HEIDENHAIN 680985-01 Heindenhain Linear Position Sensor Encoder 680-985-01

( Brand: Heidenhain ), ( Manufacturer Part Number: 680985-01 ), ( Model: AT3018 ), ( Part Type: Linear Sensor ), ( Country Of Origin: Germany )

Review HEIDENHAIN Heindenhain At Linear Position Sensor Encoder

The **Heidenhain 680985-01 (3018 Series) Linear Position Sensor Encoder** is a high-precision, robust, and versatile incremental encoder designed for demanding industrial applications requiring exceptional accuracy, reliability, and durability. Part of Heidenhain s renowned 3018 series, this linear encoder is engineered to deliver sub-micron resolution and repeatability, making it an ideal choice for advanced machining centers, CNC systems, robotics, and automated manufacturing processes where positional feedback is critical. The 680985-01 features a **high-resolution incremental output** with a standard resolution of **1 m (1 micron)** per count, configurable through the encoder s internal settings, ensuring fine-tuned control over linear motion with minimal backlash or drift. Its **absolute position capability** (via optional memory backup) eliminates the need for homing routines, significantly reducing setup time and enhancing operational efficiency.

Constructed with **industrial-grade materials**, the 680985-01 is built to withstand harsh environments, including exposure to dust, moisture, and temperature fluctuations, thanks to its **IP67-rated housing** and sealed scale. The encoder employs a **high-precision glass scale** with a **chromium-coated measuring strip**, ensuring long-term stability and resistance to wear, while its **magnetic or optical readhead** (depending on the application) provides consistent, interference-free signal detection. The readhead s **dual-channel incremental output** (A/B phase signals) enables bidirectional motion tracking, while an optional **index pulse** (Z-phase) allows for precise synchronization with external systems. For enhanced safety and redundancy, the encoder supports **quadrature counting** and **multi-turn counting**, preventing position loss during power interruptions or scale misalignment.

The **Heidenhain 680985-01** integrates seamlessly with CNC controllers, PLCs, and motion control systems through its **RS-422 or PROFIBUS DP interface**, enabling real-time communication with minimal latency. Its **Heidenhain-specific communication protocol** ensures compatibility with a wide range of industrial automation platforms, while the **optional analog output** (e.g., 0 10 V or 4 20 mA) provides additional flexibility for legacy systems or hybrid control architectures. The encoder s **compact yet rugged design** allows for easy installation on linear guides, slides, or gantry systems, with mounting options including **flange, rail, or direct scale attachment**, accommodating a variety of application constraints. Whether deployed in **high-speed machining, precision metrology, or automated assembly lines**, the 680985-01 delivers unmatched positional accuracy, operational reliability, and long-term cost efficiency, reinforcing Heidenhain s reputation for excellence in industrial measurement technology.

### **Heidenhain 680985-01 (3018 Linear Position Sensor) Pros and Cons**

1. **High Precision and Reliability** Heidenhain is a well-known brand in industrial measurement technology, offering high-accuracy linear encoders with minimal drift over time. The 3018 model is designed for precise positioning in CNC machines, robotics, and automation systems.

2. **Durability and Long Lifespan** Built with robust construction, these encoders are resistant to dust, moisture, and mechanical stress, making them suitable for harsh industrial environments. They are designed for continuous operation with low maintenance requirements.

3. **High Resolution** The 3018 series typically offers high-resolution feedback (often in the micrometer range), ensuring fine control in machining and automation applications.

4. **Compatibility with Heidenhain Systems** If your machine already uses Heidenhain controllers (e.g., TNC, ITNC), this encoder integrates seamlessly, reducing compatibility issues and simplifying setup.

5. **Sturdy Mounting Options** Available in various mounting styles (e.g., flange, rail, or direct shaft attachment), allowing flexibility in installation depending on the application.

6. **Good Signal Stability** Heidenhain encoders are known for stable analog and digital signals, reducing errors in position feedback.

7. **After-Sales Support and Availability of Parts** Heidenhain has a strong global support network, making it easier to find replacement parts, calibration services, or technical assistance if needed.

8. **Wide Industrial Application Range** Suitable for milling machines, lathes, grinding machines, and robotic systems where precise linear measurement is critical.

---

1. **High Cost** Heidenhain encoders are premium products, often significantly more expensive than generic or lower-end brands. The price can be a barrier for small workshops or budget-conscious buyers.

2. **Potential Overkill for Basic Applications** If the application does not require sub-micron precision (e.g., simple milling or light-duty automation), a more affordable encoder (e.g., Renishaw, Siemens, or even some Chinese brands) may suffice.

3. **Limited Customization** Unlike some competitors, Heidenhain offers fewer customization options in terms of resolution, interface types, or physical dimensions, which may restrict flexibility in certain setups.

4. **Dependence on Heidenhain Ecosystem** If your system relies on Heidenhain controllers, switching to a different brand (e.g., Fanuc, Mazak) may require additional compatibility work. Conversely, if you re moving away from Heidenhain, this encoder may not integrate as smoothly.

5. **Longer Lead Times for Replacements** While Heidenhain parts are reliable, replacement units or calibration services may have longer lead times compared to more widely available brands.

6. **Complex Installation for Non-Experts** Due to their precision nature, installation (e.g., alignment, calibration) may require specialized knowledge, potentially increasing labor costs if done in-house.

7. **Potential for Obsolescence** While Heidenhain is a legacy brand, newer CNC systems increasingly favor digital interfaces (e.g., Ethernet, Profibus) over traditional analog outputs. Some older models may lack modern connectivity options.

---

### **Conclusion**

The **Heidenhain 680985-01 (3018 linear encoder)** is an excellent choice for applications demanding **high precision, reliability, and long-term durability**, particularly in industries where measurement accuracy is critical (e.g., aerospace, medical, or high-end machining). Its strengths lie in its **consistency, compatibility with Heidenhain systems, and robustness**, making it a trusted workhorse in industrial environments.

However, the **high cost, limited customization, and potential overkill for simpler applications** may not justify the investment for all users. If budget is a constraint or if the application does not require sub-micron precision, alternatives like **Renishaw, Siemens Sinamics, or even high-quality Chinese brands (e.g., Yaskawa, Omron)** could offer comparable performance at a lower price.

For **existing Heidenhain CNC setups or applications where precision is non-negotiable**, this encoder remains a **strong recommendation**. For **new installations or cost-sensitive projects**, a cost-benefit analysis against alternatives is advisable.

- **Buy if:** You need **ultra-high precision**, already use Heidenhain controllers, or operate in an environment where **reliability and longevity** are paramount.

- **Consider alternatives if:** Your budget is tight, the application does not require extreme precision, or you prefer modern digital interfaces over traditional analog outputs.

- **Best for:** **Industrial machining, robotics, aerospace, or medical equipment** where measurement accuracy directly impacts product quality.

Details:

Free Shipping in the USA ONLY. UPS Next day Air shipping available.

part #: 68098501 prices

• $405.00-$510.00

specifications linactuat:

• brand: Heidenhain
• mpn: 680985-01
• model: At3018
• part type: Linear Sensor
• country of origin: Germany

payments linactuat:

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

seller linactuat:

• # reviews: 2723
• rating: 100.0%
• city: Salem, New Hampshire

shipping linactuat:

• carrier: USPS, UPS
• type: Fixed
• cost: $0.00
• transit: 4-10 Days
• service: USPS Priority Mail, UPS Next Day Air
• class: Expedited, One-day

general linactuat:

• Industrial Automation Motion Controls > Rotary Linear Motion > Linear Encoders
• condition: Used

returns linactuat:

• policy: No Returns

offer linactuat:

• best offers: True
• quantity: 1
• started: May 9, 2026
• availability: In Stock
• options: Ship-to-home
• sold: 0

Heidenhain 680985-01 Is Similar To:

• 2061-523 Heidenhain Linear Encoder Interface (40.6% similar) R3-B201 JAN18 4984...(January 11th, 2018)
• 236 490-58 Heidenhain New Uls Linear Encoder (43.8% similar) New Heidenhain URLs 82 linear ENCODER,220MM nos other shipped direct to lands company Waynesboro pa...(August 2nd, 2018)
• 246 842-02 Heidenhain Linear Encoder (41.7% similar) R3-B200 JAN18 4956...(January 9th, 2018)
• 254-847-01 Heidenhain Encoder W Connector (30.4% similar) If another carrier such as ups or FedEx is required to ship due the size, then shipping costs may change...(November 12th, 2017)
• 284 669 03 Heidenhain Linear (30.4% similar) 08UMLC um approx. 4 um lb um approx. High long term speed stability sturdy construction and resistance to vibration finer signal periods after highest interpolation accuracy compact, lightweight, ways install durable dependable functions properly even many years of operation. Heidenhain glass scale ...(January 30th, 2018)
• 295466-0v Heidenhain Encoder New In (31.9% similar) If another carrier such as ups or FedEx is required to ship due the size, then shipping costs may change...(December 31st, 2017)
• 295466-37 Heidenhain Encoder New In (31.9% similar) If another carrier such as ups or FedEx is required to ship due the size, then shipping costs may change...(February 5th, 2018)
• 311133-25 Heidenhain Linear Encoder Universal Instruments New (35.9% similar) Rm uric encoder, linear unit is used on universal instruments GM Advents platform. NR linear encoder LIDA101C - 40 mobster 5UML 520 cod. This is a new unopened Heidenhain LED...(March 5th, 2018)
• 311133-31 Heidenhain Linear Encoder Universal (40.3% similar) This is a new Heidenhain LED linear encoder ml 1020MM Lidia 101 c uric encoder, - unit is used on universal instruments GM Advents platform...(September 10th, 2017)
• 31221502 Heidenhain Encoder New No (32.2% similar) If another carrier such as ups or FedEx is required to ship due the size, then shipping costs may change...(October 8th, 2017)
• 312767-02 Heindenhain Heidenhain Lif17r Linear (38.5% similar) If another carrier such as ups or FedEx is required to ship due the size, then shipping costs may change...(February 11th, 2018)