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SN3/SN4 Series AC Synchronous Motors

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.

Get a Quote Selection Guide

Global
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
  1. Reference the "SN3/SN4 Synchronous motors datasheets and diagrams" document in the Media and Downloads section for full nomenclature options
  2. 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
  3. Rated Torque and Inertia denote restart conditions with a stiff coupling of 0.3 arc-sec/oz-in. minimum
  4. 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 Catalogo Automazione e Motion Control IT Italian Share URLview
Kollmorgen Full-line Catalog English Share URLview
Kollmorgen otomasyon ve hareket kontrol çözümleri kataloğu TR Turkish Share URLview
Kollmorgen SN Synchronous Motor Selection Guide English Share URLview
SN3/SN4 Synchronous Motors Datasheets & Diagrams English Share URLview
Stepper and Synchronous Motors Catalog EN Rev C English Share URLview
科尔摩根运动控制及伺服系统解决方案 Chinese, Simplified Share URLview
Title File Language Date Share URL
Blue Guide English, German
Share URL https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=OJ%3AC%3A2022%3A247%3ATOC
Kollmorgen 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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