ARO pneumatic lubrication pumps handle motor and gear oils, transmission fluid, and standard and industrial greases. Oil pumps are offered from 3:1 to 100:1 ratios in order to meet the requirements of any application - commercial vehicle servicing to lubricating heavy mining equipment.

- 5:1 Ratio
- Max Flow: 6 GPM (22.7 l/min)
- Fluid Pressure: 0-450 psi (0-31 bar)
About the ARO oil piston pump range:
- LM Series pneumatic piston pumps deliver unmatched industrial-strength performance for pumping fluids with sizes to fit small (60L oil / 16kg grease) or large (1000L oil / 180kg grease) containers.
- Piston pump’s patented design improves flow, reduces pulsation, and extends service life.
- Offers simple self-service maintenance due to advanced design with 50% fewer parts.
- Reduces service time, due to in-line service design with no special tools required.
- Features stall-free, ice-free air motor with tough, durable housing.
Lower Pump Material | Carbon Steel |
Air Motor Diameter | 2” |
Air Inlet Pressure Range psi (bar) | 0-150 (0-10.3) |
Fluid Pressure Range psi (bar) | 0-450 (0-31) |
Stroke Length | 3” |
Max.Recommended Cycles/Minute | 125 |
Flow Rate gpm (lpm) | 6 (22.7) |
Cycles Per Gallon (Liter) | 37 (9.8) |
Air Inlet Size | 1/4” (F) |
Fluid Outlet Size | 1/2” (F) |
Fluid Inlet Size (stub) | 3/4” (F) |
Noise Level @ 100 psi – 124 cpm | 80 db(A) |
Available Models
Pump Model | Container Size gal (L) | |
|---|---|---|
LM2203A-11-C | (-12-C = BSP Thread) | Stub |
LM2203A-31-C | (-32-C = BSP Thread) | 16 (60.6) |
LM2203A-41-C | (-42-C = BSP Thread) | 55 (208.2) |
LM2203A-51-C | (-52-C = BSP Thread) | 275 (1040.9) |
Packages
Model | Size | Pump Model | Meter | Control Handle | Dolly | Drum Cover | hose | Follower Plate |
|---|---|---|---|---|---|---|---|---|
LP3001-1 | 35-lb (15.8 kg) | LM2350E-21-B | N/A | 636103 | N/A | 94420 | 624201-10 | 640095-2-B |
LP3002-1 | 120-lb (54.4 kg) | LM2350E-31-B | 622201-3 | N/A | N/A | 94421 | 624401-4 | 640165 |
Model | Description |
|---|---|
61113 | Wall Mount Bracket |
66073-1 | Air Line Connection |
67145-3-B (3:1 Ratio) | 2” Bung Adapters |
67145-4-B (5:1 Ratio) | 2” Bung Adapters |
637224 | LM2203A Service Kit |
637226 | LM2305A Service Kit |





