Airtac SEJ Adjustable Cylinder SEJ32X75-40S
The AirTAC Airtac SEJ Adjustable Cylinder SEJ32X75-40S 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 40mm window, so this Ø32mm unit covers an effective stroke of 35–75mm without changing cylinders. Force is equal in both directions.
- BoreØ32 mm
- Nominal stroke75 mm
- Adjust window40 mm
- Effective stroke35–75 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 SEJ32X75-40S
The AirTAC SEJ32X75-40S is a double-acting, double-rod ISO 15552 profile cylinder with a 40 mm adjustable stroke window. You can dial the retract end-position from 35 mm up to the 75 mm nominal stroke, letting one unit cover a precise range without swapping hardware. Because a rod exits both ends, the annulus area is identical in both directions, delivering an equal 345 N of force each way at 0.5 MPa.
This 32 mm bore variant features a PT1/8 port, a 12 mm rod with an M10x1.25 thread, and includes a magnet for position sensing. The retract stroke is set via a stop screw on the back rod; you lock it after dialing in your target. Adjustable air cushions at both ends decelerate the load near the stroke ends, and the extruded aluminum barrel ensures ISO 15552 dimensional interchangeability.
Airtac SEJ Adjustable Cylinder SEJ32X75-40S Technical Specifications
| Model | Airtac SEJ Adjustable Cylinder SEJ32X75-40S |
|---|---|
| Series | SEJ ISO 15552 adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 75 mm |
| Adjustment window | 40 mm (35–75 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 40mm 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 SEJ32X75-40S
| SEJ | ISO 15552 double-rod double-acting cylinder with adjustable stroke. |
|---|---|
| 32 | Bore size in mm. |
| ×75 | Nominal stroke length in mm. |
| -40 | 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 SEJ32X75-40S Is Used
Gripper Commissioning
Fine-tune the retract distance on automated gripper arms by 40 mm during setup, using the 345 N both-way force to securely pull parts without re-mounting hardware.
Changeover Stops
Dial the stroke between 35 and 75 mm to accommodate different part heights on a packaging conveyor, leveraging the equal push/pull force for consistent indexing.
Trial Positioning
Test exact insertion depths on a light-duty assembly pick-and-place, adjusting the mechanical stop screw until the 483 N thrust hits the exact target depth.
Is the Airtac SEJ Adjustable Cylinder SEJ32X75-40S the Right Cylinder?
Confirm this 40 mm adjustment window covers your required end-position range. If you need less force, there is no smaller bore in the SEJ series, so you must regulate pressure down. If your application requires more thrust, stepping up to the 40 mm bore yields 528 N at 0.5 MPa. If you do not need variable stops, a fixed-stroke SED cylinder provides the same double-rod output in a shorter overall length.
For an ISO 15552 replacement, match the 75 mm stroke, 40 mm window, PT1/8 port, and your mounting choice from Basic, FA, LB, TC, FTC, TCM1, or TCM2. Note that the air cushion and stop screw decelerate the load but do not hold position on air loss; a fail-safe hold requires an external rod lock.
Quick checklist
- ✓ Need on-machine stroke fine-tuning?
- ✓ Adjustment window (40mm) 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 40mm 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 SEJ32X75-40S FAQ
A stop screw on the rear rod mechanically limits the retract stroke. You can adjust the effective stroke anywhere from 35 mm up to the full 75 mm, then lock the screw in place. This allows precise end-position tuning directly on the machine without changing the cylinder.
Because it is a double-rod cylinder, the force is identical in both directions. It 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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