- Three Phase
- TEFC
- Rigid Base
General Specifications:
Designed for continuous duty service on close-coupled pumps using NEMA JM mounting provisions. All motors have a rigid mounting base and NEMA JM pump shaft.
| Items |
 121855 Leeson Three Phase TEFC Rigid Base JM Pump Motors |
121858 Leeson Three Phase TEFC Rigid Base JM Pump Motors |
121856 Leeson Three Phase TEFC Rigid Base JM Pump Motors |
121859 Leeson Three Phase TEFC Rigid Base JM Pump Motors |
121857 Leeson Three Phase TEFC Rigid Base JM Pump Motors |
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| Base | Rigid Base | |||||||||
| Enclosure Type | Totally Enclosed Fan Cooled | |||||||||
| Phase | Three | |||||||||
| HP | 1 | 1 1/2 | 1 1/2 | 2 | 2 | |||||
| RPM 60 Hz | 1740 | 3450 | 1740 | 3450 | 1740 | |||||
| Voltage | 208 V230 V460 V | |||||||||
| FL Amps 230 V | 3.6 | 4.6 | 4.8 | 6.0 | 5.8 | |||||
| % FL Eff. | 77.0 | 80.0 | 80.0 | 80.0 | 82.5 | |||||
| NEMA Frame | 143JM | 143JM | 145JM | 145JM | 145JM | |||||
| Disc. Sym. | B | |||||||||
| C Dimension | 14.50 in | 14.50 in | 14.50 in | 14.50 in | 16.00 in | |||||
| Approx. Weight | 30 lbs | 31 lbs | 35 lbs | 33 lbs | 43 lbs | |||||
| NEMA Service Factor | 1.15 | |||||||||
| Frame Construction | ||||||||||
| Rating | Inverter Rated | |||||||||
| Drip Cover Kit Ref. | B | |||||||||
| Manufacturer |
 Leeson |
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| Mechanical Features | Totally enclosed fan cooled construction for maximum life in dirty or severe environments. Oversized locked bearing on shaft end limits axial shaft movement. Drip covers are available as accessory kits for 143-5JM and 182-4JM motors-see letter designations in the table for the correct kit. Some 182-4JM frame motors have enclosed endshields as standard with frame vents meeting the 12ยบ drip-proof requirement. No drip cover is needed, or shown in the table, for these motors. | |||||||||
| Electrical Features | High efficiency copper windings with NEMA 1.15 service factors. UL and CSA recognized designs. | |||||||||
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