Airtac SEJ Adjustable Cylinder SEJ100BX150-50S
The AirTAC SEJ Adjustable Cylinder SEJ100BX150-50S 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 100–150mm without changing cylinders. Force is equal in both directions.
- BoreØ100 mm
- Nominal stroke150 mm
- Adjust window50 mm
- Effective stroke100–150 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 SEJ100BX150-50S
The AirTAC SEJ100BX150-50S is a double-acting, double-rod ISO 15552 profile cylinder featuring a SUS304 stainless steel rod for corrosion resistance. A rod exits both ends, providing identical annulus areas and equal force in both directions—delivering 3681 N each way at 0.5 MPa and 5153 N at 0.7 MPa.
The retract stroke is mechanically adjustable via a stop screw on the back rod over a 50 mm window, yielding an effective stroke range of 100-150 mm. It includes a magnet for CMSE or DMSE sensors and field-adjustable air cushions at both ends to decelerate the load near stroke end.
Airtac SEJ Adjustable Cylinder SEJ100BX150-50S Technical Specifications
| Model | Airtac SEJ Adjustable Cylinder SEJ100BX150-50S |
|---|---|
| Series | SEJ ISO 15552 adjustable-stroke cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 150 mm |
| Adjustment window | 50 mm (100–150 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 SEJ100BX150-50S
| SEJ | ISO 15552 double-rod double-acting cylinder with adjustable stroke. |
|---|---|
| 100 | Bore size in mm. |
| ×150 | 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 SEJ100BX150-50S Is Used
Diverter Gate Fine-Tuning
Dial in the exact retract stop on a packaging line diverter gate over the 50 mm window, using the 5153 N both-way force to reliably shift heavy product flows.
Food Processing Changeover
Adapt a SUS304 stainless steel washdown press to varying container heights, adjusting the 100-150 mm stroke range on the machine without swapping hardware.
Pallet Stop Positioning
Commission a heavy pallet stop precisely during setup, locking the back-rod screw to set the exact end position while handling loads up to 751 kgf.
Is the Airtac SEJ Adjustable Cylinder SEJ100BX150-50S the Right Cylinder?
Verify the 50 mm adjustment window covers your required end-position range, giving an effective 100-150 mm stroke. If your application requires less force, stepping down to the 80 mm bore yields 2268 N at 0.5 MPa; if you need more, the 125 mm bore provides 5734 N at 0.5 MPa. For fixed-retract applications without fine-tuning, a standard SED cylinder suffices. Note that the air cushion and mechanical stop are not locking brakes; for fail-safe position holding on air loss, use an external rod lock or BSED. This cylinder is dimensionally interchangeable per ISO 15552 with a PT1/2 port and M20x1.5 rod thread.
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 SEJ100BX150-50S FAQ
The retract stroke is adjustable via a mechanical stop screw on the back rod over a 50 mm window. This allows the effective stroke to be dialed in anywhere from 100 mm up to the nominal 150 mm.
Because the rod exits both ends, the force is equal in both directions. It provides 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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