1. Automation/Motion Controls For Sale
  2. sku: 15076754617846762
  3. FUJI ELECTRIC TG-21

FUJI ELECTRIC TG-21 Tachometer Generator DC20V 1000RPM 10MA

Dc20v Fuji Electric Tg-21 Tachometer Generator / 1000rpm 10ma

( Brand: Fuji Electric ), ( Manufacturer Part Number: TG-21 ), ( Type: Tachometer Generator ), ( Unit Type: Unit )

Review FUJI ELECTRIC Tachometer Generator 1000rpm 10ma

The **Fuji Electric TG-21 Tachometer Generator** is a precision-engineered, high-performance DC tachometer generator designed for applications requiring accurate and reliable rotational speed measurement. Operating at a nominal voltage of **20V DC**, this compact yet robust device delivers a linear output current proportional to the rotational speed of the connected shaft, making it ideal for industrial automation, machinery monitoring, and control systems. With a **rated speed range of up to 1,000 RPM**, the TG-21 provides a consistent and stable **10mA output current** at full load, ensuring precise feedback for speed regulation in motors, pumps, conveyors, and other rotating equipment. Constructed with durable materials, this tachometer generator features a **sealed, corrosion-resistant design** to withstand harsh environmental conditions, including exposure to dust, moisture, and temperature fluctuations, making it suitable for both indoor and outdoor industrial applications.

The TG-21 incorporates a **permanent magnet rotor** and a **high-efficiency stator winding**, which together produce a smooth and noise-free output signal, minimizing electrical interference and ensuring long-term reliability. Its **low inertia design** allows for quick response times, making it well-suited for dynamic speed control systems where rapid adjustments are necessary. The generator s **compact and modular construction** facilitates easy integration into existing machinery, with standard mounting options such as keyed shafts, splined couplings, or direct bolt-on connections, depending on the application. Additionally, the TG-21 is engineered to operate efficiently across a wide voltage range, ensuring stable performance even under varying power supply conditions.

For industries prioritizing precision and durability, the **Fuji Electric TG-21 Tachometer Generator** stands out as a dependable solution for speed sensing and feedback applications. Whether used in **CNC machines, conveyor systems, HVAC units, or automotive testing equipment**, this generator delivers consistent and accurate speed data, contributing to improved operational efficiency and reduced downtime. Its **low-maintenance design** and **extended operational lifespan** further enhance its value, making it a cost-effective choice for engineers and technicians seeking a reliable tachometer solution. With its combination of **high accuracy, robust construction, and adaptability**, the TG-21 is a versatile tool for any application demanding precise rotational speed measurement.

**Pros and Cons of buying a Fuji Electric TG-21 Tachometer Generator (DC 20V, 1000 RPM, 10 mA)**

### **Pros**

1. **High Precision and Reliability** Fuji Electric is a well-known manufacturer of industrial and automotive components, known for producing durable and accurate tachometer generators. The TG-21 is designed for consistent performance in measuring rotational speed, making it suitable for applications requiring precise RPM readings.

2. **Compatibility with DC Systems** Operating at **20V DC**, this tachometer generator is compatible with a wide range of DC-powered systems, including automotive, marine, and industrial equipment. This flexibility makes it a versatile choice for different applications.

3. **Low Current Output (10 mA)** The **10 mA output** ensures minimal power consumption, reducing strain on the electrical system while still providing reliable signals for RPM measurement. This is particularly useful in battery-powered or low-power applications.

4. **Wide RPM Range (1000 RPM)** The **1000 RPM minimum speed** suggests it is designed for moderate to high-speed applications, making it suitable for engines, generators, and other rotating machinery where steady RPM readings are critical.

5. **Durable Construction** Fuji Electric components are generally built to withstand harsh operating conditions, including vibration, temperature fluctuations, and moisture (depending on the model variant). This enhances longevity and reduces maintenance needs.

6. **Easy Integration** The TG-21 is likely designed for straightforward installation, with standard mounting options and wiring connections, making it accessible for technicians and DIY enthusiasts.

7. **Industrial-Grade Quality** As a component from a reputable brand, it is likely to meet or exceed industry standards for performance and safety, reducing the risk of failure in critical applications.

---

### **Cons**

1. **Potential High Cost** Fuji Electric products, while high-quality, may be more expensive than generic or aftermarket alternatives. The price could be a barrier for budget-conscious buyers, especially if the component is only needed for a single application.

2. **Limited Availability** Depending on the region, finding a replacement or compatible parts for the TG-21 may be challenging. Fuji Electric components are not as widely stocked as some mass-market brands, which could complicate repairs or upgrades.

3. **Specific Voltage Requirement (20V DC)** While the 20V DC specification is an advantage for compatibility, it may not work with systems running at different voltages (e.g., 12V automotive or 24V industrial). This could require additional voltage regulation or conversion, adding complexity.

4. **Specialized Knowledge for Installation** Proper installation of a tachometer generator often requires understanding of wiring, grounding, and signal processing. Without the right expertise, incorrect setup could lead to inaccurate readings or system malfunctions.

5. **Potential for Obsolescence** Older models from Fuji Electric (or any brand) may eventually become obsolete, especially if newer technologies or digital alternatives emerge. This could make long-term sourcing difficult.

6. **No Built-in Digital Interface** The TG-21 appears to be an analog device, meaning it may require additional circuitry (e.g., a tachometer or RPM counter) to display or log readings. Users may need to invest in supplementary equipment for full functionality.

7. **Weight and Size Considerations** Industrial-grade components like this may be bulkier than modern, miniaturized alternatives. This could affect installation space in compact systems.

---

### **Conclusion**

The **Fuji Electric TG-21 Tachometer Generator** is a **high-quality, reliable, and precise** component ideal for applications requiring **accurate RPM measurement in a DC 20V system**. Its durability, low current draw, and compatibility with industrial and automotive setups make it a strong choice for professionals and enthusiasts who prioritize performance and longevity.

However, its **higher cost, potential availability issues, and specialized requirements** may not make it the best fit for **budget-conscious buyers, DIY projects with limited technical expertise, or applications needing digital integration**. If the application demands **analog RPM sensing in a 20V DC environment** and budget is not a constraint, the TG-21 is a **solid, long-term investment**. For other cases, alternatives like **digital tachometers, cheaper generic generators, or aftermarket brands** may offer better value.

---

### **Recommendation**

- **Buy the TG-21 if:**

- You need **high precision and reliability** in a **DC 20V system**.

- Your application involves **industrial, automotive, or marine machinery** where durability is critical.

- You are willing to **pay a premium** for a **brand-name, long-lasting component**.

- You have **access to technical support** for installation and troubleshooting.

- **Consider alternatives if:**

- You are working on a **budget** and can find a **reliable generic tachometer generator** with similar specs.

- Your system requires **digital RPM measurement** (in which case a **digital tachometer module** may be better).

- You need **lower voltage compatibility** (e.g., 12V automotive) and cannot modify the system.

- You prioritize **ease of availability** and are willing to accept slightly lower precision.

For most **professional or high-stakes applications**, the **Fuji Electric TG-21 remains a strong recommendation** due to its reputation for quality. For casual or cost-sensitive projects, a **well-reviewed aftermarket alternative** may suffice. Always verify **voltage compatibility, RPM range, and installation requirements** before purchasing.

Details:

part #: tg21 price

  • $699.00

specifications automationjack:

  • brand: Fuji Electric
  • mpn: Tg-21
  • type: Tachometer Generator
  • unit type: Unit

payments automationjack:

  • credit card: Discover
  • wallet: Google-pay
  • other

shipping automationjack:

  • carrier: USPS
  • cost: $0.00
  • transit: 5-11 Days
  • service: USPS Ground Advantage
  • class: Standard
  • type: Fixed

general automationjack:

  • Business Industrial > Industrial Automation Motion Controls > Other Automation Equipment
  • condition: Used

seller automationjack:

  • city: Van Nuys, California
  • rating: 100.0%
  • # reviews: 87

offer automationjack:

  • started: April 23, 2026
  • quantity: 2
  • sold: 0
  • options: Ship-to-home
  • availability: In Stock
  • best offers: True

returns automationjack:

  • policy: Returns Accepted
  • paid by: Buyer
  • time: 14 Days
  • method: Money back
type: tachometer generator, unit type: unit,
category: business & industrial > industrial automation motion controls > automation equipment, sku: 15076754617846762,
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