This article's table of contents introduction:
- The "5-12" Code: Likely Interpretation
- Application: Industrial Dust Collector & Filtration
- Key Performance Characteristics (Typical for this class)
- Common Physical Features of a "5-12 Series"
- Where to Find or Order This Specific Fan
- Critical Considerations Before Buying a Replacement
- Summary Recommendation
This is a very specific and technical request. It sounds like you are looking for information, specifications, or a confirmation about a 5-12 Series Centrifugal Flow Fan used for Industrial Dust Collection and Filtration.
Since "5-12 Series" is not a universal standard (manufacturers each have their own numbering like 5-12 or 5/12), I will provide you with the general technical profile and key characteristics of a fan that fits this description, along with advice on sourcing the correct one.
Here is the breakdown of what a 5-12 Series Centrifugal Fan typically means in the context of dust collection:
The "5-12" Code: Likely Interpretation
In industrial fan naming conventions (especially older or Chinese standards), the numbers often refer to the blade geometry and pressure coefficient:
- 5: Refers to the blade outlet angle or a specific design series. It typically indicates a forward-curved or radial-tipped blade design.
- 12: This usually refers to the specific speed of the impeller or the pressure coefficient. For a dust collector, this suggests a medium to high pressure design.
Important Distinction:
- If "5-12" is a Manufacturer's Model: It is likely a heavy-duty radial blade fan (like a Chicago Blower or New York Blower equivalent).
- If "5-12" is a Size Code: It could mean a 12-inch inlet or outlet with a specific wheel size.
Application: Industrial Dust Collector & Filtration
This fan is the "heart" of a dust collection system. Its job is to:
- Create negative pressure (vacuum) to pull dust-laden air from hoods or machines.
- Overcome the resistance (pressure drop) of ductwork, filters, and cyclone separators.
- Handle particulate matter (wood dust, metal filings, chemical powder, cement).
Key Performance Characteristics (Typical for this class)
| Feature | Specification |
|---|---|
| Airflow | Typically 1,000 – 10,000 CFM (depending on wheel diameter) |
| Static Pressure | 6" – 20" W.G. (Water Gauge) or higher. (e.g., 1500 – 5000 Pa) |
| Blade Design | Radial or Radial Tip. These are "material-handling" blades. They are less efficient than airfoil blades, but they are tough, non-clogging, and wear-resistant. |
| Housing | Scroll housing made of heavy-gauge steel. May have a liner (AR 200 or 400 steel) for abrasive dust (sand, shot blasting). |
| Mounting | Direct drive (motor mounted on fan shaft) or Belt drive (allows speed adjustment for tuning airflow/pressure). |
Common Physical Features of a "5-12 Series"
- Inlet: Single width, single inlet (SWSI) or double width, double inlet (DWDI).
- Outlet: Square or round, flanged or slip-fit.
- Wheel: Open type (paddle wheel) for handling sticky or fibrous dust; or Shrouded radial tip for heavier dust.
- Shaft: Oversized shaft for heavy loads, mounted on ball or roller bearings.
Where to Find or Order This Specific Fan
Because "5-12" is not a global standard, you need to identify the original manufacturer or a compatible replacement.
Check these manufacturers (commonly use similar numbering):
- Chicago Blower / New York Blower (USA) – They use model numbers like "5-12" or "Series 5-12".
- Greenheck – Has series like "Fans such as BIDW or tubular centrifugal".
- Loren Cook / Twin City Fan – Look for their "Radial" or "Material Handling" catalogs.
- Ziehl-Abegg / Nicotra Gebhardt (European) – Different numbering.
- Chinese Manufacturers (e.g., 4-72, 4-79, 5-12) – The "5-12" is VERY common in Chinese HVAC and industrial catalogs (often called the 5-12 series high pressure centrifugal fan).
Critical Considerations Before Buying a Replacement
If you are replacing a failed 5-12 fan, do NOT just buy "another 5-12". You must match these parameters exactly:
- Pulley RPM Ratio (if belt drive): The fan curve is highly sensitive to speed.
- Wheel Diameter (Impeller OD): The most critical dimension (e.g., 12", 18", 24").
- Inlet Diameter: Must match your ductwork.
- Motor HP: The fan is designed for a specific horsepower range (e.g., 3 HP, 5 HP).
- Material of Construction: For corrosion (stainless steel) or heat (up to 500°F+).
Summary Recommendation
A 5-12 Series Industrial Centrifugal Fan is a medium-to-high pressure, heavy-duty material handling fan. It is excellent for dust collectors because its robust radial blade design resists clogging and wear from abrasive particles.
Next Step: To get the exact specifications, look for a nameplate on the existing fan. It will state:
- Model: (e.g., 5-12 No. 8.0, or 5-12-18)
- RPM: (e.g., 1450, 1700, 2800)
- Serial Number
If you are designing a new system, you need to calculate your system's Total Static Pressure (TSP). A typical 5-12 fan can handle 12" to 18" of static pressure.
