Technical Overview
The Omron E32-D21R 2M is a reflective fiber unit with a straight M3 threaded sensing head, approximately 60° aperture and flexible R1 fiber cable. Omron specifies 2 m cable length, free-cut construction, zero unbendable cable length, SUS304 sensing-head material, IP67 protection and -40 to +70°C operation. With E3X-HD, catalog distances are up to 140 mm in GIGA, 40 mm in high-speed, 60 mm in standard and 16 mm in super-high-speed mode; E3NX-FA values differ. Omron currently lists the exact model for sale as standard stock.
M3 reflective fiber head with 2 m flexible R1 cable and IP67 protection.
Key Features
- Exact Omron model E32-D21R 2M reflective fiber head
- M3 threaded straight head; approximately 60° aperture
- 2 m flexible R1 fiber; free-cut with no unbendable section
- E3X-HD sensing distances up to 140 mm GIGA, 60 mm standard, 40 mm high-speed, 16 mm super-high-speed
- E3NX-FA distances up to 210 mm GIGA, 90 mm standard, 60 mm high-speed, 16 mm super-high-speed
- SUS304 sensing-head material; IP67 protection
- Operating temperature -40 to +70°C
- Current Omron page indicates for-sale, standard-stock status
Flexible R1 fiber accommodates tight routing while the M3 head performs reflective sensing.
Technical Specification Matrix
| Parameter | Value |
| Product type | Reflective fiber optic sensor head |
| Head style | M3 threaded, straight; top view; approximately 60° aperture |
| Fiber cable | 2 m; flexible R1; free cut; no unbendable section |
| Sensing distance with E3X-HD | GIGA 140 mm max.; high-speed 40 mm; standard 60 mm; super-high-speed 16 mm |
| Sensing distance with E3NX-FA | GIGA 210 mm max.; high-speed 60 mm; standard 90 mm; super-high-speed 16 mm |
| Sensing head material | SUS304 |
| Protection rating | IP67 |
| Operating temperature | -40 to +70°C |
| Weight | Approx. 20 g packaged |
| Compatible amplifier | Omron E3X-HD or E3NX-FA; use mode-specific ranges and confirm target surface |
| Supply status | Active; current Omron page lists for sale as standard stock. |
| Physical Weight (kg) | Approximately 0.020 kg packaged. |
| Dimensions L x W x H (cm) | See Omron E32-D21R 2M dimensional drawing; no overall L × W × H figure stated. |
Suggested applications
Engineering suggestions require suitability checks for your installation.
1. Reflective part detection
A compact reflective head can detect small parts where an integrated sensor body would not fit near the target.
Potential use
Mount the M3 head toward a stable target region and tune a compatible amplifier to the actual surface and required response mode.
Reflective
M3
Flexible R1
2. Fiber routing in moving equipment
The flexible fiber lead can be routed through tight machine paths where larger bend-resistant cable cannot be accommodated.
Potential use
Keep bends within the R1 specification, secure the lead against abrasion and verify the target's detection margin.
2 m cable
R1 bend
IP67