Airtac SEJ Adjustable Cylinder SEJ40BX600-10S
The AirTAC SEJ Adjustable Cylinder SEJ40BX600-10S 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 Ø40mm unit covers an effective stroke of 590–600mm without changing cylinders. Force is equal in both directions.
- BoreØ40 mm
- Nominal stroke600 mm
- Adjust window10 mm
- Effective stroke590–600 mm
- Port sizePT1/4
- CushionAdjustable, 30 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 SEJ40BX600-10S
The AirTAC SEJ40BX600-10S is a double-acting, double-rod ISO 15552 profile cylinder featuring a SUS304 stainless steel rod for corrosion resistance. The retract stroke is mechanically adjustable via a back-rod stop screw over a 10 mm window, providing an effective stroke range of 590-600 mm for precise end-position tuning.
This extruded aluminum barrel design includes field-adjustable air cushions at both ends to decelerate the load near stroke end. The integrated magnet (-S) supports CMSE reed and DMSE electronic sensors for position feedback. It operates at speeds from 30-800 mm/s and uses a PT1/4 port with an M12x1.25 rod-end thread.
Airtac SEJ Adjustable Cylinder SEJ40BX600-10S Technical Specifications
| Model | Airtac SEJ Adjustable Cylinder SEJ40BX600-10S |
|---|---|
| Series | SEJ ISO 15552 adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 600 mm |
| Adjustment window | 10 mm (590–600 mm) |
| Configuration | Double rod, double acting |
| Port size | PT1/4 |
| Rod thread | M12×1.25 |
|---|---|
| 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, 30 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 (Ø40mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 528 N |
| 0.7 MPa | 739 N |
| Max (@1.0 MPa) | 108 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 SEJ40BX600-10S
| SEJ | ISO 15552 double-rod double-acting cylinder with adjustable stroke. |
|---|---|
| 40 | Bore size in mm. |
| ×600 | 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 SEJ40BX600-10S Is Used
Washdown Packaging Stops
Dial the 10 mm window to match varying carton heights on packaging lines, leveraging the 739 N retract force and SUS304 rod for wet environments.
Food Conveyor Changeover
Adjust the retract end position precisely when switching between different product profiles on a stainless food-grade conveyor, using equal both-way force.
Is the Airtac SEJ Adjustable Cylinder SEJ40BX600-10S the Right Cylinder?
The 10 mm adjustment window is ideal for commissioning fine-tune applications where you need to match a variable stop or dial in a precise end position on the machine. If you need slightly less force, the next bore down (32 mm) provides 345 N both ways at 0.5 MPa; if you need more power, the next bore up (50 mm) yields 825 N both ways. If your stroke length never changes, a fixed-stroke SED cylinder is sufficient. At a 600 mm stroke, external guides are recommended to prevent side-load wear on the rod seals. Note that the air cushion and stop screw only set the mechanical end and decelerate the load; they do not hold position on air loss. For fail-safe holding, use an external rod lock. This cylinder is dimensionally interchangeable per ISO 15552.
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 SEJ40BX600-10S FAQ
A stop screw on the back rod lets you mechanically shorten the retract stroke over a 10 mm window, giving an effective stroke range of 590-600 mm. You lock it after setting the exact end position.
Because the rod exits both ends, force is identical in both directions: 528 N at 0.5 MPa, 739 N at 0.7 MPa, and a maximum of 108 kgf at 1.0 MPa.
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