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Product description

Heidenhain 533903-73 is the AK ERA 4480 scanning head for the ERA 4480 series of modular, bearingless incremental angle encoders. With 14,000 lines and a graduation period of 40,000 µm, it supplies high-resolution angular-position signals for demanding machine-tool applications. The analogue output signal is approximately 1 Vpp, and the documented cut-off frequency is 350 kHz. An analogue reference mark supplies a defined reference position within one revolution. The scanning head operates from a 5 V supply with a tolerance of ±10%. Its IP 40 rating complies with EN 60529, and the operating-temperature range is −10 to +80 °C. The electrical interface uses a 12-pin M23 coupling wired to Heidenhain connection assignment D549380. A 2.00 m PUR cable with a diameter of 3.7 mm provides installation flexibility inside the machine enclosure. A complete ERA 4480 measuring system consists of two separately supplied components: the graduation drum mounted on the drive shaft and the AK ERA 4480 scanning head. Typical applications include lathes, milling machines, machining centres, rotary tables and tilting axes. Before replacement, compare the complete 533903-73 identification, line count, graduation period, connector assignment, cable length and matching drum. This scanning head is available directly from our warehouse in Germany.

Heidenhain 533903-73 AK ERA 4480 scanning head

Specifications

Manufacturer Heidenhain
Product series ERA 4480 series
Manufacturer/Order/Identification number 533903-73
Product designation AK ERA 4480 scanning head
Line count 14,000
Graduation period 40,000 µm
Output signal approx. 1 Vpp
Cut-off frequency (−3 dB) 350 kHz
Reference mark Analogue
Supply voltage 5 V (±10 %)
Protection rating IP 40 (EN 60529)
Operating temperature −10 to +80 °C
Electrical connection 12-pin M23 coupling
Connection assignment D549380
Cable length 2.00 m
Cable type PUR, Ø 3.7 mm
Cooling method Natural convection
Weight approx. 0.15 kg
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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