Research any topic before you write.

Find related topics. | Discover entities. | See connections. | Build a topical map.

EMD SD45

The SD45 is a six-axle diesel-electric locomotive class built by General Motors Electro-Motive Division between 1965 and 1971. It has an EMD 645E3 twenty-cylinder engine generating 3,600 hp (2,680 kW) on the same frame as the SD38, SD39, SD40, and SDP40. As of 2023, most SD45s have been retired, scrapped, or rebuilt to SD40-2 standards.

Standards & Measurement

Use the mouse wheel or two fingers (on touchscreens) to zoom in and out of the map.

Research this topic

Explore the main themes, entities and connections around EMD SD45. Start with the topic map, then use the sections below for research and deeper semantic analysis.

Explore this topic

Start with a few of the strongest sections from the source topic. These are research directions, not a list of keywords you must use.

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

Build date
Dec. 1965 – Dec. 1971
Builder
General Motors Electro-Motive Division (EMD)
Configuration:
​
Cylinders
20
Engine type
V20 diesel
Generator
AR10B

Topics to explore

Browse the full topic structure. Each item opens a new analysis centered on that subject.

Overview

Design

Accidents and incidents

Rebuilds

Preservation

Sources

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

Map overview Semantic statistics

EMD SD45

Nodes64
Edges63
Triples55
Avg. degree1.97
Density0.03125
Components1

How this topic connects Entity context

See the strongest relationship patterns around the current topic before diving into the raw triples.

EMD SD45

Top relations

related to SD45R · 17
EMD SD45 → Company, EF636-1, EF636-2, EF636-3, EF636-4, EF636-5, EF636-6, EF636LR-1, EF636LR-3, EF636R-2, EMD SD45R, Most, Sacramento Shops, SD45, Southern Pacific, Southern Pacific's M-99, The Southern Pacific Transportation
related to SD40M-2 · 12
EMD SD45 → Canadian Pacific Railway, EMD SD40, EMD SDP45, In, Knudsen, Morrison, SD40M-2s, SD40s, SD45s, Southern Pacific, Southern Pacific Transportation Company, The
related to SD45u · 5
EMD SD45 → EMD SD45u, Santa Fe Railway, The Atchison, They, Topeka
Build date · 1
EMD SD45 → Dec. 1965 – Dec. 1971
Builder · 1
EMD SD45 → General Motors Electro-Motive Division (EMD)
Configuration: · 1
EMD SD45 → ​
Cylinders · 1
EMD SD45 → 20
Engine type · 1
EMD SD45 → V20 diesel
Gauge · 1
EMD SD45 → .mw-parser-output .frac{white-space:nowrap}.mw-parser-output .frac .num,.mw-parser-output .frac .den{font-size:80%;line-height:0;vertical-align:super}.mw-parser-output .frac .de…
Generator · 1
EMD SD45 → AR10B

Important terminology Word statistics

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

emd sd45 pacific southern diesel railway sd45x engine museum rebuilt locomotives sd45s railroad units sd40 transportation 20-645e3 kw display locomotive

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
EMD SD45Build dateDec. 1965 – Dec. 19711.00infobox
EMD SD45BuilderGeneral Motors Electro-Motive Division (EMD)1.00infobox
EMD SD45Configuration:​1.00infobox
EMD SD45Cylinders201.00infobox
EMD SD45Engine typeV20 diesel1.00infobox
EMD SD45Gauge.mw-parser-output .frac{white-space:nowrap}.mw-parser-output .frac .num,.mw-parser-output .frac .den{font-size:80%;line-height:0;vertical-align:super}.mw-parser-output .frac .de…1.00infobox
EMD SD45GeneratorAR10B1.00infobox
EMD SD45Length65 feet 8 inches (20.02 m); 65 feet 9+1⁄2 inches (20.053 m) on some units starting early 1968.1.00infobox
EMD SD45Loco weight368,000 pounds (167,000 kg)1.00infobox
EMD SD45Maximum speed71 miles per hour (114 km/h)1.00infobox
EMD SD45ModelSD45, SD45X1.00infobox
EMD SD45Performance figuresPerformance figuresMaximum speed71 miles per hour (114 km/h)Power output3,600 hp (2,680 kW)Tractive effortStarting: 92,000 lbf (410 kN) Continuous: 82,100 lbf (365 kN) @ 11 mph…1.00infobox
EMD SD45Power output3,600 hp (2,680 kW)1.00infobox
EMD SD45Power typeDiesel1.00infobox
EMD SD45Prime moverEMD 20-645E31.00infobox
EMD SD45SpecificationsSpecificationsConfiguration: ​ • AARC-CGauge.mw-parser-output .frac{white-space:nowrap}.mw-parser-output .frac .num,.mw-parser-output .frac .den{font-size:80%;line-height:0;vert…1.00infobox
EMD SD45Total produced1,260 SD45; 7 SD45X1.00infobox
EMD SD45Tractive effortStarting: 92,000 lbf (410 kN) Continuous: 82,100 lbf (365 kN) @ 11 mph (18 km/h)1.00infobox
EMD SD45Type and originType and originPower typeDieselBuilderGeneral Motors Electro-Motive Division (EMD)ModelSD45, SD45XBuild dateDec. 1965 – Dec. 1971Total produced1,260 SD45; 7 SD45X1.00infobox
EMD SD45• AARC-C1.00infobox

Related concept clusters Concept neighborhoods

These clusters group vocabulary that occurs around closely connected concepts in the source material.

    Connections between topic areas Semantic bridges

    Bridges can reveal useful research angles that are easy to miss in a flat list of related terms.

    Min side: 3
    For writers, content strategists, SEOs, marketers and creators — from quick topic research to advanced semantic analysis.