Airtac SEJ Adjustable Cylinder SEJ63X150-10S
The AirTAC Airtac SEJ Adjustable Cylinder SEJ63X150-10S 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 140–150mm without changing cylinders. Force is equal in both directions.
- BoreØ63 mm
- Nominal stroke150 mm
- Adjust window10 mm
- Effective stroke140–150 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 SEJ63X150-10S
The AirTAC SEJ63X150-10S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 10mm adjustable stroke window, yielding an effective stroke range of 140-150mm. A rod exits both ends, creating identical annular areas so output force is equal in both directions at 1402 N each way at 0.5 MPa. The extruded aluminum barrel is dimensionally interchangeable per ISO 15552 with no external tie rods.
A stop screw on the back rod lets you mechanically dial in the retract end-position during commissioning without changing hardware. The -S magnet supports CMSE reed and DMSE electronic sensors for end-of-stroke confirmation. Field-adjustable air cushions at both ends decelerate the load near stroke end, and the PT3/8 port pairs with a 20mm rod and M16x1.5 thread.
Airtac SEJ Adjustable Cylinder SEJ63X150-10S Technical Specifications
| Model | Airtac SEJ Adjustable Cylinder SEJ63X150-10S |
|---|---|
| Series | SEJ ISO 15552 adjustable-stroke cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 150 mm |
| Adjustment window | 10 mm (140–150 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 SEJ63X150-10S
| SEJ | ISO 15552 double-rod double-acting cylinder with adjustable stroke. |
|---|---|
| 63 | Bore size in mm. |
| ×150 | 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 SEJ63X150-10S Is Used
CNC Lathe Chuck Clamping
Dial in the exact 140-150mm clamping stroke on a CNC lathe to accommodate raw bar stock variances, delivering 1962 N of equal both-way clamping and release force at 0.7 MPa.
Packaging Changeover
Adjust the retract stop by up to 10mm when switching a packaging line between different carton heights, using the 1402 N both-way force to positively drive the folding mechanism.
Lab Test Fixture
Fine-tune the exact contact position against a test specimen during commissioning, locking the back-rod stop screw securely once the 1402 N test load is achieved.
Is the Airtac SEJ Adjustable Cylinder SEJ63X150-10S the Right Cylinder?
Confirm the 10mm adjustment window covers your required end-position variance; for a wider tuning range, select a larger -NN tail. If you need less force, the adjacent 50mm bore provides 825 N both ways at 0.5 MPa, while stepping up to the 80mm bore yields 2268 N. If you never need to fine-tune the end position, a fixed-stroke SED is sufficient. For a drop-in ISO 15552 replacement, match the 63mm bore, 150mm stroke, PT3/8 port, and mounting choice from Basic, FA, LB, TC, FTC, TCM1, or TCM2. A plain SEJ does not hold position on air loss; the cushions and stop screw only set the mechanical end and decelerate the load, so specify a BSED or external rod lock for fail-safe holding.
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 SEJ63X150-10S FAQ
A stop screw on the back rod mechanically shortens the retract stroke over a 10mm window, giving an effective stroke range of 140-150mm. You dial in the precise end-position on the machine and lock it, avoiding hardware swaps.
Because the rod exits both ends, the 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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