Ingersoll Rand · R · SINGLE-STAGE ROTARY SCREW
🇺🇸Commercial / Industrial

R5.5i-125

7.50 HP · 100% duty · oil-flooded screw · 1-stage
AVERAGE PRICE
$14,195
2 retailers · in stock
Ingersoll Rand R5.5i-125

Ingersoll Rand R5.5i-125 is a 7.5 HP single-stage rotary screw compressor putting 27.5 SCFM at 125 PSI on an 80-gallon horizontal tank, rated for 100 percent duty cycle. The R-Series introduced Ingersoll Rand’s next-generation airend with a reduced parts count, leak-free PTFE refrigerant hoses with O-ring face seals, and a more compact footprint than the prior UP-Series. This is a workhorse package targeted at the bays that previously needed a 5 HP or 7.5 HP two-stage piston but kept thermal-tripping under continuous spray, sand, or assembly air loads. Available three-phase (208/230/460V) and single-phase 230V; on 1-phase the unit drops to 30.47 SCFM (R5.5i base-mount). Tank-mount, base-mount, and tank-mount-with-dryer (TAS-145) configurations are all offered. Ingersoll Rand backs the airend with the Package Care extended warranty when scheduled fluid changes are followed and Ultra Coolant is used. Best for production shops, body shops, and CNC rooms.

HP
7.50
CFM
27.5 @ 125 PSI
Duty
100% continuous
Tank size
80 gal
Air output per horsepowerAirflow per motor HP
3.67CFM/HP
Poor 2.8Typical 3.15Good 3.5
Isentropic efficiencyClass median · 1-stage rotary screw
75%
Poor <50Good 70Best 92
Price per cubic foot · minuteVerified retailer price
$418$/SCFM
Good $180Typical $211High $260
PUMP & DRIVE
Stages1-stage screw
Cylinder—
Pump RPM—
Lubricationoil-flooded screw
OilISO 46 synthetic rotary screw fluid
Sump—
Pump life100,000 hrs
Pump material—
Head material—
Intercooler—
PERFORMANCE
Catalog CFM27.5 @ 125 PSI
CFM / HP3.67
Cut-in / out—
Tank fill—
Est. draw6.6 kW
COST & MAINTENANCE
Electric · yearlyEst. $2,363
Maintenance · yearlyEst. $188
ELECTRICAL & FORM
Service—
Voltage208/230/460
Amps—
Motor—
Motor RPM1750 rpm
Control—
Starter—
Weight617 lb
Form— · 80 gal · 175 PSI tank rating
BUILD & ENVIRONMENT
Air outlet1/2 in NPT
DrainManual ball valve standard
Drain outlet—
ASME tankYes
Made in USAYes
Noise—
Op. temp40–104 °F
Dimensions38 x 27 x 47 in
Ship weight—
Warranty—

Where this sits in the catalog

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

Catalog
1708 units
Peer class
32 · 7.5 HP
Sizing & pricevs. 32 in class
  • SCFM @ 7.5 HP27.5cfm
    20median 2952
    -5.2% vs. median
  • Average price$14,195
    $6,689median $9,636$26k
    +47.3% vs. median
Efficiency vs. peersvs. 32 in class
  • CFM per HP3.67cfm/hp
    2.72median 3.876.93
    -5.2% vs. median
  • Price per CFM$418$/scfm
    $177median $346$524
    +20.6% 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.

$11,219$12,573$13,926$15,280avg $13,297today-10d-20d-30d
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