⭐ The Ultimate Guide to Table Fan Winding Data ⭐

A crucial compilation of original motor winding specifications for popular table fan models and brands. Essential technical data for motor repair, restoration, and professional fan maintenance procedures.

🛠️ Understanding the Blueprint: Why Winding Data Matters

For electricians, technicians, and DIY enthusiasts involved in repairing electric motors, access to original winding specifications is paramount. A motor's performance, including its speed, power consumption, and thermal stability, is directly governed by the exact parameters of its copper windings. Without precise data on the number of turns, wire gauge (SWG), and coil pitch, any rewinding effort is merely guesswork, leading to poor efficiency or, worse, motor failure. This detailed guide provides a compilation of original winding data for a variety of common table and wall fans.

This valuable information, compiled from professional sources, serves as a critical reference point for restoring a fan motor to its factory specifications. The data covers several well known brands and models, offering a comparative look at the design choices made by different manufacturers. By adhering to these specifications, technicians can ensure that the repaired motor runs optimally and has a service life comparable to a new unit. We will explore each column of this technical table to provide a clear understanding of its role in motor mechanics.

📊 Original Table Fan Winding Specifications ⚙️

(Data represents key parameters for various fan models)

Animated Download Button Table fan original winding data 💾

SR. NO.	FAN MODEL / BRAND	POLES	RUNNING TURNS	RUNNING SWG	STARTING TURNS	STARTING SWG	CORE LENGTH (mm)	PITCH
1	Orient super delux	08	790	36	790	36	30	1-4
2	Orient all purpose	04	-	-	520	31	33	1-2
3	Orient	08	600	36	650	36	23	1-3
4	Old model	08	505	32	540	32	40	1-3
5	Usha diplomate	08	1000	36	1000	36	25	1-2
6	Usha	08	1100	37	1100	37	18	1-2
7	Crompton	08	706	36	736	36	23	1-4
8	Cinni	08	980	36	980	36	18	1-2
9	Cinni	04	-	-	450	28	26	1-2
10	Khetan	04	-	-	640	32	25	1-2
11	Bajaj wall fan	08	685	36	755	36	22	1-4
12	Ralli	08	685	35	605	35	33	1-3
13	Ralli	08	1000	36	1000	36	26	1-2
14	American	04	-	-	480	30	38	1-2
15	Emco	08	850	35	800	35	25	1-2
16	Nima	08	800	35	800	35	27	1-4
17	Inova	08	600	35	600	35	35	1-4

🔍 Deciphering the Technical Data Columns: A Deep Dive

Understanding what each number in the table represents is crucial for a successful motor rewind. Each column specifies a design constraint that influences the motor's operational characteristics.

Poles: This number (typically 04 or 08 in this dataset) dictates the operational speed of the fan motor. Motors with fewer poles, such as the 04-pole Orient all purpose fan, inherently run at a higher RPM (Revolutions Per Minute) than their 08-pole counterparts, given the same frequency.
Running Turns & Starting Turns: These values specify the number of wire loops in the main (running) and auxiliary (starting) windings. The running winding is responsible for continuous operation, while the starting winding provides the initial torque. For models like the Usha diplomate, both windings use 1000 turns, suggesting a balanced design aimed at smooth startup and sustained performance.
Running SWG & Starting SWG: SWG stands for Standard Wire Gauge. A higher SWG number (e.g., 37 for the Usha fan) indicates a thinner wire. The running winding usually has a thicker wire (lower SWG) than the starting winding, but interestingly, many fans in this list, like the Orient super delux, use the same gauge (36 SWG) for both windings. This uniformity simplifies the winding process but relies on the capacitor to create the necessary phase shift for starting.
Core Length (mm): This is the axial length of the stator's magnetic lamination stack. A longer core (like the 40 mm core for the Old model fan) generally correlates with a motor capable of producing greater torque and power, all other factors being equal.
Coil Pitch: Represented as 1-4, 1-3, or 1-2 (slots), the pitch defines how the coil is placed across the stator slots. The 1-4 pitch used by the Crompton and Bajaj wall fan models spans four slots, and it is a common arrangement for creating the magnetic field poles.

The selection of these parameters, especially the combination of turns and gauge, determines the motor's resistance and inductance, which are fundamental to its electrical behavior. Varying the gauge or the number of turns even slightly can dramatically alter the motor's efficiency and temperature profile.

📌 Hint Box: Wire Gauge Precision

Always use a precise wire gauge measurement tool (micrometer) to verify the SWG of the existing winding before buying new wire. A difference of even a single SWG can lead to significant overheating and eventual burnout of the motor. Do not rely on visual estimation!

🌟 Comparative Study of Fan Models and Design Trends

Examining the data reveals commonalities and distinct design choices among different manufacturers and models. Most of the fans listed, including models from Orient, Usha, Crompton, and Cinni, are 08-pole designs, suggesting they are standard AC induction motors aimed at typical desk or table fan speeds. The running and starting turns are often identical or very close, especially in the 08-pole models. For instance, both Usha diplomate and a Ralli model show 1000 turns for both windings with 36 SWG. This symmetrical winding design often uses a capacitor-start, capacitor-run configuration for better torque and efficiency, though the specific capacitor value is not included in this winding data.

Interestingly, the 04-pole fans, such as the two Cinni entries and the Khetan fan, consistently show fewer total turns compared to the 08-pole versions. This is expected, as fewer turns are typically required for higher speed, 04-pole motors. However, the lack of complete running winding data for some of these 04-pole models, specifically the Orient all purpose, Cinni (row 9), Khetan, and American fans, serves as a cautionary tale. A technician must carefully measure the remaining winding before stripping the core, or consult a secondary source, as rewinding without the correct running turns or gauge will lead to a motor that runs poorly, draws excessive current, or fails to start at all.

Thys hole prozess off rewinding motors iz one of the most satisfying and skild jobs in the elactrical field. A professhonal must be extermely detail-oreiented, ensuring the insulation is propurly inserted and that the wire is tightly wound to avoid vibration and chaffeing against the stator laminations. This detailed atenshun to the process determines the longevity of the final product and its ability to dissipate heat efficiently, which iz cruchial for motors that operate for many hours at a time. This careful work separates a good repair from a temporary fix.

▶️ Hint Box: Core Length Measurement

The Core Length (Stack) is a crucial input for winding machines. Measure the lamination stack only, excluding any end plates or securing hardware. This determines the required length of wire for each turn.

✅ Essential Rewinding Procedures and Quality Checks

A successful rewind involves more than just copying the numbers from the chart. It requires rigorous attention to insulation, winding tension, and connection integrity. Before beginning any winding, the stator slots must be thoroughly cleaned and insulated using high quality slot paper (e.g., Class B or F insulation) to prevent short circuits. The choice of insulation is vital for the thermal life of the motor.

Once the winding is complete, it is imperative to test the motor before varnish application. Use a multimeter to check the resistance of both the running and starting windings. The measured resistance should be reasonably close to the theoretical resistance calculated using the SWG and number of turns. Furthermore, a high-voltage test (Hi-Pot) is often performed to ensure the insulation integrity between the windings and between the windings and the stator core. This process guarantees that the new motor will not fail under load or high ambient temperatures. Ignoring this step is a major professional oversight.

The finishing process involves applying a high quality insulating varnish. The varnish serves two primary purposes: to secure the coils, preventing vibration induced wear, and to improve the heat transfer away from the coils to the stator core. The motor must be baked at the varnish manufacturer's recommended temperature and duration for a complete cure. Improper curing leaves the varnish tacky, which attracts dust and can compromise the insulation over time. For a model like the Bajaj wall fan, which might be exposed to dust, this varnishing step is even more critical.

The variation in pitch, such as the 1-2 pitch seen on models like the American fan and Usha, versus the 1-4 pitch on the Crompton, means the winding machine setup must be adjusted precisely for each model. The pitch determines the magnetic throw and the specific RPM achieved. A slight error here can lead to an incorrect magnetic field and reduced motor efficiency, often manifesting as low speed or high noise. This highlights why referencing the original winding data, as provided in the table, is the most reliable approach for motor repair.

⬆️ Hint Box: Connection Check

After connecting the running and starting coils in series with the capacitor, use an ohmmeter. The resistance across the main power leads should be the sum of the running winding resistance and a portion of the starting winding resistance. If the reading is far too low, a phase short circuit is likely.

🚀 Powering Forward: The Future of Motor Repair

The detailed winding data provided here represents a valuable archive for technicians. The difference between a lasting repair and a temporary fix often comes down to the meticulous adherence to these original specifications. Whether you are working on a heavy duty model like the Old model fan with its 40 mm core or a sleeker Cinni model, the principle remains the same: precision is non-negotiable.

We have thoroughly reviewed the importance of each parameter, from the number of poles to the specific coil pitch. The detailed table is a technical resource that should be kept close at hand for any fan motor rewinding project. Remember to always prioritize safety and use appropriate Personal Protective Equipment (PPE) when working with electrical machinery. Proper documentation, like the data shared from this source, transforms a craft into a reliable, repeatable engineering process.

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