A Gearbox Sheet pdf
G51A Gearbox Standard/ High Torque/ Wide Face Sheet pdf

Alternate Gearbox Data Sheets
G40A Gearbox Sheet pdf
PLG42S Gearbox Sheet pdf

Brakes +

B30A Brake
The B30A power off, fail safe holding brake is designed to hold a load in position when power is removed from the motor and brake. This compact 30mm brake has a holding torque of 0.113 Nm (1 Lb-in). The B30A is typically mounted to the motor rear.

Features:

Holding torque of 0.113 Nm
Factory-set Air Gap
Low profile mounting plate
Rigid molded friction disk

Salient Characteristics

BRAKE DATA	UNITS	12V	19V	24V	30V
Applied Voltage	Vdc	12	19	24	30
Holding Torque	Nm	0.113	0.113	0.113	0.113
Holding Torque	lb-in	1.0	1.0	1.0	1.0
Current	A	0.33	0.21	0.17	0.13
Resistance	Ohms	36	90	134	219
Inertia	Kg-m²	1.0E-07	1.0E-07	1.0E-07	1.0E-07
Inertia	oz-in-sec²	1.4E-05	1.4E-05	1.4E-05	1.4E-05
Weight (Mass)	Kg	0.0625	0.0625	0.0625	0.0625
Weight (Mass)	Lbs	0.14	0.14	0.14	0.14

Dimensional Drawings

Recommended Brake Data Sheets
B30A Brake Data Sheet pdf

Alternate Brake Data Sheets
B49A Brake Data Sheet pdf

Brushed DC Motors

DC040B 40mm Brushed DC Motor

Specifications +

Dimensional Drawings +

Performance Curves +

Winding Performance Data +

Encoders +

Gearboxes +

Brakes +