H u d s o n M a n u a l / R e v . 1 . 2 1
2 3
T
EKNIC
,
I
NC
.
P H O N E ( 5 8 5 ) 7 8 4 - 7 4 5 4
Appendix B: NEMA 23 Specifications
SPECIFICATIONS
Insulation Rating:
Class H, 180°C
Motor Poles:
8
Standard Shaft Diameter:
0.375 in., 9.5 mm
Motor Pigtail Type:
Space saving, single-exit, DualShield™
Motor Pigtail Length:
16 in ± 1 in.., 406.4 mm ± 25.4 mm.
GENERAL
RoHS:
RoHS Compliant
Shock:
2.0 G
Vibration:
0.5 G
Max External Deceleration:
250,000 rad/s
2
Max Case Temperature:
85°C
Max Winding Temperature:
155°C
Storage Temperature:
-20 to 85°C
Humidity, non-condensing:
0-95%
ENVIRONMENTAL
Operating Conditions:
No direct fluid wash-down or submerged use
Type:
Floating optical disk; single-ended or differential signals
Resolution(s):
2000, 4000, 8000, 16000 counts/rev (post-quad)
Current Draw, Loaded:
180mA @ 5VDC, all signals loaded with 200
Ω
load
Current Draw, Unloaded:
125mA @ 5VDC
ENCODER
Max Quadrature Error:
60°
COMMUTATION
Commutation Type:
120° spaced, optical commutation (Hall) sensors
Bearing Type:
Oversized, single-row, deep groove, radial with non-contacting
lubrication seals.
MECHANICAL LOADING
Bearing Life vs. Load:
Depending on the specific motor model, typical bearing life is
approximately 3.2 x10
9
to 5.0 x10
9
revolutions (based on 5 lb axial and 25
lb radial loads, centered 1.0 inch from front bearing surface).
Shaft Axial Force Limits:
See chart on page 7.
WARRANTY
3½ years
INDIVIDUAL
SPECIFICATIONS
Model
2311
2311
2321
2321
2331
2331
2341
2341
Electrical interface option
S/E P/C S/E P/C S/E P/C S/E P/C
Resistance, phase to phase, [
ohms
]
2.76
0.69
2.46
0.62
2.42
0.61
2.98
0.75
Inductance,
phase
to
phase,
[mH]
2.93 0.733 3.66 0.92 3.55 0.89 4.59 1.15
Electrical time constant, [mS]
1.06
1.06
1.49
1.49
1.47
1.47
1.54
1.54
Back
EMF
(Ke),
[Vpeak/kRPM]
13.27 6.64 23.29 11.65 27.31 13.65 36.4 18.2
Motor constant (Kt), [oz-in/amp] p-p
16.74
8.37
28.4
14.2
35.82
17.91
47.8
23.9
Continuous torque [oz-in]
1,2
60
60
116
116
145
145
186
186
Weight [oz, g]
22.1, 626
32.8, 929
44.2, 1253
54.1, 1533
1:
Typical, varies by application – contact your sales engineer for application specific rating.
2:
The P and S electrical interface option (Molex Mini-Fit Jr. connectors) limits the continuous current
capacity to 10 amps RMS, which in turn, limits continuous torque capacity.
For more continuous torque use the C or E electrical interface option (Souriau Trim-Trio connectors)
