Airtac SEJ Adjustable Cylinder SEJ100BX200-50S
The AirTAC SEJ Adjustable Cylinder SEJ100BX200-50S is a genuine double-acting ISO 15552 double-rod cylinder with a mechanically ADJUSTABLE stroke: a back-rod stop screw lets you fine-tune the retract end over a 50mm window, so this Ø100mm unit covers an effective stroke of 150–200mm without changing cylinders. Force is equal in both directions.
- BoreØ100 mm
- Nominal stroke200 mm
- Adjust window50 mm
- Effective stroke150–200 mm
- Port sizePT1/2
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SEJ Adjustable Cylinder SEJ100BX200-50S
The AirTAC SEJ100BX200-50S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 50 mm adjustable stroke window, yielding an effective travel of 150 to 200 mm. A SUS304 stainless steel rod exits both ends, delivering identical extend and retract forces of 3681 N at 0.5 MPa.
You dial in the exact retract end-position via a mechanical stop screw on the back rod, then lock it in place. This configuration omits the FB, CA, CB, and CR mounts entirely, offering a focused set of ISO 15552 attachments (Basic, FA, LB, TC, FTC, TCM1, TCM2). The integrated -S magnet pairs directly with CMSE reed and DMSE electronic sensors for precise end-of-travel signaling.
Airtac SEJ Adjustable Cylinder SEJ100BX200-50S Technical Specifications
| Model | Airtac SEJ Adjustable Cylinder SEJ100BX200-50S |
|---|---|
| Series | SEJ ISO 15552 adjustable-stroke cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 200 mm |
| Adjustment window | 50 mm (150–200 mm) |
| Configuration | Double rod, double acting |
| Port size | PT1/2 |
| Rod thread | M20×1.5 |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C (0–150 °C with FKM seals) |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 36 mm |
Specifications follow the official AirTAC SEJ datasheet and ISO 15552 / VDMA 24562 dimensions. The adjustment screw shortens the retract end only; do not exceed the 50mm window. Port options: PT (standard) / G (BSPP).
Theoretical Output Force (Ø100mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 3682 N |
| 0.7 MPa | 5154 N |
| Max (@1.0 MPa) | 751 kgf |
A rod exits both ends, so extend and retract force are identical. Actual usable force is lower than theoretical; size with a safety margin.
Model Code: Airtac SEJ Adjustable Cylinder SEJ100BX200-50S
| SEJ | ISO 15552 double-rod double-acting cylinder with adjustable stroke. |
|---|---|
| 100 | Bore size in mm. |
| ×200 | Nominal stroke length in mm. |
| -50 | Adjustment stroke window in mm (options: 10/20/30/40/50/75/100). |
| -S | Optional built-in magnet for CMSE / DMSE sensor sensing. |
Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B). Seals: TPU (blank) / FKM high-temp (H) / NBR (N). Thread: PT (blank) / G. Mounting (SEJ): Basic, LB, FA, TC, FTC, TCM1, TCM2. Related: SED (double rod, fixed stroke), SE (single rod).
Where the Airtac SEJ Adjustable Cylinder SEJ100BX200-50S Is Used
Filler Valve Tuning
Dial the 150-200 mm stroke range to hit a beverage filler valve precisely, leveraging the 5153 N retract force to seat the stainless rod assembly cleanly in washdown environments.
Packaging Changeover
Adjust the retract stop to accommodate varying carton heights on a packaging line, using the equal both-way force to push and pull the folding mechanism without re-mounting hardware.
Press Calibration
Fine-tune the end position of a light-duty stamping press during commissioning, locking the stop screw once the 3681 N contact force is perfectly matched to the material.
Is the Airtac SEJ Adjustable Cylinder SEJ100BX200-50S the Right Cylinder?
Confirm the 50 mm adjustment window covers your required positioning range. If you need less force, the 80 mm bore provides 2268 N at 0.5 MPa; if you require more, the 125 mm bore yields 5734 N. If your end-position never varies, a fixed-stroke SED cylinder is sufficient.
This cylinder does not hold position on air loss; the adjustable air cushion at both ends only decelerates the load near stroke end, so add an external rod lock for fail-safe holding. For direct ISO 15552 replacement, match the 100 mm bore, 200 mm nominal stroke, 50 mm window, PT1/2 port, and your required mounting hardware. At 200 mm stroke, the double-rod design naturally resists torsion and side-load, though external guides are recommended for heavy lateral loads.
Quick checklist
- ✓ Need on-machine stroke fine-tuning?
- ✓ Adjustment window (50mm) covers your range
- ✓ Equal force both directions OK
- ✓ Port/thread type (PT/G)
- ✓ Magnet (-S) for CMSE/DMSE sensors?
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Set the stop screw within the 50mm window; lock it after adjusting.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (LB/FA/TC/FTC/TCM1/TCM2).
- check Installation by qualified personnel per AirTAC docs.
Airtac SEJ Adjustable Cylinder SEJ100BX200-50S FAQ
A stop screw on the rear rod mechanically shortens the retract stroke over a 50 mm window. You can dial the effective travel anywhere from 150 mm up to the full 200 mm, then lock the screw to maintain that exact end position.
Because it is a double-rod cylinder, the force is identical in both directions: 3681 N at 0.5 MPa, 5153 N at 0.7 MPa, and a maximum of 751 kgf at 1.0 MPa.
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