4KW 5.5HP Single Phase 220V 700L/min 10Bar Lubricated Screw Air Compressor With Tank For Car Maintenance

A 4kW/5.5HP single phase 220V lubricated rotary screw air compressor rated around 700L/min at 10 bar is designed for car maintenance workshops, tire shops, quick-service garages, detailing bays, body-prep stations and mobile repair containers where three-phase power is limited. The integrated package combines an oil-injected screw airend, 220V single phase motor or PM VSD drive, air-cooled aftercooler, air receiver, controller, optional refrigerated dryer and filtration in one cabinet. Compared with a piston compressor, the screw platform delivers continuous, low-pulse air for impact wrenches, tire changers, balancers, blow guns, lifts, sanders and light spray-prep without frequent valve service or overheating during all-day garage duty.

For automotive service, 10 bar gives headroom above the 6–8 bar used by most pneumatic tools and above the 8–10 bar required by many tire mounting, bead-breaking and heavier impact applications, while the receiver stabilizes pressure during simultaneous tool demand.

Core Specification Reference

Market 4kW/5.5HP single phase screw listings appear with 10 bar, 220V, lubricated, stationary configuration and tank-mounted options; another 4kW PM mini platform lists 10 bar but 360L/min with 70L tank, while a conventional 4kW/5.5HP 8 bar tank-mounted screw lists about 0.58m³/min/20.5cfm with 300L receiver. Because FAD falls as pressure rises, a “700L/min” model must be confirmed by factory test at 10 bar, ambient temperature and rated voltage—not by motor horsepower alone.

Why Lubricated Screw For Car Maintenance

Oil-injected screw compressors are the default choice for general automotive air because they are durable, efficient and easier to service than pistons for continuous duty.

• Continuous flow: supports back-to-back tire changes, impact use and blow-off without large pressure swing.

• Low pulsation: steadier air than piston, better for precision regulators, balancers and spray-prep.

• Cooler operation: screw airend and aftercooler manage all-day load better than reciprocating pumps.

• Lower maintenance than piston: no reed-valve overhaul; mainly oil, filters, separator and drains.

• 10 bar headroom: covers tire bead breaking, truck/SUV higher inflation, 3/4in impact and shop tools from one system.

• Single phase 220V: installs where three-phase is unavailable, provided the panel has a dedicated circuit.

For spray painting and high-purity body work, lubricated screw air still works with proper drying and filtration, but oil-free compression or reinforced desiccant/carbon treatment should be evaluated where the paint system prohibits oil aerosol.

Automotive Air Demand And Sizing

A 700L/min/10bar screw equals about 24.7cfm. This suits a single busy service bay, a small tire shop or two-light bays with alternating tools. It is not usually enough for several heavy sanders, big sandblast pots or multi-bay full-service collision production.

Sources use similar ranges: tire inflator 1–2cfm, blow gun 2–4cfm, 1/2in impact 4–6cfm, 3/4in impact 7–12cfm, DA 8–13cfm, HVLP 10–15cfm, sandblast 20–50cfm. Sizing method: list each tool’s consumption at working pressure, apply simultaneous-use factor, add 30% margin for leaks/filter/dryer/pipe loss, then select FAD. If a one-bay shop runs impact + blow gun + tire inflator alternately, 700L/min at 10bar is often adequate; if it runs two 3/4in impacts plus DA plus blast simultaneously, a larger screw is required.

Receiver Tank Selection

Tank volume does not increase true FAD, but it buffers surges and reduces compressor cycling.

A 4kW conventional tank-mounted screw may use 300L at 8 bar; a 4kW PM mini may use 70L for compact mobile/service rooms. For car maintenance, 200–300L is a practical balance between footprint and surge control unless multiple heavy tools run together.

Drying And Filtration For Garage Air

Lubricated screw air contains moisture, oil aerosol and particles even at 4kW. Treat air by endpoint.

General automotive tools may use 6–10 bar and standard dried/filtered air; spray painting needs stricter filtration and often desiccant or oil-free supply to avoid defects. Specify ISO 8573-1 purity classes for particles, dew point and oil when the workshop does refinish work.

Single Phase 220V Electrical Planning

A 4kW load at 220V is about 18A ideal; motor power factor and drive losses can raise planning current, with general single-phase motor guidance around 18–22A for 4kW class. Fixed-speed motors also have starting inrush, while PM VSD soft-starts ramp frequency and reduce peak starting current.

Planning rules:

• Use a dedicated 220V single phase branch; do not share with welders, heaters, EV chargers or multiple big tools.

• Read compressor nameplate FLA or VSD input amps, voltage, frequency and starting method before wiring.

• Size conductors for continuous motor load plus voltage-drop margin; for 4kW/220V short fixed runs, general guidance may allow around 2.5–4mm² copper depending on ambient/conduit/length, while longer runs need larger wire.

• Size breaker/starter per motor standard and manufacturer manual; NEC-style motor practice sizes conductors about 125% of FLA and allows inverse-time breakers larger than full-load to ride through inrush, but local code and the nameplate govern.

• Prefer PM VSD or soft starter for smoother 220V start, tighter pressure and lower unloaded power.

• Avoid extension cords; permanent wiring reduces voltage drop, heating and nuisance trips.

• For 60Hz export markets, confirm 60Hz motor or wide-frequency VSD; a 50Hz-only motor must not be connected to 60Hz without factory re-rate.

If the workshop later adds multiple bays, sanders, blast or large truck-tire equipment, plan three-phase 7.5–15kW screw capacity instead of oversizing single phase 220V.

Lubricated Screw Maintenance Program

Oil-injected packages need disciplined fluid and separator care to keep 10 bar FAD and low oil carryover.

For car maintenance, automatic or zero-loss drains on tank, dryer and filter bowls are strongly recommended because tire dust and moisture accumulate quickly. Route oily condensate through an oil-water separator.

Installation Layout For Auto Workshops

• Place the screw cabinet in a ventilated room with rear cooler clearance; enclosed models still need airflow.

• Keep intake away from brake dust, tire talc, exhaust, paint mist and blast media.

• Sequence treated air: airend → aftercooler/moisture separator → receiver → dryer → coalescing → particulate → point of use; add carbon/desiccant for spray.

• Use separate regulated branches: tires/impact 8–10bar, general tools 6–8bar, blow gun lower, spray gun per HVLP/LVLP spec, higher only for truck/AG tires.

• Size garage piping for 10 bar flow with low drop; undersized hose causes false “low compressor” complaints even when FAD is adequate.

• For body shop, isolate paint-supply filtration from general tire/impact lines to avoid cross-contamination.

Application Examples

Single-bay general car maintenance

4kW/5.5HP 220V single phase, 10bar, 700L/min, 200–300L tank, refrigerated dryer, coalescing+particulate. Covers tire inflation, 1/2in impact, blow gun, tire changer and light DA. Add desiccant branch if winter outdoor lines or spray-prep are used.

Tire shop / quick service

4kW screw at 700L/min can serve one changer plus inflation and light impact; for two active changers, truck tires and simultaneous inflation, verify peak CFM and consider 300L+ tank or 7.5kW upgrade. Tire-shop guidance for 2 bays with several simultaneous tools often needs 600–900L/min real flow.

Detailing and car wash prep

Use 10bar main for utility, regulate foam/blow-off branches lower, install dryer and coalescing/particulate; outdoor/winter blow-off benefits from desiccant to prevent frozen regulators.

Body-prep and light refinish

Lubricated 4kW screw with refrigerated dryer for general prep, plus desiccant low dew point and carbon/coalescing/fine particulate for spray. For premium booth work or strict oil-free spec, evaluate oil-free screw rather than relying on filtration alone.

Frequently Asked Questions

Is 4kW/5.5HP enough for a car repair shop?

For one bay with tires, impact, blow gun and light sanding, 700L/min at 10bar is often enough. For multiple heavy impacts, DA sanders, blast cabinets or two tire changers simultaneously, calculate total CFM first; the compressor may need 7.5kW or larger.

Will it really deliver 700L/min at 10 bar?

Request the factory FAD test at 10 bar, 220V, 50 or 60Hz and rated ambient. FAD falls as pressure rises; a model rated 700L/min at 8bar may deliver less at 10bar, while a true 10bar-optimized screw should be tested at 10bar before purchase.

Do I need three-phase power?

No. The unit is 220V single phase for sites without three-phase. Still install a dedicated circuit, correct conductor size and proper breaker/starter; for future multi-bay expansion, three-phase screw packages are more efficient at 7.5kW and above.

What tank size should I choose for car maintenance?

Light single-bay/home use can use 70–100L; active garage tire/impact work usually benefits from 200–300L; busy tire or mixed sander/spray prep may need 300–500L. Tank buffers surges but cannot replace insufficient screw FAD.

Why lubricated instead of oil-free?

Lubricated screw is usually lower cost, durable and efficient for general tools, tires and blow-off. Choose oil-free or reinforced desiccant/carbon filtration for spray painting, food-adjacent service, medical fleet or any process that prohibits oil aerosol.

What dryer and filters are required?

For general car maintenance, refrigerated dryer plus coalescing and particulate filtration is standard. For spray-prep, add carbon and possibly desiccant; for full paint booths, specify low dew point and ISO 8573-1 purity class, and consider oil-free compression.

How often should oil and separator be changed?

Follow the manufacturer by operating hours, oil analysis and 10 bar duty. Light garages may follow 1000–2000h mineral or longer synthetic intervals; daily tire/impact shops should inspect earlier, sample oil and track separator differential to avoid pressure loss and high oil carryover.

Is VSD better than fixed-speed for 4kW single phase?

For variable garage demand, PM VSD improves pressure stability, reduces unloaded power and soft-starts on 220V, which helps weaker single phase supplies. Fixed-speed is simpler and cheaper for steady near-constant load, but starting current and part-load efficiency are less favorable.

Can this run truck tires?

Passenger, SUV and many light-truck tires are within 10 bar capability; large truck/AG tires needing 12bar or high-volume inflation may require higher-pressure screw, larger tank or three-phase capacity. Confirm bead-breaker and inflation peak CFM before specifying.

What should I request from suppliers?

Factory FAD at 10bar and at any 8bar option, 220V 50/60Hz rating or VSD frequency range, full-load and starting current, tank volume/code, dryer type and dew point, filter grades and ISO 8573-1 class, oil specification, separator interval, noise at working pressure, protection functions, wiring diagram, spare parts list and test report.

A 4kW/5.5HP 220V single phase 700L/min 10bar lubricated screw compressor with tank is best specified as one car-maintenance system: verified 10bar FAD, correctly sized receiver, dedicated single phase electrical design with VSD or soft-start, refrigerated drying with desiccant/carbon options and staged coalescing/particulate filtration to the workshop’s ISO 8573-1 target. For tire service, impact work, blow-off, lifts, light sanding and spray-prep, this platform delivers continuous, dry, low-pulse garage air without three-phase power.