HEIDENHAIN LF 481C Linear Encoder
HEIDENHAIN LF 481 without and with mounting spar. Catalog photo.
The HEIDENHAIN LF 481C (also written LF481C) is a linear encoder. If yours is giving trouble, Automation and Metrology can evaluate it before you commit to a replacement. We work on older encoders, including units that may no longer be available new.
we specialize in machine down linear encoder repair or replacement
How it works: Send us your scale for a free evaluation. We will give you a repair quote quickly, before work starts.
Turnaround: Rush repairs typically take 1-2 days; standard repairs typically take 1-2 weeks. We will confirm the timing for your unit with the quote. If repair is not practical, we can help identify a suitable current HEIDENHAIN replacement.
Catalog specifications
From the HEIDENHAIN Linear Encoders for Numerically Controlled Machine Tools catalog, July 2010. Same catalog page as the LF 481. The LF 481C differs by its distance-coded reference marks. The photo shows the LF 481 series; check your unit's ID tag. Values are catalog values for this model; confirm your unit's configuration from its ID tag.
| Accuracy grade | ±3 µm; ±5 µm |
|---|---|
| Measuring lengths (mm) | 50, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, 600, 650, 700, 750, 800, 900, 1000, 1120, 1220 (mounting spar recommended) |
| Reference marks (LF 481C) | Distance-coded |
| Expansion coefficient | 10 x 10-6 K-1 |
| Traversing speed | Up to 30 m/min |
| Required moving force | Up to 5 N |
| Vibration 55 to 2000 Hz | Up to 80 m/s² (IEC 60 068-2-6) |
| Shock (11 ms) | Up to 100 m/s² (IEC 60 068-2-27) |
| Acceleration | Up to 30 m/s² in measuring direction |
| Weight (without mounting spar) | 0.4 kg + 0.5 kg/m measuring length |
| Measuring standard | DIADUR phase grating on steel |
| Incremental signals | About 1 VPP |
| Grating period / signal period | 8 µm / 4 µm |
| Cutoff frequency (–3 dB) | At least 200 kHz |
| Power supply (without load) | 5 V ±5 % / less than 200 mA |
| Electrical connection | Separate adapter cable (1 m/3 m/6 m/9 m) connectable to mounting block |
| Cable length (HEIDENHAIN cable) | Up to 150 m |
| Protection (IEC 60 529) | IP 53 when mounted according to the mounting instructions; IP 64 if compressed air is connected via DA 300 |
| Operating temperature | 0 °C to 50 °C |
Documents
Please send the full model and ID number from the unit's label, plus its measuring length and connector details, so we can check the right configuration. Do not assume a similar model is a drop-in replacement.
Request a Quote Or call 1-888-354-2525.