Refraction Units
TR-500A Ophthalmic Refraction Unit, 2130 mm Overall Height
2130 mm overall height, 840 mm tabletop
A refraction unit with a 1510 × 1000 × 2130 mm installation envelope. The main tabletop is 840 × 405 mm, with a second size of 670 × 405 mm; it rotates through 90° and slides 330 mm, and the chair backrest adjusts from 90° to 135°.

Features
What this model does.
- 1510 × 1000 × 2130 mm installation envelope
- Two tabletop sizes, 840 × 405 and 670 × 405 mm
- Tabletop rotates through 90° and slides 330 mm
- Backrest adjusts from 90° to 135°
- Chair rotates ±60°; headrest rises up to 150 mm
- Swing arm adjusts ±30° up and down
Specifications
Specifications.
Dimensions and ratings for the standard configuration. Anything not listed here is confirmed on the quotation rather than estimated.
| Tabletop dimensions | 840 × 405 mm and 670 × 405 mm |
|---|---|
| Tabletop rotation | 90° |
| Tabletop slide travel | 330 mm |
| Chair height range | 460 – 600 mm |
| Chair rotation | ±60° |
| Backrest range | 90° – 135° |
| Headrest rise | ≤150 mm |
| Swing-arm range | ±30° |
| Rated chair load | 150 kg |
| Power supply | AC 110 V / 60 Hz and AC 220 V / 50 Hz |
| Motor / lighting | Motor 55 W; illuminator 40 W |
Supply scope
What is included.
Standard and optional items, plug type and voltage version are confirmed against the quotation. Installation dimensions: 1510 × 1000 × 2130 mm; machine weight 168 kg.
Diagnostic instruments shown in product photography illustrate use and are not part of the furniture supply scope unless a quotation states otherwise.
Standard warranty is 12 months from delivery. Within that period ENOCH supplies the replacement parts needed for any fault not caused by misuse or accidental damage.
Planning
Should I specify TR-500A or TR-900?
Both publish the same working geometry — an 840 × 405 mm main tabletop with a second 670 × 405 mm size, 90° rotation, 330 mm of slide travel and 460–600 mm of chair height. The difference is the envelope: TR-500A is 1510 × 1000 × 2130 mm, TR-900 is 1500 × 1000 × 1990 mm. Specify on the height the room allows.
Tell us the room and the instruments.
Send your dimensions, quantity and destination. You will get a written configuration, lead time and quotation — usually within one business day.