Airtac SEJ Adjustable Cylinder SEJ100BX50-50
The AirTAC SEJ Adjustable Cylinder SEJ100BX50-50 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 0–50mm without changing cylinders. Force is equal in both directions.
- BoreØ100 mm
- Nominal stroke50 mm
- Adjust window50 mm
- Effective stroke0–50 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 SEJ100BX50-50
The AirTAC SEJ100BX50-50 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 50 mm adjustable stroke window. A rod exits both ends, yielding identical annulus areas and an equal force of 3681 N each way at 0.5 MPa. The SUS304 stainless steel rod suits corrosive or washdown environments.
A mechanical stop screw on the back rod lets you dial the retract end position over a 0-50 mm range, perfect for fine-tuning a stop on the machine without swapping hardware. The extruded aluminum barrel has no external tie rods, and field-adjustable air cushions at both ends decelerate the load near stroke end.
Airtac SEJ Adjustable Cylinder SEJ100BX50-50 Technical Specifications
| Model | Airtac SEJ Adjustable Cylinder SEJ100BX50-50 |
|---|---|
| Series | SEJ ISO 15552 adjustable-stroke cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 50 mm |
| Adjustment window | 50 mm (0–50 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 SEJ100BX50-50
| SEJ | ISO 15552 double-rod double-acting cylinder with adjustable stroke. |
|---|---|
| 100 | Bore size in mm. |
| ×50 | 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 SEJ100BX50-50 Is Used
Press Die Clearance
Dial the 0-50 mm retract stop to set precise die clearance during stamping commissioning, utilizing the 3681 N both-way force to hold the tooling.
Packaging Changeover
Adjust the mechanical end position to match different carton heights on a packaging line, avoiding hardware swaps while leveraging the 5153 N retract force.
Washdown Conveyors
Employ the SUS304 rod for food-grade washdown duty on a conveyor diverter, setting the exact retract position to sort products without sensor magnets.
Is the Airtac SEJ Adjustable Cylinder SEJ100BX50-50 the Right Cylinder?
Confirm this 50 mm adjustment window covers your required end-position range. If you need less force, the 80 mm bore delivers 2268 N both ways at 0.5 MPa; if you need more, the 125 mm bore provides 5734 N. If the exact stroke is fixed and never changes, a standard SED double-rod cylinder is sufficient. This SKU lacks a magnet (-S), so it cannot host CMSE or DMSE position sensors.
For ISO 15552 dimensional interchangeability, match the 100 mm bore, 0-50 mm effective stroke, PT1/2 port, and your required mounting (Basic, FA, LB, TC, FTC, TCM1, or TCM2). The adjustable air cushion decelerates the load but does not hold position on air loss; for fail-safe holding, use an external rod lock.
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 SEJ100BX50-50 FAQ
A stop screw on the rear rod mechanically shortens the retract stroke over a 50 mm window. You can dial the effective stroke from 0 to 50 mm, then lock the screw in place for precise end-position tuning.
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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