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NEMA JM / JP PE

NEMA Standard (JM, JP) Premium Efficiency Close-Coupled Pump Motor

Purpose-built for close-coupled pumps: rigid cast-iron frame, NEMA JM/JP pump shaft, and a locked drive-end bearing that limits axial shaft float.

JM / JP pump shaft1–75 HPCSA Class I Div 2
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NEMA JM / JP close-coupled pump motor

A single-speed, totally enclosed fan-cooled, continuous-duty low-voltage squirrel-cage induction motor to the NEMA standard, designed specifically for close-coupled pump mounting. The whole range uses a cast-iron enclosure and a drive-end bearing locking arrangement that restricts axial movement of the shaft extension.

Efficiency meets the Premium Efficiency level of the NEMA standard, clause 12.60 and Table 12-12. The series is certified in the United States (CC) and Canada (CSA), and carries a CSA hazardous-location rating of Class I, Division 2, Groups A, B, C and D.

Core specifications

ParameterValue
Frame size143JM (JP) – 365JM (JP)
Power range1 – 75 HP
ShaftNEMA JM / JP pump shaft
EfficiencyNEMA Premium Efficiency (MG 00001 Table 12-12)
Service factor1.15 / 1.25
Voltage230/460 V · 460 V · 575 V
Frequency60 Hz
ConstructionTEFC (IP54 / IP55)
Insulation classClass F
Speed range on a drive10:1 constant torque · 20:1 variable torque
Hazardous locationCSA Class I, Div. 2, Groups A, B, C & D — T3C (140–320 frame) / T3A (360 frame)

Standards and certification

  • ANSI/NEMA MG 00001 (MG 1)
  • NEMA Premium Efficiency
  • CSA Class I Div. 2

Typical applications

  • Close-coupled centrifugal pumps in process and utility service
  • Pump packages for the North American market
  • Division 2 locations where a Class I Div 2 rating is acceptable

Selection guide

Both are NEMA close-coupled pump shaft standards; the pump manufacturer specifies which. LEADGO builds both across frames 143 to 365.
A Class I Division 2 rating covers locations where an explosive atmosphere is not normally present. If the atmosphere is present in normal operation, you need a flameproof Ex db machine instead — see YBX3 and YBX4.
The series is rated 10:1 on constant-torque duty and 20:1 on variable-torque duty. Beyond that, cooling at low speed becomes the limit and a separately-cooled machine such as YVP should be considered.

FAQ

Datasheets, dimension drawings and certification copies are issued on request — tell us the rating and we will send the documents for that specific model.

Downloads

DatasheetPDF · 1.2 MBDownload
Installation & maintenance manualInstallation, commissioning and servicingRequest
CertificationCertificates and test reportsRequest

Certificates and test reports are issued against the specific model and rating rather than the series, so we send the ones that apply to your order. Tell us the rating and the market and we will send them.

Related products

NEMA PE

Premium Efficiency, NEMA MG 1

NEMA D

Oil well pump duty

YBX3

Flameproof induction motor

Request a quote — NEMA JM / JP PE

Tell us the rating, quantity and application and an engineer will come back with a specification, the documents for that model, and a price.

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