Ingersoll Rand R-Series (RS 7.5–160)
IR's core industrial rotary screw line, 10–200 hp. Contact-cooled, direct-drive, air- or water-cooled. Xe-series controller standard.
Type
Oil-flooded rotary screw
Power
10–200 hp (7.5–160 kW)
Flow
30–860 cfm
Pressure
100–217 psig (7–15 bar)
Cooling
air-or-water
Drive
direct
Lubrication
oil-flooded
Models
RS 7.5n–160n (Next-Generation contact-cooled)
Years produced
R-Series ~2011 – present; Next-Gen 'n' refresh ~2018.
Sound level
~66–75 dB(A) @ 1 m enclosed.
Dimensions
RS 7.5–15: ~44"×30"×48"; RS 30–50: ~63"×42"×63"; RS 90–160: ~99"×62"×82".
Weight
RS 7.5 ~900 lb up to RS 160 ~5,300 lb.
Ambient range
35–115 °F (2–46 °C).
Motor efficiency
NEMA Premium TEFC (IP55) standard.
Starter
Wye-Delta standard; Nirvana / VSD variants use permanent-magnet VFD.
Integrated dryer
TAS variants ship with integrated refrigerated dryer + coalescing filter.
Warranty
PackageCare / 5-year airend options via IR service.
Replaces
SSR-EP / SSR-UP legacy platforms.
Control modes
- Online/Offline (load/unload)
- Modulation
- Modulation with Auto Dual
Typical applications
- General plant air
- Automotive
- Petrochemical (with derating)
- Marine ratings available
Specs & intervals below are from publicly published OEM literature and long-standing field practice. Torque values, exact revision-dated part numbers, and safety-critical settings vary by serial number — always cross-check the unit’s OEM manual and nameplate before ordering parts or performing service.
Fluid
Spec: IR Ultra Coolant (polyglycol) — 8,000 hr; Ultra EL Coolant — 16,000 hr
Change interval: 8,000–16,000 hr depending on fluid
Approved alternatives
- Ultra EL for extended life
- Food-grade H1 available for specific packages
Torque guidance
Separator canister torque per OEM manual; over-torque crushes O-ring. Motor lugs: 45–275 in-lb per AWG.
Always verify torque values against the OEM service manual for the specific serial number.
Wear parts
| Category | Interval | Source |
|---|---|---|
| Air filter element | 2,000 hr or ΔP | |
| Coolant filter | 2,000 hr | |
| Separator element | 4,000 hr (Xe alarm 27) | |
| Ultra Coolant | 8,000 hr (Ultra EL 16,000 hr) | |
| MPCV rebuild kit | 8,000 hr | |
| Blowdown valve solenoid | As needed on stuck alarm | |
| Inlet valve rebuild kit | 16,000 hr / as needed | |
| Motor bearings | Per motor plate (regrease 4,000 hr) |
Consumable part numbers change by revision and region — pull the current number from the OEM portal.
Parts cross-reference
OEM part numbers with commonly-cited aftermarket equivalents. Verify against the nameplate and OEM parts portal before ordering — dimensionally similar filters can still be wrong for the application.
Air filter
Intake filter element
OEM
23429822, 39708466
Aftermarket
- P827653— Donaldson
- PA2777— Baldwin
- SA 16145— Hifi
- C 25 860/3— Mann-Filter
VerifiedConfirmed against a public OEM or aftermarket catalog / cross-reference tool at time of entry.LikelyCommonly cited in the vendor's cross tool or long-standing field usage; not independently re-verified against the current OEM parts list.UnverifiedDimensional lookalike or user-reported.
Oil / fluid filter
Coolant filter (spin-on)
OEM
39911615, 22252603
Aftermarket
- P171754— Donaldson
- B7600— Baldwin
- LF3379— Fleetguard
- SO 6115— Hifi
VerifiedConfirmed against a public OEM or aftermarket catalog / cross-reference tool at time of entry.LikelyCommonly cited in the vendor's cross tool or long-standing field usage; not independently re-verified against the current OEM parts list.UnverifiedDimensional lookalike or user-reported.
Air-oil separator
Air-oil separator
OEM
54672654, 22203095
Aftermarket
- P532966— Donaldson
- OS 5169— Hifi
- OAS30056— Baldwin
VerifiedConfirmed against a public OEM or aftermarket catalog / cross-reference tool at time of entry.LikelyCommonly cited in the vendor's cross tool or long-standing field usage; not independently re-verified against the current OEM parts list.UnverifiedDimensional lookalike or user-reported.
Verify by frame size — RS 30–45 uses a different element than RS 50–75.
Lubricant
Ultra Coolant (PAG)
OEM
38459582 (5 gal), 38459590 (55 gal)
Aftermarket
- PG-8000-46— Summit
- Ultra EL (extended life)— Ingersoll Rand
VerifiedConfirmed against a public OEM or aftermarket catalog / cross-reference tool at time of entry.LikelyCommonly cited in the vendor's cross tool or long-standing field usage; not independently re-verified against the current OEM parts list.UnverifiedDimensional lookalike or user-reported.
- PG-8000-46— SummitUnverifiedPAG equivalent; NOT compatible with PAO.
- Ultra EL (extended life)— Ingersoll RandUnverifiedOEM extended-life option — 12,000 hr claim.
Ultra Coolant is PAG-based. Never mix with PAO or hydrocarbon fluids.
Need to look up a number across all models? Use the parts cross-reference search.
Preventive maintenance
Daily
- Check fluid level in sight glass at running temp
- Listen for unusual noise / vibration
- Check discharge pressure & temperature vs baseline
- Verify condensate drain function
- Log package amps if metered
Weekly
- Blow down receiver and drain traps
- Check for oil carryover at first drop leg
- Inspect for fluid or air leaks around airend and separator tank
- Verify safety valve is not weeping
Every 2,000 hr / 6 mo
- Change fluid filter
- Change air filter (or sooner per ΔP)
- Sample fluid for TAN / metals / water
- Clean cooler exterior with low-pressure air (never > 30 psi against fins)
Every 4,000 hr / 12 mo
- Change separator element
- Change fluid
- Inspect scavenge line & orifice for coking
- Check coupling / belt alignment & wear
- Torque electrical lugs to spec (typ. 45–75 in-lb #4–2/0 AWG)
Every 8,000 hr
- Rebuild inlet valve
- Rebuild minimum-pressure check valve
- Regrease or replace motor bearings per OEM interval
- Verify safety valve setpoint against gauge
Common faults & first checks
- Code 1 high discharge temp — check thermal valve + cooler + coolant level
- Code 27 sump won't blow down — stuck MPCV or blowdown solenoid
- Code 18 change coolant filter after prolonged cold starts
- Xe SD/USB update failures — use FAT32 stick, single-partition
Known issues & field notes
- Ultra Coolant hygroscopic — sealed drum & 12-month shelf life
- PORO enabled from factory on some builds — verify before commissioning
- TAS integrated dryer condenser fouls quickly in dusty plants
Controller(s)
- Xe-70M / Xe-90M / Xe-145M / Xe-300M — Xe-70M: 3.5" color; Xe-90M: 4.3" color; Xe-145M: 7" color touch; Xe-300M: 7" color touch with sequencing screens.
Strengths
- Wide dealer network
- Xe controller has strong on-board trending
- TAS integrated dryer option
- Field-serviceable airend components
Weaknesses
- Ultra Coolant not interchangeable with mineral or other polyglycol coolants
- Nirvana PM motor rebuild is factory-scope
Field notes
R-Series n (Next-Gen) rewrites airend and cooling flow vs original R. Xe-70M ships on smaller frames; Xe-145M/300M on larger and sequenced installs.