FS-Curtis · FNB · SINGLE-STAGE ROTARY SCREW

FNB37DXX3HXXX-B

50 HP · Horizontal · 100% duty · electric · oil-flooded · 1-stage
AVERAGE PRICE
$29,099
1 retailer
FS-Curtis FNB37DXX3HXXX-B

The FS-Curtis FNB37DXX3HXXX-B is a 50 HP fixed-speed oil-flooded rotary screw air compressor (NxB37 Series) base-mounted, delivering 200 SCFM at 125 PSI maximum on 230V single-phase, 100% continuous duty. The NxB Series is FS-Curtis’s heavy industrial fixed-speed screw line with NxGen warranty program available. No tank (base-mounted only). Suited for plant air in manufacturing, metalworking, and high-utilization shop environments that cannot tolerate reciprocating duty-cycle limitations. Priced at $29,099 (Compressed Air Advisors, verified 2026-05-21); dealer/distributor quote required for final pricing. No OEM product page located at fscurtis.com at cataloging time; specifications sourced from authorized distributor. The unit is rated for 100% duty cycle operation. Motor: 50 HP, 230V 1-phase.

HP
50
CFM
200 @ 125 PSI
Duty
100% continuous
Tank size
gal
Air output per horsepowerAirflow per motor HP
4CFM/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
$145$/SCFM
Good $180Typical $211High $260
PUMP & DRIVE
Stages1-stage screw
Cylinder
Pump RPM
Lubricationoil-flooded
Oil
Sump
Pump life
Pump material
Head material
Intercooler
PERFORMANCE
Catalog CFM200 @ 125 PSI
CFM / HP4
Cut-in / out
Tank fill
Est. draw43.9 kW
COST & MAINTENANCE
Electric · yearlyEst. $15,756
Maintenance · yearlyEst. $1,250
ELECTRICAL & FORM
Serviceelectric
Voltage230/1
Amps
Motor
Motor RPM
Control
Starter
Weight1895 lb
FormHorizontal
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
1655 units
Peer class
15 · 50 HP
Sizing & pricevs. 15 in class
  • SCFM @ 50 HP200cfm
    170median 203.4248
    -1.7% vs. median
  • Average price$29,099
    $23,875median $34,998$50k
    -16.9% vs. median
Efficiency vs. peersvs. 15 in class
  • CFM per HP4cfm/hp
    3.4median 4.074.96
    -1.7% vs. median
  • Price per CFM$145$/scfm
    $100median $168$246
    -13.7% 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.

$27,644$28,614$29,584$30,554avg $29,099today-10d-20d-30d
Compressed Air Advisors