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KJ-4EW
FSKEJU
KJ-4EW
The FSKEJU KJ-4EW 70L oil-free dental air compressor is designed to provide compressed air for multi-chair dental clinics and dental unit installations. With 1700W power, a rated airflow of 210 L/min, 70L tank capacity and 7.5 bar pressure, this model is configured as a one-compressor-for-four-chair solution.
The KJ-4EW is available for 110V/60Hz or 220V/50Hz electrical systems and has a noise level of 75 dB. Its oil-free configuration is designed for dental compressed-air applications where the compressor forms part of the clinic's central air-supply system.
For other clinic capacities, browse our dental air compressor range.
KJ-4EW Product Snapshot
Model: KJ-4EW
Chair Configuration: One for Four
Tank Capacity: 70L
Lubrication: Oil-Free
Power: 1700W
Rated Airflow: 210 L/min
Pressure: 7.5 bar
Noise Level: 75 dB
The KJ-4EW is configured as a One for Four dental air compressor for installations where one compressor supplies compressed air to four dental chairs through a shared air-supply system.
This configuration can be considered for multi-operatory dental clinics that prefer a centralized compressor arrangement instead of installing a separate compressor for every treatment chair.
The number of dental chairs should not be used as the only compressor-sizing criterion. Actual air demand also depends on the connected dental units, air-driven instruments and how many treatment stations may operate simultaneously.
Compressor Sizing Note
“One for Four” describes the intended chair configuration of the KJ-4EW. For clinics with high simultaneous compressed-air demand, compare the required total airflow of the connected dental units and air-driven equipment with the compressor capacity before final selection.
The KJ-4EW provides a rated airflow of 210 L/min. Airflow is one of the key specifications when selecting a dental compressor for several treatment stations because it describes how much compressed air the compressor can supply over time.
For a four-chair installation, the available airflow should be compared with the expected combined demand of the connected dental equipment. This is particularly important where multiple operatories may use air-driven instruments at the same time.
The KJ-4EW uses an oil-free compression configuration. Lubricating oil is not used within the compression chamber as part of the normal compression process.
Oil-free compressor design should still be considered together with the complete clinic air system. Air quality at the dental unit can also depend on filtration, moisture management, air-line condition and the installation and maintenance of downstream components.
The KJ-4EW is equipped with a 70L air tank. The tank stores compressed air and works together with the compressor output as air demand changes during clinic operation.
Tank capacity and compressor airflow describe different characteristics. A larger tank does not replace the need for sufficient compressor output, so the KJ-4EW should be evaluated using both its 70L tank capacity and 210 L/min rated airflow.
The KJ-4EW has a pressure specification of 7.5 bar. Compressor pressure should be considered together with the requirements of the downstream dental units and any pressure-regulation components installed in the clinic's compressed-air system.
The compressor pressure specification should not automatically be treated as the operating pressure required at every dental chair. Final pressure at the dental unit may be controlled through regulators and other components according to the connected equipment specifications.
The KJ-4EW is available in 110V/60Hz and 220V/50Hz electrical configurations. Please specify the required voltage and frequency according to the destination market and installation site when requesting a quotation.
Electrical compatibility should be reviewed before production and shipment because voltage and frequency requirements vary between markets and clinic installations.
The KJ-4EW has a specified noise level of 75 dB, providing a reference when planning where the compressor will be installed within or near a dental clinic.
Actual sound experienced in the clinic can differ according to measurement distance, compressor load, room construction, ventilation, floor vibration and installation location. Where acoustic performance is an important project requirement, measurement conditions should be considered when comparing different compressor models.
Noise Comparison Tip
When comparing dental compressors, review the measurement conditions together with the stated dB value. Distance, operating state and test environment can materially affect reported noise levels.
The KJ-4EW combines 1700W power, 210 L/min rated airflow, a 70L air tank and 7.5 bar pressure in an oil-free compressor configuration for four-chair dental installations.
KJ-4EW 70L Dental Air Compressor | |
|---|---|
Model | KJ-4EW |
Chair Configuration | One for Four / Four Dental Chairs |
Lubrication Type | Oil-Free |
AC Voltage | 110V / 60Hz or 220V / 50Hz |
Power | 1700W |
Rated Airflow | 210 L/min |
Noise Level | 75 dB |
Tank Capacity | 70L |
Pressure | 7.5 bar |
Dimensions | Available upon request |
Net / Gross Weight | Available upon request |
A four-chair dental compressor should be planned as part of the clinic's complete compressed-air infrastructure. Electrical supply, ventilation, compressor location, air-line routing and the connected treatment equipment should all be reviewed before installation.
✓ Dental chair quantity: determine whether the planned installation requires a compressor configured for four treatment chairs.
✓ Simultaneous air demand: review how many dental chairs and air-driven instruments may operate at the same time.
✓ Voltage and frequency: select 110V/60Hz or 220V/50Hz according to the installation site.
✓ Compressor location: provide suitable space for ventilation, inspection and routine service access.
✓ Air-line routing: plan piping from the compressor to all connected treatment rooms while considering pressure management and service access.
✓ Air treatment: determine the required filtration, moisture-management and downstream pressure-control arrangement.
✓ Noise management: consider compressor placement and room construction where sound transmission into treatment areas is a concern.
✓ Shipping data: request dimensions, weight and packing information when these details are required for transport planning.
A centralized compressor can supply several dental chairs from one air source, reducing the number of separate compressor units required throughout the clinic. This can simplify equipment placement in practices designed around a shared compressed-air system.
The trade-off is that compressor sizing and air distribution become more important. If one compressor supplies several treatment rooms, the clinic should consider peak demand, air-line design and the effect of compressor downtime on the connected operatories.
The KJ-4EW is configured for four dental chairs, but compressor selection should still be evaluated according to actual equipment demand rather than simply matching the stated chair count to the number of operatories.
For a clinic expansion project, consider current chair quantity together with planned future treatment stations. Where projected air demand exceeds the available compressor capacity, another compressor configuration may provide a better match.
Routine inspection and maintenance help keep the compressor and downstream air system operating according to the intended equipment requirements. Maintenance intervals should follow the operating documentation supplied with the KJ-4EW.
Depending on the installed system, routine checks may include condensate management, filters, air connections, tank condition, electrical components and the condition of downstream air lines. The compressor should be isolated from electrical power and residual pressure as required before servicing.
Founded in 2009 in Foshan, Guangdong, FOSHAN KEJU MEDICAL APPARATUS CO., LTD. designs, develops, manufactures and supplies dental equipment, including dental units and dental air compressors.
Our dental air compressor range includes different tank capacities and chair configurations for clinic and distributor requirements. We can assist with compressor selection according to clinic scale, available electrical supply and expected compressed-air demand.
Learn more about our manufacturing background on the FSKEJU About page or compare additional dental air compressor models.
The KJ-4EW is configured as a “One for Four” compressor for installations serving four dental chairs. Final suitability should also be evaluated against the simultaneous compressed-air demand of the connected equipment.
The rated airflow is 210 L/min.
Yes. The KJ-4EW uses an oil-free compression configuration for dental compressed-air applications.
The KJ-4EW is equipped with a 70L air tank.
The pressure specification is 7.5 bar.
The KJ-4EW is available in 110V/60Hz and 220V/50Hz electrical configurations. Please specify the required version according to your destination market and installation conditions when ordering.
The KJ-4EW has a specified noise level of 75 dB. Actual installed sound can also be influenced by compressor placement, room construction, operating conditions and measurement distance.
Please provide the required quantity, destination country, voltage, number of dental chairs and expected equipment configuration. For multi-chair projects, information about simultaneous compressed-air demand can also help our team review the appropriate compressor selection.
Request a KJ-4EW Compressor Quotation
Provide your destination market, voltage, number of dental chairs, expected air-demand configuration and required quantity. Our team can then review the applicable KJ-4EW configuration, packing information and order requirements with you.
