No part of this manual shall be copied, reproduced, or transmitted in any way without the prior, written consent of Automationdirect.com™ Incorporated. AutomationDirect retains the exclusive rights to all information included in this document. IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page W–1...
Nulle partie de ce manuel ne doit être copiée, reproduite ou transmise de quelque façon que ce soit sans le consentement préalable écrit de la société Automationdirect.com™ Incorporated. AutomationDirect conserve les droits exclusifs à l’égard de tous les renseignements contenus dans le présent document. Page W–2 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
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MTDP Open Drip-proof motors added. 10th Ed., Rev. A 01/06/2021 MTDP specification changes (affects motors manufactured after September 2020), Chapter 1 11th Ed. 06/29/2022 MTRJ Jet Pump motors added IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page H–1...
Safety Information 2–2 Danger! 2–2 Wiring Notes: PLEASE READ PRIOR TO INSTALLATION. 2–2 Applicable Codes 2–2 Motor Dimensions 2–3 (Dimensions = inches) 2–3 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page TOC–1...
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Voltage Spike Considerations for AC Drive Control 5–3 Radial Overhung Load 5–4 F1 and F2 Mounting 5–5 Junction Box Dimensions 5–6 Minimum Sheave Diameters 5–7 Decibel Levels 5–8 Page TOC–2 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
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MTF Farm-Duty T-Frame Single-Phase Motors – Features and Specifications 6–50 Motor Dimensions 6–51 MTF T-Frame Single-phase Farm-Duty Motor Dimensions 6–51 Terminal and Wiring Diagrams 6–51 Replacement Parts 6–52 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page TOC–3...
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Table of Contents ® Capacitors and Centrifugal Switches for IronHorse Single-Phase Motors 6–52 Spare/Replacement Parts for MTF Single-Phase Farm-Duty Motors 6–52 Junction Box Dimensions 6–53 Page TOC–4 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
Its ImmedIAte RIGht WIll be A WARNING hIs INfoRmAtIoN could pReveNt INjuRy loss of pRopeRty oR eveN deAth IN extReme cAses Page 1–2 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
Note: Please review the AutomationDirect Terms & Conditions for warranty and service on this product. NOTE: *56HC are suitable for 56C C-face mounting or 56, 143T, or 145T frame foot mounting dimensions. Page 1–4 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
Pecifications IronHorse® MTRJ Jet Pump motors range in size from 1/3 - 2 HP at 3600 RPM. All models come in a 56J frame size in a Totally Enclosed Fan Cooled (TEFC) Enclosure with IP43 protection. ac o...
78�1 19�2/17�4/8�7* *These specifications apply to motors manufactured after September 2020 Note: Please review the AutomationDirect Terms & Conditions for warranty and service on this product. IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 1–7...
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Note: Please review the AutomationDirect Terms & Conditions for warranty and service on this product. NOTE: *56HC are suitable for 56C C-face mounting or 56, 143T, or 145T frame foot mounting dimensions. Page 1–10 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
Pecifications IronHorse® MTRJ Jet Pump motors range in size from 1/3 - 3 HP at 3600 RPM. All models come in a 56J frame size in a Totally Enclosed Fan Cooled (TEFC) Enclosure with IP43 protection. ac o...
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Cast-Iron T-Frame Cast-Iron TC-Frame IronHorse cast-iron industrial-duty Premium Efficiency motors are available in T-frame housings at speeds of 1200, 1800, and 3600 rpm, and in TC-frame housings at speeds of 1800 rpm. Optional C-face kits are available for IronHorse T-frame Premium Efficiency motors. (Premium Efficiency C-face kits are NOT compatible with EPAct motors.) All models have a TEFC frame and full length mounting feet.
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4) The service factor changes from 1.25 to 1.0 under the following conditions: • When running the motor at 208VAC @ 60Hz • When running the motor at 200/400VAC @ 50Hz • When used with a VFD Page 1–14 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
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2) The service factor changes from 1.25 to 1.0 under the following conditions: • When running the motor at 208VAC @ 60Hz • When running the motor at 200/400VAC @ 50Hz • When used with a VFD IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 1–15...
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1790 89�5 2250 96�2 0�85 64�3 MTCP2-250-3D18 1790 89�5 2250 96�2 0�87 78�8 MTCP2-300-3D18 1790 89�5 2250 96�2 0�87 94�1 *** TABLE CONTINUED NEXT PAGE *** Page 1–16 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
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MTCP2-200-3BD18 144/72 458/229 2900/1450 997�90 1467�50 MTCP2-250-3D18 91�9 1825 1546�00 2009�80 MTCP2-300-3D18 2200 1760�00 2200�00 1) Current @460V (Amps) only. *** TABLE CONTINUED NEXT PAGE *** IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 1–17...
Jet Pump Cast-iron frame AC Motor w Stainless-steel frame Open Drip Proof AC Motor IP69K SS TEFC AC Motor IP69K SS TENV IronHorse Motors Series Designation Page 1–26 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
• IronHorse MTSS stainless steel motors carry a one year warranty from the date of invoice� • All other IronHorse motors (except MTSS) carry a two year warranty from the date of invoice� For motors 40hp and smaller, valid warranty claims will be resolved by product replacement. Motors 50hp and larger must be evaluated by an authorized Electrical Apparatus Service Association (EASA) service center.
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Initial Startup Inspection 2–20 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
National Electrical Code (NEC) and the Canadian Electrical Code (CEC). Because IronHorse, MTDP and MTF2 motors are UL recognized, it is the responsibility of the user to insure that the installation complies with the conditions of acceptability as specified in the UR file.
PART NUMBER DIM. C PART NUMBER DIM. C MTR2-P33-1AB18 11.90 MTR2-P75-1AB18 12.40 MTR2-P33-1AB36 11.90 MTR2-P75-1AB36 11.90 MTR2-P50-1AB18 11.90 MTR2-001-1AB18 12.90 MTR2-P50-1AB36 11.90 MTR2-001-1AB36 12.40 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 2–3...
(F2 mounting = conduit entrance on right side facing shaft.) *** Frame sizes 143T(C) and 145T(C) have no lifting eyelet. **** TABLE CONTINUED NEXT PAGE (for dimensions F1–U) **** IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 2–7...
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** AA dimension is conduit fitting size. F1 mounting shown; some frame sizes are F1/F2 convertible; refer to T-frame “Motor Specifications” table. (F2 mounting = conduit entrance on right side facing shaft.) *** Frame sizes 143T(C) and 145T(C) have no lifting eyelet. Page 2–8 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
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(F2 mounting = conduit entrance on right side facing shaft.) *** Frame sizes 143T(C) and 145T(C) have no lifting eyelet. **** TABLE CONTINUED NEXT PAGE (for dimensions F1–U) **** IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 2–9...
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** AA dimension is conduit fitting size. F1 mounting shown; some frame sizes are F1/F2 convertible; refer to T-frame “Motor Specifications” table. (F2 mounting = conduit entrance on right side facing shaft.) *** Frame sizes 143T(C) and 145T(C) have no lifting eyelet. Page 2–10 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
(F2 mounting = conduit entrance on right side facing shaft.) *** Frame sizes 143T(C) and 145T(C) have no lifting eyelet. **** TABLE CONTINUED NEXT PAGE (for dimensions D–U) **** IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 2–11...
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** AA dimension is conduit fitting size. F1 mounting shown; some frame sizes are F1/F2 convertible; refer to T-frame “Motor Specifications” table. (F2 mounting = conduit entrance on right side facing shaft.) *** Frame sizes 143T(C) and 145T(C) have no lifting eyelet. Page 2–12 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
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Line 2 Red (T8) Red (T8) Acceptable for Field Wiring Rotation CW-OPE to reverse either voltage Interchange Black (T5) and Red (T8) leads Thermally Protected: Automatic IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 2–13...
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Brown (T7) Line 3 Yel/Bla (T9) Black (T5) Yellow (T4) Red (T8) Black (T5) Gray (T6) Gray (T6) Yel/Bla (T9) Acceptable for Field Wiring Thermally Protected: None Page 2–14 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
WIRING dIAGRAm does Not pReveNt pluGGING oR INstANt ReveRsING of the motoR WhIch Is veRy stRessful to the motoR ANd mAy tRIp ANy oveRcuRReNt oveRloAd pRotectIoN IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 2–15...
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WIRING dIAGRAm does Not pReveNt pluGGING oR INstANt ReveRsING of the motoR WhIch Is veRy stRessful to the motoR ANd mAy tRIp ANy oveRcuRReNt oveRloAd pRotectIoN Page 2–16 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
MTF2, MTR2, MTRP and MTDP motors can be mounted in any horizontal or vertical orientation. MtcP2 M otors MTCP2 motors can be mounted in horizontal or vertical, shaft-down orientations. IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 2–17...
Any air contaminate could inhibit proper operation of the motor fan. If an IronHorse motor is to be installed in a high altitude or in a low temperature location, use the Altitude / Ambient Temperature Derating chart below for proper motor sizing.
When using a typical across-the-line starter, current is highest when power is first applied to the motor. This is commonly referred to as locked rotor amps. Every IronHorse motor has a locked rotor amperage code letter stamped on the motor nameplate either as “CODE” or “kVA Code”. This letter applies to the locked rotor amp range value.
GReAsING motoR beARINGs Is A commoN cAuse of motoR fAIluRe Large horsepower motors with roller bearings will typically be noisier than ball bearing motors at initial motor start-up and in normal operation. Page 2–20 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
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5) For MTDP motors, use Multemp SRL grease or equivalent. 6) MTSS stainless-steel motor bearings should be replaced between 15,000 and 20,000 hours of use (depending upon the severity of use). Page 3–2 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
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All IronHorse cast-iron motors use premium name-brand bearings (NSK, NTN, or SKF). Below is a bearing size chart listing the type of bearings used in each frame size of IronHorse motors. The bearing types are also listed on the motor nameplate.
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Chapter 3: Maintenance BLANK PAGE Page 3–4 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
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Slide Base Dimensions 4–14 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
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250T frame ODP motors 15, 20 MTADP-OEB-280 280T frame ODP motors 25, 30 MTADP-OEB-320 320T frame ODP motors 40, 50 *** TABLE CONTINUED NEXT PAGE *** Page 4–2 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
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Current diverter ring MTADP-CDR-250 250T frame ODP motors 15, 20 MTADP-CDR-280 280T frame ODP motors 25, 30 MTADP-CDR-320 320T frame ODP motors 40, 50 Current Diverter Ring IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 4–3...
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When the motor begins to turn, the start capacitor is no longer needed and is taken out of the circuit by a centrifugal switch. In addition to the start capacitor, 1-1/2 hp and larger IronHorse single-phase motors have run capacitors to allow the motor to develop higher running torque and greater efficiency. Run capacitors also help improve the motor power factor.
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Fan Shroud * These accessories are spare/replacement components only for MTR2 series IronHorse motors. Accessories for MTR2 series motors are NOT compatible with MTR series motors. Page 4–6 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
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Pare ePlaceMent arts for Hree Hase otors IronHorse bases, fans, and fan shrouds are available as direct replacement parts for MTR2, and MTRP motors. These parts are field installable, and include installation instructions. Fan Shroud Junction Box Motor Base MTR2/MTRP/MTRJ Series Three-Phase Motor Spare/...
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Hree Hase otors IronHorse junction boxes, TEFC fans, and TEFC fan shrouds are available as direct replacement parts for MTCP2 motors. These parts are field installable, and include installation instructions. Fan Shroud Junction Box MTCP2 Premium-Efficiency Three-Phase Motor Replacement Parts...
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3) Replacement fan shrouds include shroud, bolts w/washers, rubber plug, and instructions. 4) Replacement junction boxes include gasketed base & cover assembly, base gasket, base bolts, and instructions. IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 4–9...
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MTCP2-010-3BD12 MTCP2-015-3BD18 MTAP2-CFACE-250TC 254T & 256T 3120 MTCP2-015-3BD36 MTCP2-020-3BD18 MTCP2-020-3BD36 1) MTAP2-CFACE C-flange kits will NOT fit MTC EPAct motors. *** TABLE CONTINUED NEXT PAGE *** Page 4–10 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
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MTCP2-125-3BD18 MTAP2-CFACE-444TC 444T & 445T 13744 MTCP2-150-3BD18 MTAP2-CFACE-447TC 445/7T MTCP2-200-3BD18 13483 MTCP2-250-3D18 MTAP2-CFACE-449TC 449T 16250 MTCP2-300-3D18 1) MTAP2-CFACE C-flange kits will NOT fit MTC EPAct motors. IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 4–11...
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56 to 449. These heavy duty steel bases are primed with an oven-baked primer ready for painting. The motor mounting bolts are welded to the exact motor foot pattern to prevent the bolts from spinning. Page 4–12 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
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MTA-BASE-W445T 445T MTCP2-150-3BD18 MTA-BASE-W447T 447T MTCP2-200-3BD18 MTCP2-250-3D18 MTA-BASE-W449T 449T MTCP2-300-3D18 * IronHorse MTR2 and MTRP 56HC motors have double-punched bases to mount on slide base MTA-BASE-W56 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 4–13...
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24-5/8 19-1/4 7-1/4 445T 31-1/4 26-5/8 21-1/4 8-1/4 447T 31-1/4 30-1/8 24-3/4 449T 31-1/4 35-1/8 29-3/4 12-1/2 **** Table Continued Next Page for Dimensions H–W **** Page 4–14 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
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3/4 x 11 447T 13-3/4 7-1/2 8 mm 3/4 x 3-1/2 3/4 x 11 16-1/2 449T 16-1/4 7-1/2 8 mm 3/4 x 3-1/2 3/4 x 11 21-1/2 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 4–15...
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Chapter 4: Accessories Blank PAGE Page 4–16 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
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Speed/Torque Curves for MTCP2 Motors (3600 RPM) 5–68 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
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MTCP and MTRP motors 4:1 (down to 1/4 rated speed); MTC, MTR, & MTSS motors 2:1 (1/2 rated speed); MTCP2, MTDP motors 10:1 (1/10 rated speed): The CT minimum continuous speed for an IronHorse general purpose motor is one quarter or one half of its rated speed, as shown in the motor Performance Data tables (Constant torque loads require the same amount of torque from the motor regardless of speed;...
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* TC-frame motors have the same mounting foot punching as the comparable T-frame motors. ** MTSS-xxx-xxxxR round-body motors do not have mounting feet. *** MTF-002-1C18-182 only IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 5–3...
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• In applications involving over hung load, drive end, bearing life, may be increased by replacing ball bearings with equivalent roller bearings. Consult your EASA authorized motor shop for details. Page 5–4 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
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NeARest AuthoRIzed seRvIce ceNteR oNveRsIoN fRom mouNtING must eAsA be peRfoRmed by AN motoR shop IN oRdeR to mAINtAIN the motoR WARRANty IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 5–5...
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444T 445T 113 117 118 113 3 (2 openings) 445/7T 449T 113 124 * TC-frame motors have the same junction boxes as the comparable T-frame motors. Page 5–6 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
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Sheaves. Go to www.mpta.org and www.rma.org for details. 4) As covered by IP-22; Specifications for Drives Using Narrow V-Belts and Sheaves. Go to www.mpta.org and www.rma.org for details. IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 5–7...
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Decibel levels should remain fairly consistent and can be an indication of misalignment and premature bearing wear. If the measured decibel level for your IronHorse model exceeds the value listed below by more than 10%, contact AutomationDirect or a local motor service technician found at www.easa.com.
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1-1/2 700 850 740 850 850 850 – – – 880 – 880 * TC-frame motors have the same sound ratings as the comparable T-frame motors. IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 5–9...
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* TC-frame motors ship in the same crates as the comparable T-frame motors. Shipping weights are listed in the Motor Specifications tables in “Chapter 1: Getting Started. ” Page 5–10 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
VeRVIeW This chapter provides technical information for Ironhorse AC motors that have been retired by ADC. These legacy models are no longer sold by AutomationDirect, but are detailed in this chapter to keep motor data available during the motors’ lifetime.
2) For warranty on motors 50 hp and above, motors must be inspected by an EASA motor repair or service center. See AutomationDirect Terms & Conditions for details. Page 6–4 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
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(40�3 / 20�1) 46�4 / 23�2 MTCP-020-3BD36 256T (53�4 / 26�7) 1) F1(F2) indicates F1 conduit box mounting location, field convertible to F2 (as shown on dimensional diagram). IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 6–5...
(F2 mounting = conduit entrance on right side facing shaft.) *** Frame sizes 143T(C) and 145T(C) have no lifting eyelet. **** TABLE CONTINUED NEXT PAGE (for dimensions F –U) **** Page 6–10 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
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T-frame “Motor Specifications” table. (F2 mounting = conduit entrance on right side facing shaft.) *** Frame sizes 143T(C) and 145T(C) have no lifting eyelet. IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 6–11...
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(F2 mounting = conduit entrance on right side facing shaft.) *** Frame sizes 143T(C) and 145T(C) have no lifting eyelet. **** TABLE CONTINUED NEXT PAGE (for dimensions F1–U) **** Page 6–12 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
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** AA dimension is conduit fitting size. F1 mounting shown; some frame sizes are F1/F2 convertible; refer to T-frame “Motor Specifications” table. (F2 mounting = conduit entrance on right side facing shaft.) *** Frame sizes 143T(C) and 145T(C) have no lifting eyelet. IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 6–13...
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(F2 mounting = conduit entrance on right side facing shaft.) *** Frame sizes 143T(C) and 145T(C) have no lifting eyelet. **** TABLE CONTINUED NEXT PAGE (for dimensions D–U) **** Page 6–14 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
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** AA dimension is conduit fitting size. F1 mounting shown; some frame sizes are F1/F2 convertible; refer to T-frame “Motor Specifications” table. (F2 mounting = conduit entrance on right side facing shaft.) *** Frame sizes 143T(C) and 145T(C) have no lifting eyelet. IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 6–15...
5�3 364T 365T 405T 444T 445T 11�7 7�1 3 (2 openings) 445/7T 449T * TC-frame motors have the same junction boxes as the comparable T-frame motors. Page 6–16 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
Decibel levels should remain fairly consistent and can be an indication of misalignment and premature bearing wear. If the measured decibel level for your IronHorse model exceeds the value listed below by more than 10%, contact AutomationDirect or a local motor service technician found at www.easa.com.
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Hree Hase otors IronHorse junction boxes, TEFC fans, and TEFC fan shrouds are available as direct replacement parts for MTCP motors. These parts are field installable, and include installation instructions. Fan Shroud Junction Box MTCP Premium-Efficiency Three-Phase Motor Replacement Parts...
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3) Replacement Fan Shrouds include shroud, bolts w/washers, rubber plug, and instructions. 4) Replacement Junction Boxes include gasketed base & cover assembly, base gasket, base bolts, and instructions. IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 6–19...
(NSK, NTN, or SKF). Below is a bearing size chart listing the type of bearings used in each frame size of IronHorse MTCP motors. The bearing types are also listed on the motor nameplate.
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Note: Please review the AutomationDirect Terms & Conditions for warranty and service on this product. NOTE: *56HC are suitable for 56C C-face mounting or 56, 143T, or 145T frame foot mounting dimensions. Page 6–22 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
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0�82 0�122 MTR-1P5-3BD36 1-1/2 2�25 11�2 8�4 72�0 0�85 0�143 MTR-002-3BD36 3�06 18�9 13�4 75�0 0�78 0�188 * Maximum Constant HP rpm is for direct-coupled loads. IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 6–23...
Decibel levels should remain fairly consistent and can be an indication of misalignment and premature bearing wear. If the measured decibel level for your IronHorse model exceeds the value listed below by more than 10%, contact AutomationDirect or a local motor service technician found at www.easa.com.
(NSK, NTN, or SKF). Below is a bearing size chart listing the type of bearings used in each frame size of IronHorse MTR motors. The bearing types are also listed on the motor nameplate.
Round Body Rigid Base IronHorse stainless steel 56C-frame three-phase motors are available from 1/3 hp to 2 hp. All models have TEFC frames and stainless steel end bells, and they are available with or without rigid mounting bases. Mtss s 56c-f –...
Decibel levels should remain fairly consistent and can be an indication of misalignment and premature bearing wear. If the measured decibel level for your IronHorse model exceeds the value listed below by more than 10%, contact AutomationDirect or a local motor service technician found at www.easa.com.
(standard position) through bolt Some IronHorse motors include a shaft slinger (rubber washer) on the output shaft at the end bell. The shaft slinger provides an added layer of protection to the output shaft seal. We recommend leaving the slinger in place, but it can be removed if it poses an interference problem with C-Face-mounted gearboxes.
(NSK, NTN, or SKF). Below is a bearing size chart listing the type of bearings used in each frame size of IronHorse MTSS motors. The bearing types are also listed on the motor nameplate.
EPAct Cast-Iron T-Frame EPAct Cast-Iron TC-Frame IronHorse 1800 rpm T-frame cast-iron industrial duty EPAct motors are available from 1–300 hp, and TC-frame motors are available from 1–100 hp. Optional C-face kits are available for IronHorse T-frame EPAct motors. (EPAct C-face kits are NOT compatible with Premium Efficiency motors.) All models have a TEFC frame and full length mounting feet.
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3) For warranty on motors 50 hp and above, motors must be inspected by an EASA motor repair or service center. See AutomationDirect Terms & Conditions for details. Page 6–34 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
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3) For warranty on motors 50 hp and above, motors must be inspected by an EASA motor repair or service center. See AutomationDirect Terms & Conditions for details. IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 6–35...
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1) TC-frame motors (MTC-xxx-xxxxCK) are T-frame motors with applicable C-face accessory kits installed. 2) Maximum Constant HP RPM is for direct-coupled loads. *** TABLE CONTINUED NEXT PAGE *** Page 6–36 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
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– / 334 – / 2351 1953 2817 1) TC-frame motors (MTC-xxx-xxxxCK) are T-frame motors with applicable C-face accessory kits installed. *** TABLE CONTINUED NEXT PAGE *** IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 6–37...
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MTC-150-3BD18 0�83 MTC-200-3BD18 0�83 MTC-250-3D18 0�54 20 seconds 85° C (185°F) MTC-300-3D18 0�53 1) TC-frame motors (MTC-xxx-xxxxCK) are T-frame motors with applicable C-face accessory kits installed. Page 6–38 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
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MTC-005-3BD12 87�5 0�72 0�258 1�7 MTC-7P5-3BD12 7-1/2 89�5 0�71 0�480 1�7 MTC-010-3BD12 89�5 0�74 2�487 1�7 2) Maximum Constant HP RPM is for direct-coupled loads IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 6–39...
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(176°F) MTC-005-3BD36 87�5 0�88 0�040 2�5 MTC-7P5-3BD36 7-1/2 88�5 0�89 0�258 2�2 MTC-010-3BD36 89�5 0�89 0�109 1�9 2) Maximum Constant HP RPM is for direct-coupled loads Page 6–40 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
F1 mounting shown; some frame sizes are F1/F2 convertible; refer to T-frame “Motor Specifications” table. (F2 mounting = conduit entrance on right side facing shaft.) **** TABLE CONTINUED NEXT PAGE (for dimensions F –U) **** IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 6–41...
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** AA dimension is conduit fitting size. F1 mounting shown; some frame sizes are F1/F2 convertible; refer to T-frame “Motor Specifications” table. (F2 mounting = conduit entrance on right side facing shaft.) Page 6–42 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
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F1 mounting shown; some frame sizes are F1/F2 convertible; refer to T-frame “Motor Specifications” table. (F2 mounting = conduit entrance on right side facing shaft.) **** TABLE CONTINUED NEXT PAGE (for dimensions F –U) **** IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 6–43...
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** AA dimension is conduit fitting size. F1 mounting shown; some frame sizes are F1/F2 convertible; refer to T-frame “Motor Specifications” table. (F2 mounting = conduit entrance on right side facing shaft.) Page 6–44 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
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1) Mounting bolt holes for MTA-CFACE-140TC are located outside of the highest C-face flange surface (dimension AJ > AK). 2) Motor dependent dimensions apply only to IronHorse MTC-xxx-xxxxx(CK) motors. IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 6–45...
365T 405T 9�8 444T 445T 11�7 7�1 11�3 3 (2 openings) 445/7T 449T * TC-frame motors have the same junction boxes as the comparable T-frame motors. Page 6–46 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
Decibel levels should remain fairly consistent and can be an indication of misalignment and premature bearing wear. If the measured decibel level for your IronHorse model exceeds the value listed below by more than 10%, contact AutomationDirect or a local motor service technician found at www.easa.com.
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Authorized EASA service centers are equipped with the necessary equipment to quickly and inexpensively install C-Face kits. Visit the EASA website at www.easa.com to find the nearest authorized service center. Page 6–48 IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
(NSK, NTN, or SKF). Below is a bearing size chart listing the type of bearings used in each frame size of IronHorse MTC motors. The bearing types are also listed on the motor nameplate.
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CCW – ODE CW – ODE (P1) LINE 1 (P1) LINE 1 (T1) (T1) (P2) (P2) (T5) (T8) (T8) LINE 2 (T5) LINE 2 (T4) (T4) IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 6–51...
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When the motor begins to turn, the start capacitor is no longer need and is taken out of the circuit by a centrifugal switch. In addition to the start capacitor, 1-1/2 hp and larger IronHorse single-phase motors have run capacitors to allow the motor to develop higher running torque and greater efficiency. Run capacitors also help improve the motor power factor.
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286T 324T 326T 364T 365T 405T 444T 445T 3 (2 openings) 445/7T 449T * TC-frame motors have the same junction boxes as the comparable T-frame motors. IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022 Page 6–53...
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IronHorse® General Purpose AC Motors User Manual – 11th Ed. – 06/29/2022...
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