SN3/SN4 Series AC Synchronous Motors
SN3/SN4 Series AC Synchronous Motors provide high performance in two frame sizes, NEMA 34 and 42 (90 and 110 mm). Resistor-capacitor kits are also available. These motors are driven economically from standard AC line voltage and the synchronous speed is related to the line frequency.
Limited availability outside North America
Features
- SN3 models: NEMA 34 (90 mm), three stack lengths with torque ratings from 198 to 636 N-cm (280 to 900 oz-in)
- SN4 models: NEMA 42 (110 mm), three stack lengths with torque ratings from 500 to 1059 N-cm (715 to 1500 oz-in)
- All models offer flying lead, terminal box, connector and shaft extension options
- 72 rpm motor speed (with 60 Hz voltage)
- Constant speed does not vary with load
- 120 volt AC models
- Fast starting, stopping and reversing
- Can be stalled indefinitely without overheating
- Standard connections include leaded, terminal box, MS connectors, rear shaft
Specifications
SN3 & SN4 Series
120 Volt, 60 Hz, Single Phase, 72 rpm
| Shaft Loading | Phase Shifting Components | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Model (1) | Rated Torque (2,3) | Load Inertia (2,3) | Rotor Inertia | Max. Pull-out Torque | Current @ 80% Pull-out Torque | Weight | Max. Radial Force (4) | Max. Axial Force (4) | Resistor | Capacitor (370 VAC) | |
| oz-in (Nm) | oz-in-s2(kg-cm2) | oz-in-s2(kg-cm2) | oz-in (Nm) | Arms/phase | lb (kg) | lb | lb | Ohms | Watts | µF | |
| SN31H | 280 (1.98) | 0.21 (14.8) | 0.0202 (1.4) | 410 (2.9) | 0.38 | 5.0 (2.27) | 65 | 305 | 200 | 50 | 6.0 |
| SN32H | 480 (3.39) | 0.29 (20.5) | 0.038 (2.7) | 690 (4.87) | 0.47 | 8.4 (3.81) | 65 | 305 | 200 | 50 | 10.0 |
| SN33H | 690 (4.87) | 0.53 (37.4) | 0.0567 (4.0) | 1015 (7.17) | 0.78 | 11.9 (5.39) | 110 | 305 | 100 | 100 | 10.0 |
| SN34H | 900 (6.36) | 0.53 (37.4) | 0.075 (5.3) | 1520 (10.73) | 1.43 | 15.1 (6.84) | 110 | 305 | 50 | 100 | 17.5 |
| SN41H | 715 (5.05) | 0.40 (28.2) | 0.0783 (5.5) | 1045 (7.38) | 0.8 | 11 (4.98) | 125 | 404 | 100 | 100 | 12.5 |
| SN42H | 1200 (8.47) | 0.82 (57.9) | 0.1546 (10.9) | 1580 (11.16) | 1.19 | 18.4 (8.34) | 110 | 404 | 75 | 100 | 20.0 |
| SN43H | 1500 (10.59) | 0.92 (64.9) | 0.2293 (16.2) | 2000 (14.12) | 1.5 | 25.7 (11.64) | 110 | 404 | 50 | 100 | 20.0 |
120 Volt, 50 Hz, Single Phase, 60 rpm
| Shaft Loading | Phase Shifting Components | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Model (1) | Rated Torque (2,3) | Load Inertia (2,3) | Rotor Inertia | Max. Pull-out Torque | Current @ 80% Pull-out Torque | Weight | Max. Radial Force (4) | Max. Axial Force (4) | Resistor | Capacitor (370 VAC) | |
| oz-in (Nm) | oz-in-s2(kg-cm2) | oz-in-s2(kg-cm2) | oz-in (Nm) | Arms/phase | lb (kg) | lb | lb | Ohms | Watts | µF | |
| SN31H | 375 (2.64) | 0.29 (20.5) | 0.0202 (1.4) | 490 (3.46) | 0.34 | 5.0 (2.27) | 65 | 305 | 150 | 25 | 2.0 |
| SN32H | 600 (4.24) | 0.52 (36.7) | 0.038 (2.7) | 870 (6.14) | 0.64 | 8.4 (3.81) | 65 | 305 | 100 | 50 | 4.0 |
| SN33H | 800 (5.65) | 0.60 (42.3) | 0.0567 (4.0) | 1120 (7.91) | 0.67 | 11.9 (5.39) | 110 | 305 | 100 | 50 | 4.0 |
| SN34H | 990 (6.99) | 0.53 (37.4) | 0.075 (5.3) | 1565 (11.05) | 1.1 | 15.1 (6.84) | 110 | 305 | 75 | 100 | 6.5 |
| SN41H | 700 (4.94) | 0.53 (37.4) | 0.0783 (5.5) | 1060 (7.49) | 0.71 | 11 (4.98) | 125 | 404 | 100 | 50 | 4.0 |
| SN42H | 1020 (7.22) | 1.16 (81.9) | 0.1546 (10.9) | 1575 (11.12) | 0.93 | 18.4 (8.34) | 110 | 404 | 100 | 100 | 6.5 |
| SN43H | 1440 (10.17) | 1.30 (91.8) | 0.2293 (16.2) | 2000 (14.12) | 1.6 | 25.7 (11.64) | 110 | 404 | 50 | 225 | 10.5 |
- Reference the "SN3/SN4 Synchronous motors datasheets and diagrams" document in the Media and Downloads section for full nomenclature options
- Rated Torque and Inertia are maximum values. The Rated Torque is the combination of load torque and friction torque. The Rated Inertia is a combination of the load inertia and the motor's Rotor Inertia
- Rated Torque and Inertia denote restart conditions with a stiff coupling of 0.3 arc-sec/oz-in. minimum
- Reference the "SN3/SN4 Synchronous motors datasheets and diagrams" document in the Media and Downloads section for shaft load and bearing fatigue life charts
Media & Downloads
| Title | Language | Date | Share URL |
|---|---|---|---|
| Kollmorgen Full-line Catalog | English | Share URLview | |
| Kollmorgen SN Synchronous Motor Selection Guide | English | Share URLview | |
| SN3/SN4 Synchronous Motors Datasheets & Diagrams | English | Share URLview |
These files cover the standard product family line. For environmental declarations for custom products, i.e. part numbers containing “S” or “X”, visit our Environmental Compliance search.
| Title | File Language | Date | Share URL |
|---|---|---|---|
| EU Declaration of Conformity PowerPac K-N-SN | English | |
Share URL /sites/default/files/public_downloads/Kollmorgen%20EU%20Declaration%20of%20Conformity%20PowerPac%20K-N-SN.pdf |
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