Understanding SXDOOL Fan Part Numbers: A Technical Guide

How to Read SXDOOL Product Part Numbers and Nomenclature

For procurement managers and thermal engineers, the part number is more than just a label—it is a concentrated data sheet. In the world of industrial cooling fans, standardized nomenclature ensures that the correct specification is ordered, delivered, and integrated into the final product. SXDOOL has developed a logical, alphanumeric system that conveys critical specifications at a glance. Decoding this system is the first step toward streamlining your supply chain and ensuring thermal management success. This guide provides a technical breakdown of SXDOOL’s part numbering system, covering axial fans, blowers, and EC/AC variants.

The Anatomy of an SXDOOL Part Number

An SXDOOL part number typically follows a standard sequence: [Series Prefix] [Dimensions] [Voltage] [Bearing Type] [Speed Level] [Function/Connector]. For example, consider the model SX12038D24B-HH7-PWM. Let’s break down each segment to understand the underlying technical specifications.

1. The Series Prefix (SX / SD)

The prefix generally identifies the fan type and product line. SX typically denotes our standard industrial axial fans, while SD is often used for our DC centrifugal blowers. This prefix ensures that you are looking at the correct category of thermal solution before diving into the specific dimensions.

2. Physical Dimensions (e.g., 12038)

Dimensions are critical for mechanical integration. Our system uses a five-digit code to represent the width and depth in millimeters.

• 120: Represents a 120mm x 120mm frame.
• 38: Represents the depth or thickness (38mm).

Common dimension codes include 4010 (40x40x10mm), 8025 (80x80x25mm), and 12025 (120x120x25mm). For engineers designing compact server chassis or large industrial cabinets, this is the most critical starting point.

3. Input Voltage (e.g., D24)

This segment identifies the required power source.

• D12 / D24 / D48: Indicates Direct Current (DC) at 12V, 24V, or 48V.
• A11 / A22: Indicates Alternating Current (AC) at 110V or 220V.
• E22: Indicates high-efficiency EC (Electronically Commutated) fans operating on 220V AC but using a DC motor.

4. Bearing System (e.g., B)

At SXDOOL, the bearing is the heart of the fan's reliability.

• B: Dual Ball Bearing (specifically Japanese NMB). This is the standard for our 70,000-hour life-rated fans.
• S: Sleeve Bearing. A more economical choice for consumer-grade applications with lower duty cycles.
• H: Hydraulic Bearing. A middle ground providing better life than sleeve bearings with improved acoustic performance.

5. Speed Level (e.g., HH)

Fans are often available in several speed tiers for the same physical frame.

• VH: Very High Speed (Maximum CFM).
• HH: Super High Speed.
• H: High Speed.
• M: Medium Speed.
• L: Low Speed.

Each tier offers a different trade-off between airflow, static pressure, and power consumption.

6. Functionality and Connector Codes (e.g., PWM)

The final segment of the part number specifies the electrical interface and advanced features:

• PWM: Pulse Width Modulation for precise speed control.
• FG: Frequency Generator (Tachometer output) for speed monitoring.
• RD: Rotation Detector (Alarm) to notify the system if the fan stops.
• IP68: Indicates the fan has received a vacuum-sealed coating for waterproof and dustproof operation.
• 2W / 3W / 4W: Indicates the number of lead wires (2-wire, 3-wire, 4-wire).

The Reliability Factor: NMB and UL94V-0

While not always in the base part number, SXDOOL’s premium specs are inherent to our manufacturing standards. When you see a "B" for bearing, you are receiving an NMB dual ball bearing assembly. When you specify a fan from our factory, the housing and impeller are guaranteed to be UL94V-0 rated PBT, ensuring maximum safety in electronic enclosures. These are the technical baselines that allow us to provide a 70,000-hour lifespan across our industrial range.

Why Accurate Nomenclature Matters for B2B Procurement

Using the correct nomenclature reduces lead times. As an ISO9001 certified factory in Guangzhou, SXDOOL can turn around custom OEM/ODM orders in 7-15 days, provided the specifications are clear. With a minimum order quantity (MOQ) of just 100 pieces, mid-sized engineering firms can benefit from the same level of technical precision as global enterprises. An accurate part number ensures that the samples you approve in the prototyping phase are identical to the bulk production units delivered to your factory.

Conclusion: Streamlining Your Specification Process

Mastering the SXDOOL nomenclature allows your engineering team to communicate more effectively with our factory. It eliminates ambiguity in the RFQ process and ensures that the fan integrated into your product will perform exactly as designed. Whether you need a 120mm PWM-controlled 48V fan with NMB bearings for a telecom base station or a compact 40mm blower for a 3D printer, our part numbers provide the roadmap to the perfect thermal solution.

Contact SXDOOL's engineering team at david@sxdool.com for bespoke thermal solutions and OEM bulk pricing. Visit www.sxdool.com