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Technical Data Sheet
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MR1028 — MR1028

✓ Government record, cited
MIL SPEC INC DBA MIL SPEC, INC · MOTOR
PRODUCT OVERVIEW

MR1028: MR1028.

The MR1028 is a MIL SPEC INC DBA MIL SPEC, INC industrial component. This part is cataloged in the U.S. Government catalog under NSN 6105-01-455-0407, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MR1028
NSN: 6105-01-455-0407
FSC: 6105 — Motors, Electrical
CAGE: 57368 — MIL SPEC INC DBA MIL SPEC, INC (USA)
SPECIFICATIONS
Part NumberMR1028
ManufacturerMIL SPEC INC DBA MIL SPEC, INC
NSN6105-01-455-0407
COMPONENT DIAGRAM
ELECTRIC MOTOR — FRAME SIZE = MOUNTING PATTERN SHAFT J-BOX MOUNTING FEET — FRAME — — · — RPM — · — PN: MR1028 · MIL SPEC INC DBA MIL SPEC, INC ⚠ VERIFY BEFORE ORDERING NEMA frame size determines mounting bolt pattern — not interchangeable. 56C ≠ 143T bolt pattern. C-face vs foot-mount vs flange — different mounting, same HP doesn't mean drop-in ✓ BROKER TIP TEFC = outdoor/washdown OK. ODP = dry indoor only. TENV = no external fan, explosion-proof areas. 1750 RPM = 4-pole (most common), 3450 RPM = 2-pole, 1150 RPM = 6-pole PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
DUTY CYCLE: CONTINUOUS
•
PHASE: THREE INPUT
•
FREQUENCY IN HERTZ: 60.0 INPUT
•
FRAME SIZE DESIGNATION: 48
•
CONNECTION TYPE AND VOLTAGE RATING IN VOLTS: 440.0 LINE TO LINE SINGLE INPUT
•
ENCLOSURE FEATURE: SPRAY TIGHT
TECHNICAL CHARACTERISTICS
DUTY CYCLECONTINUOUS
PHASETHREE INPUT
FREQUENCY IN HERTZ60.0 INPUT
OVERALL LENGTH11.070 INCHES IN
FRAME SIZE DESIGNATION48
CONNECTION TYPE AND VOLTAGE RATING IN VOLTS440.0 LINE TO LINE SINGLE INPUT
OVERALL HEIGHT5.250 INCHES IN
ENCLOSURE FEATURESPRAY TIGHT
POWER RATING0.333 HORSEPOWER INPUT
SUBSTITUTES & CROSS-REFERENCES 1
93D1004Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MR1028?
MR1028 is a MR1028 manufactured by MIL SPEC INC DBA MIL SPEC, INC.
What parts can replace MR1028?
There is 1 known substitute for MR1028: 93D1004. Substitute compatibility should be verified for your specific system.
What is the NSN for MR1028?
MR1028 is cataloged in the U.S. Government catalog under NSN 6105-01-455-0407. This indicates validated use in U.S. government and defense supply chains.
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