Excel Automation is an authorized Tri-Tronics Photocraft distributor. Contact us for sales and technical support.
Features and Options:
- Accurate linear measurement
- Integrated mounting arm
- Economical single measuring wheel
- Compact size 20
- “Anti-Jitter” and other material handling features
- IP66 optional
Made in the USA
Made in the USA
Product Description
The model R21 is a size 20 encoder that is a compact 2″ diameter x 1-7/8″ (Ø51mm x 48mm) long optical shaft encoder with an integral mounting arm, compatible with a variety of mounting accessories for installation either above or below a moving web or conveyor. When used with the MW-8 (8.00″ circumference) or MW-20 (20.00cm circumference) measuring wheel it can accurately track the web or conveyor to within ±.007″ or ±.016cm per revolution. Solid construction and heavy duty bearings make this encoder a great choice for long-term operation in continuous duty applications.
Industry Use
| Conveyor Manufacturers | Printing and Labeling | Custom Machine Builders | Packaging |
| Material Handling |
Product Documentation |
Additional Information |
 DatasheetDrawings |
Output Types Counts per Revolution Options Anti-Jitter Option Supply Voltage Options Output Circuits |
Modified Versions
| Modification | Description | |
| M203 | Environmentally sealed – IP66 | Datasheet |
| M265 | R21 with shortened mounting handle | Datasheet |