ELGi · S-Series · 3-STAGE ROTARY SCREW

S017744-460/3-125

50 HP · 100% duty · gas · oil-lubricated · 3-stage
AVERAGE PRICE
$28,088
2 retailers · in stock

ELGi S017744-460/3-125 (marketed as ELGi EQ37) is a 50 HP oil-lubricated rotary screw compressor delivering 237.0 SCFM at 100 PSI on a base-mount configuration at 460V three-phase. No integral tank; base-mount connects to a separately specified receiver. Max pressure is 100 PSI. Unit weighs 2,469 lbs. The EQ Series is ELGi’s oil-lubricated (oil-injected) direct-drive screw line, built for rugged continuous-duty industrial air. ELGi markets this as the EQ37 (50HP) in the EQ Series, backed by an industry-leading warranty program. Retail pricing from authorized ELGi distributors is approximately $23,875. Note: the typed data shows power_type as gas which appears to be a data error; this is an electric compressor. Confirm exact voltage, airflow at rated PSI, and system integration requirements with an authorized ELGi distributor before purchase.

HP
50
CFM
237 @ 100 PSI
Duty
100% continuous
Tank size
— gal
Air output per horsepowerAirflow per motor HP
4.74CFM/HP
Poor 2.8Typical 3.15Good 3.5
Isentropic efficiencyClass median · 3-stage rotary screw
75%
Poor <50Good 70Best 92
Price per cubic foot · minuteVerified retailer price
$119$/SCFM
Good $180Typical $211High $260
PUMP & DRIVE
Stages3-stage screw
Cylinder—
Pump RPM—
LubricationOil-Lubricated
Oil—
Sump—
Pump life—
Pump material—
Head material—
Intercooler—
PERFORMANCE
Catalog CFM237 @ 100 PSI
CFM / HP4.74
Cut-in / out—
Tank fill—
Est. draw43.9 kW
COST & MAINTENANCE
Electric · yearlyEst. $15,756
Maintenance · yearlyEst. $1,250
ELECTRICAL & FORM
Servicegas
Voltage230
Amps—
Motor—
Motor RPM—
Control—
Starter—
Weight2469 lb
Form—
BUILD & ENVIRONMENT
Air outlet—
Drain—
Drain outlet—
ASME tank—
Made in USA—
Noise—
Op. temp—
Dimensions—
Ship weight—
Warranty—

Where this sits in the catalog

Histograms below: highlighted bar marks this unit’s bucket.

Catalog
1708 units
Peer class
15 · 50 HP
Sizing & pricevs. 15 in class
  • SCFM @ 50 HP237cfm
    170median 203.4248
    +16.5% vs. median
  • Average price$28,088
    $23,875median $31,890$50k
    -11.9% vs. median
Efficiency vs. peersvs. 15 in class
  • CFM per HP4.74cfm/hp
    3.4median 4.074.96
    +16.5% vs. median
  • Price per CFM$101$/scfm
    $100median $153$246
    -34.3% vs. median

Price history

Showing the current verified price for each retailer. As the price-tracking worker collects new readings, dots will appear along each line.

$26,684$27,620$28,556$29,492avg $28,088today-10d-20d-30d
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