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Product description

Heidenhain 557644-11 belongs to the LC 493F series and is an absolute sealed linear encoder with a measuring length of 570 mm and an accuracy of ±5.0 µm. Its Fanuc 02 serial interface is designed for connection to a compatible Fanuc CNC control. Absolute position detection makes a reference traverse unnecessary after switch-on. A DIADUR glass scale with absolute and incremental tracks provides a measuring step of 50 nm at a grating period of 20 µm. The supply-voltage range is 3.6 to 5.25 V DC, with current consumption below 300 mA. A maximum traverse speed of 180 m/min supports both conventional machining centres and high-speed applications. The aluminium housing protects the glass scale, scanning carriage and guideway from chips, dust and liquids. The installed unit is rated IP 53; an optional DA 300 sealing-air connection can raise protection to IP 64. Mounting uses an optional rail or clamping elements selected for the installation. A separate adapter cable connects to the 14-pin male flange connector, and cable lengths up to 20 m are supported. Applications include milling, turning and grinding machines that require precise linear positioning. The operating-temperature range is 0 °C to 50 °C, and vibration resistance without the mounting rail is specified up to 100 m/s2. The 557644-11 identification and LC 493F assignment must match the Fanuc interface and installation geometry. A 557644-11 replacement should be selected from the complete machine documentation. Available from our warehouse in Germany.

Heidenhain 557644-11 LC 493F absolute linear encoder

Specifications

Manufacturer Heidenhain
Product series LC 493F
Manufacturer/Order/Identification number 557644-11
Measuring length 570 mm
Accuracy ±5.0 µm
Grating period 20 µm
Measuring step 0.05 µm (50 nm)
Data interface Fanuc 02 serial
Code Dual
Supply voltage 3.6–5.25 V DC, < 300 mA
Electrical connection 14-pin male flange connector
Maximum traverse speed ≤ 180 m/min
Operating temperature 0 °C to 50 °C
Protection rating IP 53 (IP 64 with DA 300 sealing air)
Cooling method Passive (no active cooling)
Weight approx. 0.49 kg (encoder without mounting rail)
Control cabinet with PLC modules and automation components
Machine downtime in a production environment

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Product safety

Manufacturer / EU responsible person

FAQ

Frequently asked questions

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Is there a warranty?

Yes. We provide a 14-day functional warranty for used items. The component must be functional on arrival, and the warranty applies only while the warranty seal remains undamaged. If a fault occurs within 14 calendar days, please contact us in writing. Depending on availability, we will either provide a replacement or refund the full purchase price after the item has been returned. Further details are set out in the terms and conditions supplied with our quotation.

How quickly do you ship, and which shipping options are available?

We normally dispatch available items immediately and, in many cases, on the same working day. For urgent requirements or machine downtime, we will identify the fastest suitable option and can confirm a specific delivery window on request. Express shipping and collection from our premises are also possible by arrangement. We ship worldwide using reliable parcel and freight carriers; freight shipments may require additional preparation to ensure safe delivery.

Is there a guarantee?

Yes, we provide a 14-day functional guarantee for used items. This means the component must be operational when received.

Please note that the guarantee only applies when the warranty seal is undamaged.

If a defect occurs within 14 calendar days, please contact us in writing. Subject to availability, we will provide a replacement or refund the full purchase price after return.

Further details are provided in the terms and conditions supplied with your quotation.

How quickly do you dispatch and which shipping options are available?

We generally dispatch immediately - in many cases on the same working day. For particularly urgent requirements or machine downtime, we find a suitable solution as quickly as possible and provide a specific delivery window on request.

Express shipping or collection from our premises is also possible, depending on the situation. State your requirements during the ordering process or contact us directly.

We ship worldwide and work with reliable shipping partners, from parcel services to freight forwarding. Freight shipments normally require some preparation so the goods arrive safely and undamaged.

Which payment methods are available?

Payment is normally made by bank transfer against invoice. Payment is due within 10 calendar days of receiving the goods.

As a rule, we offer purchase on account for all customers. In individual cases, such as new customers or particularly high-value components, we may agree advance payment. This decision is made individually and communicated transparently.

Can we return items if they were ordered incorrectly?

Because we sell exclusively to business customers (B2B), there is no general right of return and no consumer right of withdrawal.

Please note that returns of functioning goods are generally excluded. In justified exceptional cases, we can assess an individual solution, but this is not the standard procedure.

Is there a discount when ordering several items?

For larger order quantities or several items of one type, we can offer individual discounts.

Simply send us a quick enquiry - we check availability and will gladly prepare a tailored quotation with quantity pricing.

Do you also purchase industrial spare parts?

Yes, we also purchase automation components, such as frequency inverters, PLC assemblies, panels, servo motors and CPUs. Components from Siemens, Lenze, Schneider Electric, Control Techniques or Heidenhain are especially sought after, and other brands are also possible.

The process is straightforward: email us an inventory list or overview photos at info@reha-industriekomponenten.de. We calculate a market-based purchase price and send you an offer.

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