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Oil Free Scroll Dental Air Compressor 200-500Liter 11kW

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Oil Free Scroll Dental Air Compressor 200 Liter 500 Liter 11kW for Hospital

Why the 11kW Oil-Free Scroll Compressor with 200L/500L Tank Is the Definitive Hospital and Dental Air Solution

When a hospital wing, dental clinic, or medical facility demands genuine ISO 8573-1 Class 0 oil-free air​ for multiple dental chairs, breathing air systems, surgical handpieces, laboratory analyzers, and central medical air distribution, the engineering answer has converged on a single architecture: the 11kW (15 HP) oil-free scroll air compressor coupled with a 200L or 500L air receiver tank. By using multiple precision-machined spiral elements — fixed and orbiting scrolls meshing together — that compress air without any oil in the compression chamber, and by driving the system through IE3 premium-efficiency AC motors, these machines deliver approximately 1.2 m³/min of 100% oil-free air at 8 bar​ while operating at noise levels of 60±2 dB(A)​ .

The 11kW power class represents the optimal mid-capacity tier for hospital and dental applications. It is powerful enough to serve 6–12 dental chairs simultaneously, supply breathing air for ward pipelines, drive surgical and orthodontic instruments, and feed laboratory analyzers — yet compact and quiet enough for installation directly inside hospital technical rooms, dental surgery corridors, and clinic utility spaces. The choice between 200L and 500L receiver tanks allows facility planners to precisely match buffer capacity to chair count, peak demand patterns, and available floor space.

Available across working pressures of 8–10 bar (116–145 psi)​ and configured as stationary, AC-powered, oil-free rotary scroll units, the 11kW compressor with 200L/500L tank integration achieves 24/7 reliable operation​ with minimal maintenance, making it the definitive solution for healthcare facilities where air purity, acoustic comfort, and continuous uptime are equally critical .


Oil Free Scrolls Dental Air Compressor 200-500Liter 11kW

Verified Technical Specifications: 11kW Oil-Free Scroll Compressor for Hospital & Dental Applications

The following table consolidates verified specification data from leading manufacturers of 11kW oil-free scroll compressors:

 

Parameter

Specification

Model​

11 kW / 15 HP Oil-Free Scroll (Duplex/Triplex Configuration)

Motor Power​

11 kW / 15 HP (typically 5.5 kW × 2 or 3.7 kW × 3 scroll heads)

Working Pressure​

8–10 bar (116–145 psi, 0.8–1.0 MPa)

Free Air Delivery (FAD) at 8 bar​

1.20 m³/min (1,200 L/min, 42 CFM)

Free Air Delivery (FAD) at 10 bar​

1.05–1.10 m³/min (37–38 CFM)

Noise Level​

55±3 to 64±2 dB(A)

Configuration​

Stationary; multi-scroll modular

Power Source​

AC Power; 380V/3-phase/50Hz (customizable to 220V/110V, 60Hz)

Drive Type​

Belt-driven or direct driven; multi-head control

Lubrication Style​

100% Oil-Free (no oil in compression chamber)

Cooling Method​

Air Cooled — oversized aluminum coolers

Outlet Pipe Diameter​

G3/4" (BSP) or R1

Air Tank Options​

200L, 300L, 500L (medical-grade epoxy-coated)

Dimensions (L×W×H)​

1,000 × 690 × 990 mm to 1,810 × 820 × 1,700 mm

Weight​

340–780 kg (tank-dependent)

Controller​

Advanced PLC with 7-inch color touchscreen; multi-head sequencing

Motor Efficiency​

IE3 premium as standard; IE4/IE5 PM VSD optional

Air Quality​

ISO 8573-1 Class 0 — oil content <0.01 mg/m³

Certifications​

CE, ISO 9001, TÜV Class 0, SGS

Service Life​

30,000+ hours airend; 8,000 hours maintenance-free

Warranty​

1 year complete unit; 2 years on airend

Note on FAD variation:​ Different 11kW scroll configurations deliver varying FAD:

  • Duplex 5.5 kW × 2 heads:​ 1.20–1.25 m³/min at 8 bar

  • Triplex 3.7 kW × 3 heads:​ 1.08–1.20 m³/min at 8 bar

  • Advanced profile single-platform:​ up to 1.65 m³/min at 8–10 bar

4-in-1 Integrated Configuration (Option):

  • Component 1:​ 11kW oil-free scroll compressor — multi-head modular, 100% oil-free by design

  • Component 2:​ Built-in refrigerated air dryer — pressure dew point +3°C to +10°C

  • Component 3:​ 3-stage precision filtration — particulate + activated carbon (5-stage for medical: gas-water separation, dust removal, oil removal, high-precision, bacterial/sterilization)

  • Component 4:​ 200L, 300L, or 500L air receiver tank (medical-grade epoxy-coated internal lining)


Oil Free Scroll Dental Air Compressors 200-500Liter 11kW

The Scroll Compression Principle: Achieving 100% Oil-Free Air by Structural Design

The scroll compressor achieves oil-free operation through a fundamentally different mechanism than piston or screw compressors:

  1. Two spiral elements per head:​ One fixed scroll (stator) and one orbiting scroll (rotor) mesh together with micron-level precision

  2. Orbital motion:​ The orbiting scroll moves in a controlled eccentric path driven by the AC motor — it does NOT rotate on its own axis

  3. Progressive compression:​ Air pockets are trapped at the periphery and progressively squeezed toward the central discharge port

  4. No metal-to-metal contact:​ A simple tip seal design ensures no lubrication is required in the compression chamber — there is no need for oil lubrication

  5. Modular multi-head architecture:​ At 11kW, the system typically combines two 5.5kW scroll heads or three 3.7kW scroll heads, operating in parallel under PLC control

Because no oil enters the compression chamber at any stage, the compressed air is 100% oil-free by structural design​ — achieving ISO 8573-1 Class 0 certification (oil content <0.01 mg/m³) without downstream oil-removal filtration . This is the highest air purity standard available and is mandatory for dental and medical applications​ — regulatory bodies require oil content ≤0.01 mg/m³ in patient air delivery, and oil-lubricated compressors cannot guarantee this standard even with multi-stage filtration .


Ultra-Low Noise: Critical for Hospital and Dental Environments

Hospital and dental environments require operational noise levels that do not disturb patients or staff. The FDA and dental board regulations effectively mandate oil-free operation, while acoustic comfort demands ≤60–70 dB(A) at the source . The 11kW oil-free scroll compressor achieves 55±3 to 64±2 dB(A)​ through four mechanisms :

  • Inherently smooth orbital motion:​ The orbiting scroll's continuous orbital motion (not rotary) produces minimal torque fluctuation and near-zero vibration — pencils placed standing on top of the compressor remain upright during operation

  • Low rotational speed:​ Scroll elements turn slowly (around 3,200 RPM in belt-driven configurations) , reducing aerodynamic and mechanical noise

  • Sound-insulated enclosure:​ Heavy-duty acoustic canopy with vibration-dampening rubber feet thoroughly seals and absorbs residual micro-vibrations

  • No metal-to-metal contact:​ The absence of contact between the fixed and orbiting scrolls eliminates frictional noise entirely

Verified noise benchmark:​ A typical 11kW oil-free scroll compressor operates at 60±2 dB(A)​ — comparable to a normal conversation and significantly quieter than any oil-flooded screw compressor in the same power class (which operates at 68–75 dB(A)). This acoustic performance enables installation directly inside hospital technical floors, dental operatories, and clinic corridors without dedicated compressor rooms or complex acoustic baffling.

For dental treatment rooms specifically, industry guidance recommends ≤60 dB(A) with the door closed​ , and modern scroll technology comfortably meets this threshold.


200L vs. 500L Tank: Making the Right Choice for Hospital & Dental Applications

The air receiver tank is not merely a storage vessel — it is a critical buffer that stabilizes pressure, reduces motor cycling, and protects downstream equipment. For 11kW scroll compressors serving hospital and dental applications, both 200L and 500L configurations are common, but the optimal choice depends on specific demand profiles .

 

Consideration

200L Tank

500L Tank

Typical dental chair support​

6–8 chairs (standard load)

10–14 chairs (full load)

Physical footprint​

1,000 × 690 × 990 mm (compact)

1,810 × 820 × 1,700 mm (larger)

Weight​

340–450 kg

520–780 kg

Motor cycling​

Moderate — adequate for steady demand

Minimal — superior for fluctuating demand

Peak demand buffer​

Adequate for 2–3 simultaneous handpieces

Excellent for 4+ simultaneous handpieces

Pressure stability​

±0.1 bar under normal cycling

±0.05 bar — near-constant delivery

Recommended for​

Single dental department, 6–8 chairs, small hospital ward

Central dental clinic, 10–14 chairs, multi-ward hospital distribution

Startup surge absorption​

Adequate

Superior — eliminates pressure dips during CAD/CAM milling or air-abrasion activation

Space constraint trade-off​

Fits tighter utility rooms

Requires dedicated plant space

Industry standard:​ Dental clinic tank sizing follows clear guidelines — 200–300L for 1–2 chair operations, 300–400L for 3–5 chairs, and 400–500L+ for 6+ chairs​ . An 11kW compressor paired with a 200L tank serves 6–8 chairs effectively; paired with a 500L tank, it becomes the central air source for a 10–14 chair dental hospital or a multi-ward medical facility.

The Buffer Capacity Rule:​ Larger tanks reduce motor start/stop cycles, extending motor life and reducing wear on the scroll heads. For facilities with intermittent high-demand events (simultaneous CAD/CAM milling, air-abrasion, and multiple high-speed handpieces), the 500L tank provides superior performance and 30–40% fewer motor cycles per day.


Oil Free Scroll Dental Air Compressor 200-500Liter 11kW

Intelligent PLC Control: Multi-Head Sequencing for 11kW Systems

The 11kW oil-free scroll compressor relies on a sophisticated PLC controller to manage its multiple scroll heads:

 

Control Function

Capability

Display​

7-inch color touchscreen with real-time operating data

Multi-head sequencing​

PC board controls the running of the number of scroll heads based on air requirement

Alternation logic​

Rotates duty cycles across all heads to equalize wear

Real-time monitoring​

System pressure, discharge temperature per head, cumulative running hours

Fault diagnosis​

Active fault codes with descriptive text; automatic shutdown for over-temperature, over-pressure, motor overload

Service reminders​

Air filter replacement alerts every 2,500 hours

Pressure regulation​

Precision control maintains ±0.1 bar stability

Energy optimization​

Activates only the number of heads needed — 30% energy savings versus fixed-speed equivalents

Communication​

Optional Modbus RS485 for BMS integration in hospital environments

This intelligent control ensures that as demand fluctuates throughout the day — from overnight low-demand to morning rush with multiple chairs operating — the PLC engages exactly the right number of scroll heads, eliminating the "unload tax" that plagues fixed-speed compressors and delivering substantial energy savings.


Hospital & Dental Application Matching Guide

 

Application

Optimal Tank

Chair/Load Count

Key Requirement Met

Dental clinic (6–8 chairs)​

200L

6–8 chairs

100% Class 0, 60±2 dB(A), 1.2 m³/min at 8 bar

Dental hospital (10–14 chairs)​

500L

10–14 chairs

Superior buffer capacity, minimal cycling

Orthodontic & specialist clinic​

200–300L

4–6 chairs

Continuous demand for handpieces, curing lights

CAD/CAM dental milling center​

500L

8–12 chairs + milling

Stable pressure during sustained 4–6 CFM milling loads

Hospital ward breathing air​

500L

20–40 bed ward

24/7 supply, N+1 redundant capability

Central medical air distribution​

500L

Multi-department

8 bar stable, ISO Class 0, BMS integration

Surgical & dental handpieces​

200–500L

Variable

Clean dry air for orthopaedic/neuro-surgical drills

Dental laboratory​

200L

Bench + 2–4 chairs

Ultra-quiet (60 dB(A)), point-of-use

Hospital sterilization department​

500L

Autoclaves + handpieces

High peak demand, stable pressure

Oxygen generator feed (PSA)​

500L

Central oxygen plant

100% oil-free feed, integrated drying

ICU & recovery ward​

500L

10–20 beds

Continuous 24/7, zero downtime tolerance

Dental school / teaching clinic​

500L

15–20 chairs

Large buffer for simultaneous student operation

Mobile dental van (large)​

200L

2–4 chairs

Compact, lightweight, 60 dB(A)

Pharmaceutical suite (small)​

200–300L

Bench-scale

ISO 13485 compliant, Class 0

Chair Count Calculation:​ Dental industry standards require 7–15 CFM per operatory depending on equipment load, plus a 25–50% safety margin for peak demand . A 4-operatory practice needs 25–30 CFM; an 11kW scroll compressor delivering 42 CFM at 8 bar comfortably serves 6–8 chairs with margin — and with a 500L tank, extends to 10–14 chairs under realistic duty cycles.


Energy Efficiency: Multi-Head Architecture Delivers 30% Savings

The 11kW oil-free scroll compressor's modular architecture delivers substantial energy savings:

 

Feature

Multi-Head 11kW Scroll

Equivalent Fixed-Speed

Energy efficiency​

30% savings vs. piston

Baseline

Volumetric efficiency​

100% — no de-ration from wear

De-rates due to wear

Partial load operation​

Only required heads activate — 25–40% additional savings

Full motor runs continuously

Unload power consumption​

Eliminated through start/stop control

Up to 40% of full-load power wasted

IE3 motor standard​

Yes

Varies

Service life​

30,000+ hours

10,000 hours (piston)

For an 11kW unit running 6,000 hours/year at 2,800–$3,200 per year in electricity cost reduction**. The multi-head PLC control adds another 25–40% savings during partial-load operation by activating only the necessary scroll heads .


Installation and Site Requirements

 

Requirement

11kW + 200L

11kW + 500L

Installation​

Foundation-free, stationary, vibration-dampening mounts

Foundation-free, stationary, reinforced floor for 500–780 kg

Power supply​

380V/3-phase/50Hz (customizable)

Same

Footprint (L×W×H)​

1,000 × 690 × 990 mm

1,810 × 820 × 1,700 mm

Weight​

340–450 kg

520–780 kg

Noise level​

55±3 to 64±2 dB(A)

Same

Motor protection​

IP54/IP55, IE3 efficiency

Same

Cooling method​

Air cooled — oversized aluminum coolers

Same

Ambient temperature​

-5°C to 45°C

Same

Outlet diameter​

G3/4" (BSP) or R1

Same

Commissioning time​

4–8 hours (plug-and-go for 4-in-1)

6–10 hours

Lead time​

15 working days (standard voltage)

20–25 working days

The stationary configuration with vibration-dampening rubber feet requires no poured concrete foundation . For 4-in-1 integrated configurations, a single power connection and a single air outlet are all that is required — installation time is reduced to under half a day.


Maintenance: The "Virtually Maintenance-Free" Promise for Healthcare

Oil-free scroll compressors have the simplest maintenance profile of any medical compressor technology:

 

Service Item

Interval

Purpose

Air intake filter element

Every 2,500 operating hours or 1 year

Prevent dust ingestion

PLC controller diagnostics

Annual

Verify fault detection, BMS communication

Automatic drain system check

Monthly

Reduce condensate buildup

Refrigerated dryer check

Annual

Verify dew point performance

Full airend service

30,000+ hours

Bearing and scroll inspection

Complete unit warranty

1 year

Manufacturer coverage

Airend warranty

2 years

Extended airend coverage

Annual maintenance cost:​ With only the air filter as the primary consumable, the 11kW scroll compressor achieves 8,000 hours of maintenance-free operation​ . There are no oil changes, no oil separator replacements, and no oil-laden condensate disposal under hazardous waste regulations. The simple structure with fewer wearing parts greatly reduces the possibility of component replacement, delivering the lowest maintenance cost in its power class for healthcare applications.


Frequently Asked Questions

What exactly is an 11kW oil-free scroll dental air compressor with 200L/500L tank?

It is a stationary rotary scroll compressor that uses multiple precision-machined spiral elements (fixed + orbiting scrolls) to compress air without any oil in the compression chamber. Powered by an 11kW (15 HP) AC motor driving two 5.5kW or three 3.7kW scroll heads in parallel , the unit delivers approximately 1.2 m³/min of 100% oil-free air at 8 bar (1.05–1.10 m³/min at 10 bar). The 200L or 500L air receiver tank provides buffer capacity for dental chairs, breathing air systems, and medical instruments. The absence of oil throughout the entire system achieves genuine ISO 8573-1 Class 0 certification (oil content <0.01 mg/m³) by structural design — not by downstream filtration .

What is the typical FAD (Free Air Delivery) at 8 bar for an 11kW unit?

Leading manufacturers' 11kW oil-free scroll compressors deliver between 1.20 and 1.65 m³/min (1,200–1,650 L/min, 42–58 CFM) at 8 bar​ . The most common configuration — duplex 5.5kW × 2 heads — delivers 1.20–1.25 m³/min . At 10 bar, the FAD reduces to 1.05–1.10 m³/min . This capacity comfortably serves 6–8 dental chairs with a 200L tank, or 10–14 chairs with a 500L tank.

Why is oil-free operation mandatory for dental and hospital applications?

Regulatory bodies including the FDA require dental air delivery systems to maintain oil content ≤0.01 mg/m³ — the exact threshold of ISO 8573-1 Class 0 . Oil-lubricated compressors cannot guarantee this standard even with multi-stage filtration, risking composite bonding failure, infection control violations from aerosolized oil particles, and handpiece damage. All 50 states require oil-free compressed air for dental patient care . In hospital environments, oil contamination in breathing air, surgical instruments, and medical devices poses critical patient safety risks.

Why is the 11kW oil-free scroll compressor quiet enough for hospitals and dental clinics?

Four factors combine: (1) The orbiting scroll's smooth, continuous orbital motion produces minimal torque fluctuation and near-zero vibration — pencils placed standing on top remain upright during operation ; (2) Scroll elements rotate at low speed (approximately 3,200 RPM) ; (3) A heavy-duty sound-insulated enclosure with vibration-dampening rubber feet seals and absorbs residual micro-vibrations ; (4) No metal-to-metal contact eliminates frictional noise. The result is 55±3 to 64±2 dB(A)​ — meeting the dental industry guideline of ≤60 dB(A) in treatment rooms with doors closed .

Should I choose a 200L or 500L air receiver tank?

The choice depends on your chair count and demand pattern:

  • 200L tank:​ Ideal for 6–8 dental chairs, small hospital wards, single dental department. Physical footprint of 1,000 × 690 × 990 mm , weight 340–450 kg.

  • 500L tank:​ Optimal for 10–14 dental chairs, central hospital distribution, multi-ward facilities. Dimensions 1,810 × 820 × 1,700 mm , weight 520–780 kg.

Dental industry standards recommend 200–300L for 1–2 chairs, 300–400L for 3–5 chairs, and 400–500L+ for 6+ chairs​ . The larger 500L tank reduces motor cycling by 30–40%, extends motor life, and provides superior pressure stability (±0.05 bar) during peak demand events like simultaneous CAD/CAM milling.

What does "100% oil-free" mean in a scroll compressor, and what certification applies?

The scroll compression principle operates with no metal-to-metal contact and no oil lubrication in the compression chamber — a simple tip seal design ensures no lubrication is required . This achieves ISO 8573-1 Class 0 certification (total oil concentration <0.01 mg/m³) by structural design, not by downstream filtration. Quality units carry TÜV Class 0 certification, CE marking, ISO 9001, and SGS certification . The FDA recognizes this standard as mandatory for dental patient care .

Do I need a separate air dryer for dental/hospital applications?

A separate refrigerated or desiccant dryer is recommended to achieve low dew point. The optional 4-in-1 integrated configuration includes a built-in refrigerated air dryer (pressure dew point +3°C to +10°C), 3-stage or 5-stage precision filtration (including bacterial/sterilization filter for medical applications), and the 200L/500L receiver tank as standard. This pre-assembled design eliminates complex piping, delivering a true plug-and-go solution. For dental applications, refrigerant dryers are common; for critical hospital applications, desiccant dryers achieving dew points below 0°C should be considered .

What maintenance is required for an 11kW oil-free scroll compressor?

Maintenance is remarkably simple: replace the air intake filter element every 2,500 operating hours or 1 year , check the automatic drain system monthly, and perform annual PLC controller diagnostics. There are no oil changes, no oil separator replacements, and no gearbox lubrication. The unit achieves 8,000 hours of maintenance-free operation​ . The complete unit carries a 1-year warranty, with a 2-year warranty on the airend .

What is the expected service life of the airend?

The scroll compressor's minimal moving parts and absence of metal-to-metal contact translate to exceptional longevity. The 11kW unit achieves 30,000+ hours of reliable operation​ . The multi-head modular architecture (5.5kW × 2 or 3.7kW × 3) ensures that routine service of one head never requires a full system shutdown — the PLC simply isolates the head under maintenance while remaining heads continue operation. The airend carries a 2-year warranty .

Can these units handle full hospital and dental department requirements?

Absolutely. The 11kW oil-free scroll compressor is purpose-engineered for demanding healthcare environments. It can serve 6–14 dental chairs (depending on tank size), supply breathing air for wards, drive surgical and orthodontic instruments, feed laboratory analyzers, and provide central medical air distribution. The 100% oil-free air eliminates any risk of oil contamination in breathing air, dental handpieces, or medical instruments. The ultra-quiet operation (55–64 dB(A)) allows installation directly inside hospital technical floors and dental operatories without acoustic disruption. The stationary multi-head configuration with PLC control ensures 24/7 reliable operation with N+1 redundancy capability.

What voltage and electrical configuration is standard?

The 11kW stationary oil-free scroll compressor operates on 380V/3-phase/50Hz AC power as standard , with customization available for 220V, 110V, 60Hz, and other voltage configurations . The unit uses direct on-line or belt-drive starting and features IE3 premium-efficiency AC motors with IP54/IP55 protection . The PLC controller manages all electrical protection functions including motor overload, over-temperature, and over-pressure automatic shutdown.

How much energy can I save with an 11kW oil-free scroll compressor?

Compared to an equivalent oil-free piston compressor, the scroll technology delivers 30% energy savings​ through advanced scroll profile design and 100% volumetric efficiency . The multi-head PLC control adds 25–40% additional savings during partial-load operation by activating only the necessary scroll heads . For an 11kW unit running 6,000 hours/year at 2,800–$3,200 per year in electricity cost reduction**​ versus an equivalent piston compressor.

How long does delivery take for an 11kW oil-free scroll compressor with 200L/500L tank?

Standard lead time is 15 working days for 200L configurations with standard voltage . 500L configurations and custom voltage/pressure specifications require 20–25 working days . Custom material specifications (e.g., stainless steel pipework, desiccant dryer, BMS integration) may extend lead time. Emergency expedited delivery may be available depending on manufacturer capacity. Units are supplied with exported wooden package as standard.


Bottom Line for Hospital and Dental Facility Procurement Teams

The 11kW oil-free scroll dental air compressor with 200L/500L tank for hospital applications​ represents the definitive solution for healthcare facilities demanding genuine Class 0 oil-free air at the mid-capacity tier with uncompromising acoustic performance and intelligent control. By combining the multi-head scroll compression principle (multiple precision-machined spiral elements with no metal-to-metal contact), IE3 AC motors, a stationary vibration-dampened configuration, and an advanced PLC controller with 7-inch color touchscreen, this technology simultaneously solves six critical challenges:

  1. Achieves 8–10 bar with genuine Class 0 air by design​ — ISO 8573-1 Class 0 certified, oil content <0.01 mg/m³, zero oil in the entire air path; mandatory for dental and medical applications per FDA and state regulations ; TÜV Class 0, CE, ISO 9001, SGS compliant

  2. Delivers ultra-low noise at 55±3 to 64±2 dB(A)​ — meeting the dental industry guideline of ≤60 dB(A) in treatment rooms with doors closed ; enabling point-of-use installation directly in hospital technical floors, dental operatories, and clinic corridors

  3. Flexible tank configuration (200L/500L)​ — 200L serves 6–8 chairs (1,000 × 690 × 990 mm, 340–450 kg); 500L serves 10–14 chairs with superior buffer capacity (1,810 × 820 × 1,700 mm, 520–780 kg); both medical-grade epoxy-coated

  4. Intelligent PLC control with 7-inch color touchscreen​ — multi-head sequencing, alternation logic, real-time monitoring, fault diagnosis, ±0.1 bar pressure stability, Modbus RS485 BMS integration option

  5. Drastically reduces maintenance and energy​ — only air filter replacement every 2,500 hours ; 8,000 hours maintenance-free operation ; 30% energy savings vs. piston ; 25–40% additional savings through multi-head demand-matching ; 30,000+ hours airend service life

  6. 24/7 reliable operation for life-safety applications​ — multi-head modular architecture provides inherent N+1 redundancy; individual head isolation allows servicing without system shutdown

When evaluating your next medical/dental compressed air investment, prioritize:

  1. TÜV Class 0 certification​ — genuine ISO 8573-1 Class 0, oil content <0.01 mg/m³

  2. FAD at 8 bar: 1.20–1.65 m³/min​ — verify the specific model's capacity against your chair count and demand profile

  3. Noise level ≤60 dB(A)​ — acoustic enclosure, low-speed scroll operation, vibration-dampening rubber feet

  4. Tank size matched to demand​ — 200L for 6–8 chairs; 500L for 10–14 chairs or central distribution

  5. Multi-head modular architecture​ — 5.5kW × 2 or 3.7kW × 3 scroll heads for redundancy and energy efficiency

  6. PLC with 7-inch color touchscreen​ — multi-head sequencing, alternation, real-time monitoring, BMS communication

  7. IE3 AC motor, 380V/3-phase/50Hz​ — customizable to 220V/110V, 60Hz worldwide

  8. Optional 4-in-1 integrated design​ — built-in dryer, 3-stage/5-stage filtration, and receiver as standard; 40% space and labor savings

  9. Air-cooled with oversized aluminum coolers​ — reliable operation in ambient temperatures up to 45°C

  10. Application fit​ — 1.2 m³/min at 8 bar serves 6–14 dental chairs; for flows above 1.65 m³/min continuous duty, consider 15kW or 22kW configurations; for flows below 1.2 m³/min, a 7.5kW unit may suffice

A properly specified 11kW oil-free scroll air compressor with 200L or 500L tank will deliver 30,000+ hours of reliable service, genuine Class 0 oil-free air at <0.01 mg/m³ total oil, noise levels of 55–64 dB(A), 30% energy savings versus piston compressors, and 8,000 hours of maintenance-free operation — forming the dependable, compliant, ultra-quiet, and intelligently controlled backbone of your hospital or dental facility's clean compressed air operation.

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Oil Free Scroll Dental Air Compressor 200 Liter 500 Liter 11kW for Hospital

Why the 11kW Oil-Free Scroll Compressor with 200L/500L Tank Is the Definitive Hospital and Dental Air Solution

When a hospital wing, dental clinic, or medical facility demands genuine ISO 8573-1 Class 0 oil-free air​ for multiple dental chairs, breathing air systems, surgical handpieces, laboratory analyzers, and central medical air distribution, the engineering answer has converged on a single architecture: the 11kW (15 HP) oil-free scroll air compressor coupled with a 200L or 500L air receiver tank. By using multiple precision-machined spiral elements — fixed and orbiting scrolls meshing together — that compress air without any oil in the compression chamber, and by driving the system through IE3 premium-efficiency AC motors, these machines deliver approximately 1.2 m³/min of 100% oil-free air at 8 bar​ while operating at noise levels of 60±2 dB(A).

The 11kW power class represents the optimal mid-capacity tier for hospital and dental applications. It is powerful enough to serve 6–12 dental chairs simultaneously, supply breathing air for ward pipelines, drive surgical and orthodontic instruments, and feed laboratory analyzers — yet compact and quiet enough for installation directly inside hospital technical rooms, dental surgery corridors, and clinic utility spaces. The choice between 200L and 500L receiver tanks allows facility planners to precisely match buffer capacity to chair count, peak demand patterns, and available floor space.

Available across working pressures of 8–10 bar (116–145 psi)​ and configured as stationary, AC-powered, oil-free rotary scroll units, the 11kW compressor with 200L/500L tank integration achieves 24/7 reliable operation​ with minimal maintenance, making it the definitive solution for healthcare facilities where air purity, acoustic comfort, and continuous uptime are equally critical.

Verified Technical Specifications: 11kW Oil-Free Scroll Compressor for Hospital & Dental Applications

 

Parameter

Specification

Model​

11 kW / 15 HP Oil-Free Scroll (Duplex/Triplex Configuration)

Motor Power​

11 kW / 15 HP (typically 5.5 kW × 2 or 3.7 kW × 3 scroll heads)

Working Pressure​

8–10 bar (116–145 psi, 0.8–1.0 MPa)

Free Air Delivery (FAD) at 8 bar​

1.20 m³/min (1,200 L/min, 42 CFM)

Free Air Delivery (FAD) at 10 bar​

1.05–1.10 m³/min (37–38 CFM)

Noise Level​

55±3 to 64±2 dB(A)

Configuration​

Stationary; multi-scroll modular

Power Source​

AC Power; 380V/3-phase/50Hz (customizable to 220V/110V, 60Hz)

Drive Type​

Belt-driven or direct driven; multi-head control

Lubrication Style​

100% Oil-Free (no oil in compression chamber)

Cooling Method​

Air Cooled — oversized aluminum coolers

Outlet Pipe Diameter​

G3/4" (BSP) or R1

Air Tank Options​

200L, 300L, 500L (medical-grade epoxy-coated)

Dimensions (L×W×H)​

1,000 × 690 × 990 mm to 1,810 × 820 × 1,700 mm

Weight​

340–780 kg (tank-dependent)

Controller​

Advanced PLC with 7-inch color touchscreen; multi-head sequencing

Motor Efficiency​

IE3 premium as standard; IE4/IE5 PM VSD optional

Air Quality​

ISO 8573-1 Class 0 — oil content <0.01 mg/m³

Certifications​

CE, ISO 9001, TÜV Class 0, SGS

Service Life​

30,000+ hours airend; 8,000 hours maintenance-free

Warranty​

1 year complete unit; 2 years on airend

Note on FAD variation:​ Different 11kW scroll configurations deliver varying FAD:

  • Duplex 5.5 kW × 2 heads:​ 1.20–1.25 m³/min at 8 bar

  • Triplex 3.7 kW × 3 heads:​ 1.08–1.20 m³/min at 8 bar

  • Advanced profile single-platform:​ up to 1.65 m³/min at 8–10 bar

4-in-1 Integrated Configuration (Option):

  • Component 1:​ 11kW oil-free scroll compressor — multi-head modular, 100% oil-free by design

  • Component 2:​ Built-in refrigerated air dryer — pressure dew point +3°C to +10°C

  • Component 3:​ 3-stage precision filtration — particulate + activated carbon (5-stage for medical: gas-water separation, dust removal, oil removal, high-precision, bacterial/sterilization)

  • Component 4:​ 200L, 300L, or 500L air receiver tank (medical-grade epoxy-coated internal lining)

The Scroll Compression Principle: Achieving 100% Oil-Free Air by Structural Design

The scroll compressor achieves oil-free operation through a fundamentally different mechanism than piston or screw compressors:

  1. Two spiral elements per head:​ One fixed scroll (stator) and one orbiting scroll (rotor) mesh together with micron-level precision

  2. Orbital motion:​ The orbiting scroll moves in a controlled eccentric path driven by the AC motor — it does NOT rotate on its own axis

  3. Progressive compression:​ Air pockets are trapped at the periphery and progressively squeezed toward the central discharge port

  4. No metal-to-metal contact:​ A simple tip seal design ensures no lubrication is required in the compression chamber — there is no need for oil lubrication

  5. Modular multi-head architecture:​ At 11kW, the system typically combines two 5.5kW scroll heads or three 3.7kW scroll heads, operating in parallel under PLC control

Because no oil enters the compression chamber at any stage, the compressed air is 100% oil-free by structural design​ — achieving ISO 8573-1 Class 0 certification (oil content <0.01 mg/m³) without downstream oil-removal filtration. This is the highest air purity standard available and is mandatory for dental and medical applications​ — regulatory bodies require oil content ≤0.01 mg/m³ in patient air delivery, and oil-lubricated compressors cannot guarantee this standard even with multi-stage filtration.

Ultra-Low Noise: Critical for Hospital and Dental Environments

Hospital and dental environments require operational noise levels that do not disturb patients or staff. The FDA and dental board regulations effectively mandate oil-free operation, while acoustic comfort demands ≤60–70 dB(A) at the source. The 11kW oil-free scroll compressor achieves 55±3 to 64±2 dB(A)​ through four mechanisms:

  • Inherently smooth orbital motion:​ The orbiting scroll's continuous orbital motion (not rotary) produces minimal torque fluctuation and near-zero vibration — pencils placed standing on top of the compressor remain upright during operation

  • Low rotational speed:​ Scroll elements turn slowly (around 3,200 RPM in belt-driven configurations), reducing aerodynamic and mechanical noise

  • Sound-insulated enclosure:​ Heavy-duty acoustic canopy with vibration-dampening rubber feet thoroughly seals and absorbs residual micro-vibrations

  • No metal-to-metal contact:​ The absence of contact between the fixed and orbiting scrolls eliminates frictional noise entirely

Verified noise benchmark:​ A typical 11kW oil-free scroll compressor operates at 60±2 dB(A)​ — comparable to a normal conversation and significantly quieter than any oil-flooded screw compressor in the same power class (which operates at 68–75 dB(A)). This acoustic performance enables installation directly inside hospital technical floors, dental operatories, and clinic corridors without dedicated compressor rooms or complex acoustic baffling.

For dental treatment rooms specifically, industry guidance recommends ≤60 dB(A) with the door closed, and modern scroll technology comfortably meets this threshold.

200L vs. 500L Tank: Making the Right Choice for Hospital & Dental Applications

The air receiver tank is not merely a storage vessel — it is a critical buffer that stabilizes pressure, reduces motor cycling, and protects downstream equipment. For 11kW scroll compressors serving hospital and dental applications, both 200L and 500L configurations are common, but the optimal choice depends on specific demand profiles.

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