Airtac SEJ Adjustable Cylinder SEJ80BX100-10S
The AirTAC SEJ Adjustable Cylinder SEJ80BX100-10S 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 10mm window, so this Ø80mm unit covers an effective stroke of 90–100mm without changing cylinders. Force is equal in both directions.
- BoreØ80 mm
- Nominal stroke100 mm
- Adjust window10 mm
- Effective stroke90–100 mm
- Port sizePT3/8
- 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 SEJ80BX100-10S
The AirTAC SEJ80BX100-10S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 10 mm mechanical stroke adjuster. A rod exits both ends, yielding identical annulus areas and an equal drive force of 2268 N each way at 0.5 MPa. The rear stop screw lets you dial the retract position back, providing an effective stroke range of 90 to 100 mm for exact machine commissioning.
This configuration uses a SUS304 stainless steel rod for corrosion resistance in washdown environments. It includes a magnet for CMSE reed or DMSE electronic sensors, and field-adjustable air cushions at both ends to manage kinetic energy. The extruded aluminum barrel omits external tie rods, maintaining strict ISO 15552 dimensional interchangeability.
Airtac SEJ Adjustable Cylinder SEJ80BX100-10S Technical Specifications
| Model | Airtac SEJ Adjustable Cylinder SEJ80BX100-10S |
|---|---|
| Series | SEJ ISO 15552 adjustable-stroke cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 100 mm |
| Adjustment window | 10 mm (90–100 mm) |
| Configuration | Double rod, double acting |
| Port size | PT3/8 |
| 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 10mm window. Port options: PT (standard) / G (BSPP).
Theoretical Output Force (Ø80mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 2268 N |
| 0.7 MPa | 3175 N |
| Max (@1.0 MPa) | 463 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 SEJ80BX100-10S
| SEJ | ISO 15552 double-rod double-acting cylinder with adjustable stroke. |
|---|---|
| 80 | Bore size in mm. |
| ×100 | Nominal stroke length in mm. |
| -10 | 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 SEJ80BX100-10S Is Used
Forming Press Stop
Dial the 10 mm window to set the exact lower dead center on a forming press, using the 3175 N retract force to consistently pull the die back to a 95 mm position.
Packaging Changeover
Switch a packaging line between box sizes by adjusting the retract end within the 90-100 mm range, letting the SUS304 rod endure washdown without rusting.
Is the Airtac SEJ Adjustable Cylinder SEJ80BX100-10S the Right Cylinder?
Verify the 10 mm adjustment window covers your end-position tolerance, giving a 90 to 100 mm effective stroke. If you need less force, the adjacent 63 mm bore provides 1402 N at 0.5 MPa; if you need more, the 100 mm bore yields 3681 N at 0.5 MPa. If the exact end stop never changes after setup, a fixed-stroke SED saves complexity.
For position holding on air loss, note this cylinder does not lock; use an external rod lock like BSED. The PT3/8 port and M20x1.5 rod thread match standard ISO 15552 footprints. At this 100 mm stroke, external guides help prevent side-load wear on the SUS304 rod seals.
Quick checklist
- ✓ Need on-machine stroke fine-tuning?
- ✓ Adjustment window (10mm) 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 10mm 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 SEJ80BX100-10S FAQ
A stop screw on the rear rod mechanically shortens the retract stroke by up to 10 mm. This gives an effective stroke range of 90 to 100 mm. You lock the screw after finding the exact end position.
Because it is a double-rod cylinder, force is equal in both directions: 2268 N at 0.5 MPa, 3175 N at 0.7 MPa, and a maximum of 463 kgf at 1.0 MPa.
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