Airtac SEJ Adjustable Cylinder SEJ63X75-10S
The AirTAC Airtac SEJ Adjustable Cylinder SEJ63X75-10S 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 Ø63mm unit covers an effective stroke of 65–75mm without changing cylinders. Force is equal in both directions.
- BoreØ63 mm
- Nominal stroke75 mm
- Adjust window10 mm
- Effective stroke65–75 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 SEJ63X75-10S
The AirTAC SEJ63X75-10S is a double-acting, double-rod ISO 15552 profile cylinder with a 10mm adjustable stroke window, yielding an effective 65-75mm range. A rod exits both ends, ensuring equal force at 1402 N each way at 0.5 MPa. The rear stop screw dials in the retract end precisely during machine commissioning.
This bore 63mm unit features a PT3/8 port, a 20mm rod with an M16x1.5 thread, and adjustable air cushions at both ends. The integrated magnet (-S) supports CMSE reed and DMSE electronic sensors for position feedback.
Airtac SEJ Adjustable Cylinder SEJ63X75-10S Technical Specifications
| Model | Airtac SEJ Adjustable Cylinder SEJ63X75-10S |
|---|---|
| Series | SEJ ISO 15552 adjustable-stroke cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 75 mm |
| Adjustment window | 10 mm (65–75 mm) |
| Configuration | Double rod, double acting |
| Port size | PT3/8 |
| Rod thread | M16×1.5 |
|---|---|
| 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 (Ø63mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 1402 N |
| 0.7 MPa | 1962 N |
| Max (@1.0 MPa) | 286 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 SEJ63X75-10S
| SEJ | ISO 15552 double-rod double-acting cylinder with adjustable stroke. |
|---|---|
| 63 | Bore size in mm. |
| ×75 | 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 SEJ63X75-10S Is Used
Press Fit Dial-In
Fine-tune the 65-75mm retract stop on an assembly press to seat bearings precisely without changing hardware, utilizing the 1962 N retract force at 0.7 MPa.
Product Changeover
Adjust the end position on a packaging line to accommodate different carton heights quickly, relying on the equal both-way force for stable actuation.
Prototype Positioning
Dial in the exact clamping distance during R&D testing of new jigs, locking the rear rod stop screw once the optimal 65-75mm travel is found.
Is the Airtac SEJ Adjustable Cylinder SEJ63X75-10S the Right Cylinder?
Verify the 10mm adjustment window covers your exact end-position requirement. If you need less force, the adjacent 50mm bore provides 825 N at 0.5 MPa; if scaling up, the 80mm bore yields 2268 N. If your stroke is fixed and never requires changeover, a standard SED double-rod cylinder is sufficient.
This cylinder does not hold position on air loss; the cushion only decelerates near stroke end. For fail-safe holding, use an external rod lock. As a dimensionally interchangeable ISO 15552 cylinder, match the 75mm stroke, 10mm window, PT3/8 port, and mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) for direct replacement.
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 SEJ63X75-10S FAQ
The 10mm adjustment window lets you mechanically dial the retract stroke from 65mm up to the nominal 75mm. You set the exact end position via a stop screw on the back rod and lock it in place.
Because the rod exits both ends, force is identical in both directions: 1402 N at 0.5 MPa, 1962 N at 0.7 MPa, and a maximum of 286 kgf at 1.0 MPa.
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