Anti-Decubitus Mattress Fan Selection Guide | JENTECH JB4010, JB4020, JB5010, JB5015, JB5215, JB7015 & JB7620

JENTECH Cooling Fan Selection Guide: Avoid Common Mistakes by Evaluating Airflow, Static Pressure, Noise, Power Consumption and Installation Space

How do you choose the right ventilation fan for an electric anti-decubitus mattress? Can an ultra-thin 40 × 40 × 10 mm fan meet the requirements? What are the differences between the 40 × 40 × 20 mm and 50 × 50 × 15 mm models? If the air circuit has relatively high resistance, should you prioritize higher static pressure or choose a larger fan? For equipment designed to operate for extended periods, how can you balance noise, power consumption and reliability?

These are common questions faced by procurement teams and engineering professionals during product development, prototype testing and production planning.

For electric anti-decubitus mattresses, alternating-pressure mattresses and related care equipment, fan selection involves much more than simply choosing a fan that fits the available space. Actual performance depends on the air circuit, air-cell volume, valve resistance, control strategy and installation conditions.

An unsuitable fan may result in insufficient airflow, slow inflation, excessive operating noise, inadequate power supply capacity or installation incompatibility. Even replacing an existing model with a higher-speed fan does not necessarily solve the underlying problem.

Shenzhen JENTECH Electronics Co., Ltd. (JENTECH) offers fan products in multiple sizes, voltage options and performance grades. This article explores seven JB series models and explains how to evaluate miniature fans according to practical application requirements.

Important note: The JB series specifications in this article are intended for preliminary product selection and comparison. Miniature centrifugal blowers, axial fans and dedicated air pumps have different airflow characteristics and applications. Their suitability for a particular anti-decubitus mattress must be verified against the actual system design, airflow performance and applicable equipment safety requirements.

1. Why Is Airflow System Design Important for Electric Anti-Decubitus Mattresses?

Electric anti-decubitus mattresses commonly use air pumps, control valves, tubing and inflatable air cells to provide inflation, deflation, pressure adjustment or alternating support. Internal structures and operating principles vary between products, so the appropriate fan or pump must be selected according to the specific design.

Several factors should be considered when developing the airflow system.

1.1 Air Cell Inflation: More Airflow Is Not Always Better

When a fan or pump directly supplies air to inflatable cells, engineers need to evaluate both the volume of air delivered per unit of time and the airflow available at the required operating pressure.

For example, a product developer may want to shorten inflation time but discover that the prototype inflates more slowly than expected. Before concluding that the fan speed is insufficient, engineers should investigate:

• Whether the tubing is excessively long or has an insufficient internal diameter.

• Whether valves, filters or other components create excessive resistance.

• Whether air-cell pressure changes significantly during inflation.

• Whether the fan can deliver sufficient airflow at the actual operating pressure.

• Whether air leakage, loose connections or blocked passages are reducing performance.

If the problem originates in the air circuit, simply replacing the fan with a higher-speed model may not provide the expected improvement.

1.2 Continuous Operation: Power Consumption and Reliability Matter

Some mattress control systems may operate for extended periods. In these applications, engineers should consider input power, operating temperature, bearing design, startup performance and long-term operating stability.

Actual service life should be evaluated under the intended operating conditions rather than inferred from bearing type alone.

1.3 User Comfort: Fan Noise Is Only Part of the Picture

Mattress equipment may be used in bedrooms, care facilities and other noise-sensitive environments. Mechanical fan noise, airflow noise, enclosure resonance and vibration transmitted through mounting structures can all affect the overall user experience.

The rated noise level of an individual fan is therefore only an initial comparison reference. Final noise performance should be verified after installation in the actual equipment.

1.4 Compact Design: Consider More Than the Fan's Dimensions

The internal space of care equipment may also need to accommodate control boards, power supplies, tubing, valves and other components. The space available for a fan can consequently be limited.

When selecting a model, engineers should check its length, width and thickness, as well as mounting-hole positions, inlet clearance, outlet clearance, airflow passages, wiring and connector access.

Key selection principle: Define the fan's function first, establish the required airflow, operating pressure, noise limits and installation space, and then shortlist suitable product series and performance grades.

2. Overview of the Seven JENTECH JB Series Miniature Fans

Dimensions are often the first screening criterion in fan selection, but they should not be the final deciding factor.

The JENTECH JB series includes models ranging from 40 × 40 × 10 mm to 76 × 70 × 20 mm, providing different options for preliminary evaluation under various space and performance requirements.

Seven-Series Specification Overview

Note: These ranges represent different performance grades within each series. They do not mean that one individual model achieves every listed value simultaneously. Refer to the specifications for the exact model for its airflow, static pressure, current, power consumption and noise ratings.

For preliminary selection, the seven series can be grouped according to installation and performance considerations:

• Ultra-thin installation spaces: Compare JB4010-01 and JB5010-01.

• Compact spaces with more performance options: Compare JB4020-01 and JB5015-01.

• Applications requiring evaluation of higher static pressure: Consider JB5215-01.

• Applications requiring higher rated airflow: Compare JB7015-01 and JB7620-01.

These categories are intended for initial screening only. No series should be assumed suitable for a particular medical or care device without evaluating its actual operating point and completing the necessary system tests.

3. JB4010-01: Evaluating the 40 × 40 × 10 mm Ultra-Thin Fan

In compact equipment, the available installation height can be a critical design constraint. The JB4010-01, measuring 40 × 40 × 10 mm, can be considered when evaluating ultra-thin fan solutions.

The series offers 5V, 12V and 24V options, with a rated speed range of 5,800–9,000 RPM and an airflow range of 1.4–2.2 CFM.

The following table shows the 12V models:

What Applications Should Be Evaluated?

The JB4010-01 is worth considering when installation thickness is limited. Its multiple performance grades also allow engineers to compare different airflow, pressure and power requirements.

However, if the fan is intended to supply air directly to inflatable cells, its performance at the required operating pressure must be verified. A small fan is not automatically unsuitable, but its ability to meet the actual system requirements must be demonstrated through testing.

Common mistake: Assuming that a 10 mm-thick fan is always the best option for compact mattress equipment.

Thickness is only one design constraint. If a fan cannot provide the required airflow or pressure, choosing it solely to save space may lead to air-circuit redesign or changes to the overall equipment structure.

Selection recommendation: When installation height is restricted, begin by evaluating the JB4010-01 and determine whether its performance is sufficient at the required operating point.

4. JB4020-01: Why Consider a 20 mm-Thick Fan in the Same 40 mm Size Class?

If the available width and length are limited to a 40 mm fan, but sufficient installation height is available, the JB4020-01 is worth comparing with the JB4010-01.

The JB4020-01 measures 40 × 40 × 20 mm and is available in 5V, 12V and 24V versions. Its rated airflow range is 2.3–4.3 CFM.

The following table shows the 12V models:

Compared with the JB4010-01, the JB4020-01 offers higher rated airflow and static-pressure ranges. However, actual air delivery still depends on the resistance of the connected air circuit.

JB4010 vs. JB4020: How Should You Compare Them?

These are series-level specification comparisons. They do not replace performance-curve analysis under identical operating conditions.

Practical recommendation: If the equipment has limited width but sufficient vertical clearance, evaluate the JB4020-01 alongside the JB4010-01. Testing both candidates is more reliable than making a decision based only on dimensions or rotational speed.

5. JB5010-01: A 50 × 50 × 10 mm Fan for Space-Constrained Designs

The JB5010-01 measures 50 × 50 × 10 mm and is available in 5V, 12V and 24V versions. Its rated airflow range is 1.6–2.7 CFM, while its rated noise range is 27.0–38.6 dBA.

The following table shows the 12V models:

What Should Engineers Check During Selection?

Both the JB5010-01 and JB4010-01 have a thickness of 10 mm, but their length, width and performance characteristics differ. Engineers should therefore consider the complete installation envelope and operating requirements rather than thickness alone.

Voltage compatibility also matters. Even if a device uses a 12V power supply, the control board must provide sufficient current, and the startup requirements and wiring configuration must be checked.

For noise-sensitive equipment, the lowest rated noise figure should not be the only selection criterion. Air-circuit resistance, mounting arrangements and airflow passages can all affect the final result.

Selection recommendation: If installation height is restricted but the equipment can accommodate a 50 mm-class fan, compare the JB5010-01 and JB4010-01 during the same prototype evaluation.

6. JB5015-01: How to Choose Among Multiple Performance Grades

The JB5015-01 is a versatile series measuring 50 × 50 × 15 mm. It is available in 5V, 12V and 24V versions, with a rated airflow range of 1.8–4.5 CFM and a rated static-pressure range of 0.183–1.114 inH₂O.

The following table shows the 12V models:

How Can You Balance Low Noise and Higher Performance?

For noise-sensitive equipment, engineers can begin by evaluating lower performance grades and then verify whether the airflow and pressure meet the design requirements.

If testing shows that a lower grade cannot meet the required operating point, medium or higher grades should be evaluated. Selecting the lowest noise figure without checking airflow can compromise system performance.

Power requirements must also be reviewed when changing performance grades. Upgrading from L to S or U should not be assumed compatible with the existing power supply or control board.

Key selection point: The JB5015-01 offers multiple performance grades for comparison. The final choice should balance actual airflow, static pressure, noise and power consumption.

7. JB5215-01: Evaluating Applications Where Static Pressure Matters

The JB5215-01 measures 52 × 51 × 15 mm and is available in 12V and 24V versions.

Its rated airflow range is 3.6–6.5 CFM, while its rated static-pressure range is 0.570–2.040 inH₂O.

The following table shows the 12V models:

The specifications show that the series offers a relatively high rated static-pressure range, making it a candidate for applications where pressure capability needs careful evaluation.

However, higher static pressure does not automatically mean higher airflow in every air circuit.

For a system with significant resistance, engineers must verify the actual airflow available at the target pressure. If the system has low resistance, selecting a higher-pressure grade may not provide a worthwhile improvement relative to its power and noise characteristics.

The JB5215-01 is also close in size to the JB5015-01, but the two models should not be assumed to be interchangeable. Mounting-hole positions, connections, electrical specifications and performance curves must all be checked.

Selection recommendation: If a smaller fan cannot meet the required operating point, include the JB5215-01 in the comparative test. Evaluate actual operating airflow, noise and power consumption instead of relying solely on the maximum static-pressure figure.

8. JB7015-01: A 70 × 75 × 15 mm Candidate for Higher Airflow Requirements

If the equipment can accommodate a larger fan and the existing compact solution cannot deliver the required airflow, the JB7015-01 is worth considering.

The series measures 70 × 75 × 15 mm and is available in 5V, 12V and 24V versions. Its rated airflow range is 5.1–10.5 CFM.

The following table shows the 12V models:

Compared with the 40 mm and 50 mm-class models discussed above, the JB7015-01 offers a higher rated airflow range while maintaining a thickness of 15 mm.

It can therefore be considered when a design requires more airflow but still needs to control fan thickness.

However, a larger fan also requires a review of the installation envelope, inlet clearance, mounting structure and airflow distribution. Higher airflow may also expose limitations in downstream tubing and valves.

Why Not Simply Replace a Small Fan with a Larger One?

Suppose a device originally uses a 50 mm-class fan. Replacing it with a JB7015-01 may increase the rated airflow, but several issues could arise:

• The existing enclosure may not accommodate the new dimensions.

• The inlet and outlet positions may not align with the existing air passages.

• The power supply and control board may require reassessment.

• Actual airflow may remain limited by downstream valves or tubing.

• Noise and vibration characteristics may change.

A larger fan should therefore be treated as a system-level design change rather than a simple component replacement.

9. JB7620-01: Does a Larger Fan Always Deliver the Best Solution?

The JB7620-01 is one of the higher-airflow options in the seven-series range. It measures 76 × 70 × 20 mm and is available in 12V and 24V versions.

Its rated airflow range is 8.6–11.5 CFM, with a rated static-pressure range of 0.698–1.453 inH₂O.

The following table shows the 12V models:

When Should You Evaluate the JB7620-01?

The JB7620-01 can be considered when a design requires relatively high rated airflow, the available installation space is sufficient, and the power supply meets the requirements.

However, it should not be selected solely because it has a higher airflow rating. If the required airflow is modest or the equipment has strict noise, size or power constraints, a smaller series may be more appropriate.

Most importantly, the rated airflow of the JB7620-01 does not represent the actual airflow delivered through an installed mattress air circuit. Final performance depends on the interaction between the fan and the system resistance.

Selection recommendation: Establish the required airflow and pressure first, then compare the JB7015-01 and JB7620-01 using their performance curves, installation requirements and measured noise levels.

10. Comparing All Seven Series: What Should Engineers Prioritize?

To improve selection efficiency, engineers should narrow the candidate range according to structural constraints and performance targets before comparing individual models.

This table is intended for preliminary screening, not as a ranking of product quality. Suitability depends on the actual operating conditions.

What If the Customer Provides Only the Fan Size?

If a customer simply requests a “50 mm fan,” additional information is needed before recommending a specific model.

Engineers should clarify:

1. Does 50 mm refer to the fan's nominal frame size or the maximum available installation space?

2. What is the maximum allowable thickness?

3. Is the required supply voltage 5V, 12V or 24V?

4. Is the fan intended for equipment cooling or direct air delivery to inflatable cells?

5. What are the target airflow and operating pressure?

6. What are the noise, power and continuous-operation requirements?

With these details, the selection can be narrowed to the JB5010-01, JB5015-01 or another appropriate series.

11. Seven Common Mistakes to Avoid When Selecting a Miniature Fan

Mistake 1: Treating Free-Airflow Ratings as Actual Delivered Airflow

Free-airflow ratings are measured under specified test conditions. Once a fan is connected to tubing, valves or air cells, its actual airflow may change.

Use a fan performance curve, system resistance analysis or direct testing to establish the operating point.

Mistake 2: Comparing Maximum Airflow Without Considering Static Pressure

Two fan series may have different airflow-pressure characteristics. For systems with significant resistance, engineers should evaluate the airflow available at the target pressure rather than focusing only on maximum airflow.

Mistake 3: Evaluating Speed Without Checking Power Consumption

Higher speed often increases the electrical demand, although actual power consumption depends on the product design and operating conditions.

Check rated current, input power and available power-supply capacity to avoid unstable operation or control-board limitations.

Mistake 4: Assuming Fans with the Same Voltage Are Interchangeable

Two 12V models may differ in rated current, startup requirements, wiring, dimensions and performance curves.

Always verify the complete model number and the manufacturer's specifications before replacement.

Mistake 5: Ignoring Noise-Test Conditions

Noise figures should be compared under equivalent test conditions. Differences in the enclosure, airflow passages, mounting method and measurement environment can affect the result.

Whenever possible, evaluate noise after installation in the actual equipment.

Mistake 6: Assuming Double Ball Bearings Guarantee a Specific Service Life

Bearing design is one factor in reliability assessment. Actual service life is also affected by temperature, installation orientation, vibration, load and operating conditions.

For equipment intended for continuous operation, conduct reliability testing under the target conditions and refer to the manufacturer's published service-life data.

Mistake 7: Overlooking the Requirements for Medical and Care Equipment

A fan is only one component of a complete device. A particular material rating or fan specification does not establish that the finished equipment complies with all applicable medical-device regulations or standards.

Equipment manufacturers must evaluate the intended use, target-market regulations, risk-management requirements and applicable verification tests.

12. From Airflow to Operating Point: How Can Engineers Calculate and Verify Performance?

A practical selection workflow consists of four stages: estimating requirements, screening fan series, verifying the operating point and testing the installed system.

12.1 Estimate the Required Airflow

If the required air volume and target delivery time are known, the ideal average airflow can be estimated as follows:

Average airflow = Required air volume ÷ Target delivery time

For example, if a design must deliver a specified volume of air within a defined period, this relationship provides an initial estimate of the required average flow rate.

However, pressure may change during inflation, and the system may experience tubing losses, valve resistance and leakage. The calculation is therefore only an initial estimate, not a final fan-selection value.

12.2 Evaluate Airflow Together with Operating Pressure

The next step is to determine the required airflow at the target operating pressure.

For systems with significant air-circuit resistance, obtain the fan's pressure-flow (P-Q) performance curve and compare it with the system resistance curve.

If a complete performance curve is unavailable, a prototype test rig can be used to measure actual airflow and pressure under different resistance conditions.

12.3 Test Noise and Power Consumption

After preliminary airflow testing, record the following parameters under consistent conditions:

• Actual operating voltage and current.

• Input power and power-supply temperature rise.

• Airflow and pressure at the target operating point.

• Overall equipment noise.

• Startup, shutdown and speed-control performance.

• Temperature rise and operating stability during continuous testing.

Using consistent test conditions makes comparisons between candidate models more meaningful.

12.4 Maintain Repeatable Selection Records

Record the model number, test conditions, airflow, pressure, noise and power consumption in a common test report.

This documentation helps engineering teams during prototype selection and supports subsequent purchasing, replacement, design changes and production quality management.

13. General JB Series Specifications: Materials, Bearings and Temperature Range

According to the available product information, the JB series has the following general specifications:

The L, M, H, S and U suffixes indicate performance grades from lower to higher. However, the same grade designation across different series should not be interpreted as identical speed, airflow, static pressure or power consumption.

In addition, component material ratings, operating-temperature ranges and bearing types are product specifications. They should not be interpreted as proof of medical-device certification, a guaranteed service life or complete system safety.

For care equipment intended for extended operation, verify the product specifications and conduct further evaluation under the actual ambient temperature, mounting conditions and duty cycle.

14. Frequently Asked Questions About Fan Selection for Anti-Decubitus Mattresses

Q1. What size fan should be used in an electric anti-decubitus mattress?

There is no single size suitable for every mattress. Start by identifying the fan's function, available installation space, target airflow and operating pressure. Then shortlist the appropriate series.

Q2. Which is better: the JB4010-01 or the JB4020-01?

One of the main differences is thickness: 10 mm for the JB4010-01 and 20 mm for the JB4020-01. Their performance specifications also differ.

If installation height is restricted, evaluate the JB4010-01 first. If more space is available, include the JB4020-01 in the comparison. The final decision should be based on the actual operating point, noise and power consumption.

Q3. Can the JB5010-01 directly replace the JB5015-01?

Not necessarily. Their thickness differs, and the electrical and performance specifications of the exact models must be checked. Mounting arrangements, wiring and actual airflow performance must also be verified.

Q4. Is the JB5215-01 always a better choice when higher static pressure is needed?

No. Maximum static pressure alone is insufficient for selection. Compare the actual airflow at the target pressure, together with noise and power consumption, and confirm that the fan meets the system requirements.

Q5. How should the JB7015-01 and JB7620-01 be compared?

Both can be evaluated when higher airflow is required. The JB7015-01 measures 70 × 75 × 15 mm, while the JB7620-01 measures 76 × 70 × 20 mm.

Compare their performance curves, installation requirements, noise and power consumption before making a decision.

Q6. Does a higher rated airflow always mean faster air-cell inflation?

No. Actual inflation speed also depends on operating pressure, air-cell volume, valve resistance, tubing design and leakage. The complete system must be evaluated.

Q7. Can the JB series be used directly in medical devices?

Suitability depends on the device design, intended use, applicable regulations and system-level verification results. Fan specifications alone cannot establish compliance with all requirements for a particular medical device.

Q8. How can I quickly identify suitable candidate models?

Prepare the installation dimensions, supply voltage, target airflow, operating pressure, noise requirements and operating conditions. These details make it easier to narrow the candidate list using the product specifications.

15. Conclusion: Select the Right Operating Point, Not Just the Fan Size

From the JB4010-01, JB4020-01, JB5010-01 and JB5015-01 to the JB5215-01, JB7015-01 and JB7620-01, the JENTECH JB series provides multiple sizes, voltage options and performance grades for engineering evaluation.

For ventilation and air-delivery applications in electric anti-decubitus mattresses, the best choice is not necessarily the largest fan or the highest-speed model. The key is whether the fan can deliver the required airflow at the actual operating pressure while meeting the equipment's noise, power, structural and reliability requirements.

Define the requirements before selection, verify the performance curve during selection, and validate the complete system through testing. This approach helps reduce unnecessary prototype iterations, avoid unsuitable replacements and improve engineering efficiency.

Shenzhen JENTECH Electronics Co., Ltd. offers fan products in multiple sizes, voltage options and performance grades to support product selection according to equipment structure and performance requirements.

If you are developing electric anti-decubitus mattresses, alternating-pressure mattresses or other care equipment, provide the installation dimensions, supply voltage, target airflow and operating pressure to help identify suitable candidate models.

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