5:1 Air Operated Double Acting Universal Oil Pump

What This Pump Does for You This pump takes your shop air and makes it 5 times stronger to move oil fast. Put in 8 bar of air pressure, get 40 bar of oil pressure out. That means thick oil flows like water, and you finish jobs faster. Simple math: Most shops save 3-5 minutes per oil change. If you do 15 oil changes a day, that’s 75 minutes saved. At $80/hour shop rate, you make an extra $100 daily just from being faster. The double acting design means oil flows on both up and down strokes. No waiting, no pulsing – just steady oil flow that looks professional to your customers. Key Technical Data (Based on Real Testing) Core Performance Numbers What It Does Numbers What This Means Pressure Boost 5:1 ratio 6 bar air → 30 bar oil pressure Flow Speed 12-38 L/min Fill a 5L container in 8-25 seconds Max Pressure 40-51.7 bar (580-750 psi) Pushes oil through long hoses easily Air Needed 5-8 bar (70-115 psi) Standard shop compressor works Thick Oil Limit SAE 240 (1500 cSt) Handles gear oil, thick hydraulic fluid Noise Level 72.9-77 dB Quieter than a vacuum cleaner Real-World Performance Data Tested Flow Rates by Brand: STM Australia: 28 L/min max flow Graco LD 5:1: 29.5 L/min (7.8 GPM) free flow Koeo OP5: 14 L/min max flow Alentec & Orion: 38 L/min max flow Piusi: 15.5 L/min max flow Air Consumption (Real Numbers): Koeo OP5: 125 L/min at 8 bar Piusi: 200-250 L/min at 8 bar STM: 110 L/min typical Physical Specs That Matter Size and Weight Weight: 5-7.7 kg (depends on mounting type) Suction Tube: 730-940mm for drums, 175mm stub for wall mount Air Inlet: 1/4″ BSP or NPT female (standard air hose fits) Oil Outlet: 1/2″ or 3/4″ BSP/NPT male (fits dispensing guns) What It’s Made From Pump Body: Aluminum, carbon steel, or stainless steel Seals: Nitrile (NBR), polyurethane (PU), or Viton Wetted Parts: Chemical resistant materials for oil contact How Different Models Compare Graco LD 5:1 (Heavy Duty Choice) Max Pressure: 51.7 bar (750 psi) – highest pressure Pump Speed: 180 cycles/minute – very fast Air Inlet: 1/4″ / Oil Outlet: 1/2″ Best For: High-pressure applications, long hose runs Koeo OP5 (Balanced Performance) Max Pressure: 40 bar (580 psi) – good for most jobs Flow Rate: 14 L/min – steady performance Weight: 5-6 kg – lightest option Best For: General shop use, mobile applications Alentec & Orion (High Flow) Max Flow: 38 L/min – fastest filling Air Pressure: 3-5 bar recommended (works with smaller compressors) Connections: 1″ inlet, 3/4″ outlet (bigger connections) Best For: High-volume operations, bulk transfer Piusi (Precision Control) Viscosity Range: Up to 800 cSt – handles medium-thick oils well Air Range: 3-8 bar – flexible pressure requirements Flow: 15.5 L/min – controlled, precise dispensing Best For: Precision work, multiple oil types What Oils It Handles Works Great With: Motor oil (all weights: 0W-20 to 20W-50) Synthetic oil (full and partial synthetic) Gear oil (up to SAE 240 weight) Hydraulic fluid (most industrial types) ATF (automatic transmission fluid) Differential oil Oil Thickness Limits: Light oils (5W-30): All models work perfectly Medium oils (15W-40): No problems, full flow rate Heavy oils (SAE 90 gear oil): Flow rate drops 20-30% but still works Very thick (SAE 240): Slowest flow but still pumps effectively Real Applications Auto Shops Oil changes: Cut time from 8 minutes to 3 minutes Transmission service: Push thick ATF through small lines Differential service: Handle 90-weight gear oil easily Fleet service: One pump handles all oil types Industrial Use Machine lubrication: Pump oil to hard-to-reach grease points Hydraulic systems: Transfer clean hydraulic fluid Equipment maintenance: Mobile oil service for large machines Production lines: Keep machines running with quick oil top-ups Mobile Service Service trucks: Pump from drums without electric power Construction sites: Oil equipment where power isn’t available Farm equipment: Service tractors and combines in the field Marine applications: Boat engine oil changes at the dock Installation Made Simple Drum Mount Setup Choose your drum: Works with 50-220 kg drums Install suction tube: 730-940mm standard lengths Connect air line: 1/4″ quick-connect to your shop air Test flow: Start with 6 bar, increase if needed Wall Mount Setup Mount bracket: Use included hardware on wall Install short suction: 175mm stub for nearby containers Connect hoses: Air supply and oil output lines Adjust pressure: Set regulator for your needs Mobile Cart Option Assemble cart: Wheels and handle included Mount pump: Secure to cart platform Add containers: Oil storage and waste oil collection Go mobile: Roll between service bays Maintenance Reality Check Daily (30 seconds) Look for oil leaks around connections Check air pressure gauge reading Weekly (2 minutes) Wipe down pump exterior Check all hose connections are tight Monthly (5 minutes) Inspect suction tube for wear Test emergency stop if equipped Check mounting bolts Yearly (30 minutes) Replace main seals (NBR or PU) Inspect internal components Replace suction tube if cracked Parts Cost Reality: Annual seal kit costs $25-40. Compare that to $200 for electric pump motor replacement. FAQ – Honest Answers Q: What compressor do I really need? A: 5 HP minimum with 80-gallon tank. Smaller compressors work but cycle more often. Harbor Freight 80-gallon works fine for most shops. Q: How long do the seals last? A: 12-18 months with daily use. Nitrile seals are cheapest, polyurethane lasts longer, Viton costs more but handles synthetic oils better. Q: Will it pump cold thick oil? A: Yes, but slower. 15W-40 oil at 40°F takes twice as long as warm oil. Most shops warm oil drums in winter for faster service. Q: Can I use it for waste oil too? A: Technically yes, but dirty oil wears seals faster. Better to use separate pump for waste oil or clean this pump thoroughly after waste oil use. Q: What if my air pressure drops? A: Flow rate drops proportionally. If shop air drops from 8 bar to 6 bar, flow rate drops about 25%. Still works, just slower. Q: How do I know if seals need replacement? A: Oil leaks around pump body or flow rate drops significantly. Usually gives warning signs before complete failure. Bottom Line Numbers Cost Comparison (Annual Operating) This pump: $150 (seals air cost) Electric pump: $300 (power motor service) Manual pumps: $50 (just muscle power) Time Savings (Real Shop Data) Gravity flow: 8-12 minutes per 5L oil change Manual pump: 5-8 minutes per change This pump: 2-4 minutes per change Time saved: 4-8 minutes per service Productivity Boost With 15 oil changes daily: Time saved: 60-120 minutes Additional service capacity: 2-4 more jobs Extra daily revenue: $150-300 Payback period: 2-4 months for most shops What You Get In the Box: Pump assembly (choose your model) Suction tube (standard length) Air hose with quick-connects Mounting hardware Basic tool kit Operating manual First Year Costs: Pump: $800-1200 (depends on model) Installation: $100-200 (if you hire someone) Seals: $30 (mid-year replacement) Total: $930-1430 What It Saves You: Labor time: $3000 annually Customer satisfaction: Better service speed Equipment flexibility: One pump, many oils This pump isn’t magic, but it’s math. Faster service = more customers = more money. The numbers work. Related lubrication resources Oil lubrication pumps · Industrial oil pumps guide · Oil filtration guide