Airtac SEJ Adjustable Cylinder SEJ32X75-30S
The AirTAC Airtac SEJ Adjustable Cylinder SEJ32X75-30S 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 30mm window, so this Ø32mm unit covers an effective stroke of 45–75mm without changing cylinders. Force is equal in both directions.
- BoreØ32 mm
- Nominal stroke75 mm
- Adjust window30 mm
- Effective stroke45–75 mm
- Port sizePT1/8
- CushionAdjustable, 27 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 SEJ32X75-30S
The AirTAC SEJ32X75-30S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 30 mm adjustable stroke window. A rod exits both ends, meaning the annular area is identical in both directions. This provides an equal output force of 345 N each way at 0.5 MPa, ensuring perfectly balanced push and pull kinematics.
You can dial the retract end up to 30 mm via a mechanical stop screw on the back rod, yielding an effective stroke range of 45 to 75 mm. This built-in adjustability allows precise end-position tuning during machine commissioning without swapping hardware. The extruded aluminum barrel carries no external tie rods, and the -S magnet option enables position feedback via CMSE reed or DMSE electronic sensors.
Airtac SEJ Adjustable Cylinder SEJ32X75-30S Technical Specifications
| Model | Airtac SEJ Adjustable Cylinder SEJ32X75-30S |
|---|---|
| Series | SEJ ISO 15552 adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 75 mm |
| Adjustment window | 30 mm (45–75 mm) |
| Configuration | Double rod, double acting |
| Port size | PT1/8 |
| Rod thread | M10×1.25 |
|---|---|
| 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, 27 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 30mm window. Port options: PT (standard) / G (BSPP).
Theoretical Output Force (Ø32mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 346 N |
| 0.7 MPa | 484 N |
| Max (@1.0 MPa) | 70 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 SEJ32X75-30S
| SEJ | ISO 15552 double-rod double-acting cylinder with adjustable stroke. |
|---|---|
| 32 | Bore size in mm. |
| ×75 | Nominal stroke length in mm. |
| -30 | 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 SEJ32X75-30S Is Used
Press Stroke Calibration
Dial in the exact 45 to 75 mm pressing depth for thin sheet metal bending, using the 345 N force and back-rod stop screw to set precise end stops during machine commissioning.
Packaging Changeover
Adjust the retract distance on the fly to accommodate different carton heights, relying on the equal both-way force to securely push and pull packaging flaps without rotating hardware.
Component Insertion
Fine-tune the pressing stroke for delicate electronic pin insertion, leveraging the 27 mm cushion length to decelerate the 32 mm rod gently before the end of the stroke.
Is the Airtac SEJ Adjustable Cylinder SEJ32X75-30S the Right Cylinder?
This 32 mm bore delivers 345 N at 0.5 MPa (483 N at 0.7 MPa). If your application requires less force, step down to the 25 mm bore (not in SEJ series) or if you need more force, step up to the 40 mm bore which provides 528 N both ways at 0.5 MPa. If your end position is fixed and never changes, a standard SED double-rod cylinder provides the same balanced force without the adjustment hardware.
For a drop-in ISO 15552 replacement, verify the 75 mm nominal stroke, 30 mm adjust window, PT1/8 port, and your required mounting (Basic, FA, LB, TC, FTC, TCM1, or TCM2). The adjustable air cushion at both ends decelerates the load near stroke end but is not a fail-safe lock; if you need position holding on air loss, use an external rod lock like BSED.
Quick checklist
- ✓ Need on-machine stroke fine-tuning?
- ✓ Adjustment window (30mm) 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 30mm 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 SEJ32X75-30S FAQ
The -30 designation means the retract stroke can be mechanically dialed in over a 30 mm window using a stop screw on the back rod. This allows the effective stroke to be adjusted anywhere from 45 mm up to the full 75 mm, which is ideal for fine-tuning end positions on the machine without replacing the cylinder.
Because a rod exits both ends, the force is identical in both directions. This 32 mm bore cylinder provides 345 N at 0.5 MPa, 483 N at 0.7 MPa, and a maximum of 70 kgf at 1.0 MPa.
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