Airtac SEJ Adjustable Cylinder SEJ100X75-30
The AirTAC Airtac SEJ Adjustable Cylinder SEJ100X75-30 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 Ø100mm unit covers an effective stroke of 45–75mm without changing cylinders. Force is equal in both directions.
- BoreØ100 mm
- Nominal stroke75 mm
- Adjust window30 mm
- Effective stroke45–75 mm
- Port sizePT1/2
- 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 SEJ100X75-30
The AirTAC SEJ100X75-30 is a double-acting, double-rod ISO 15552 profile cylinder with a 30mm adjustable stroke window, yielding an effective stroke range of 45-75mm. A rod exits both ends, creating equal annulus areas. This guarantees identical force and speed in both directions, delivering 3681N each way at 0.5 MPa and 5153N at 0.7 MPa.
You dial in the exact retract end-position using a stop screw on the back rod, then lock it down. This cylinder lacks a magnet (-S), so it has no position sensing on this SKU. It features field-adjustable air cushions at both ends to manage deceleration across its 30-800mm/s speed range.
Airtac SEJ Adjustable Cylinder SEJ100X75-30 Technical Specifications
| Model | Airtac SEJ Adjustable Cylinder SEJ100X75-30 |
|---|---|
| Series | SEJ ISO 15552 adjustable-stroke cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 75 mm |
| Adjustment window | 30 mm (45–75 mm) |
| Configuration | Double rod, double acting |
| Port size | PT1/2 |
| Rod thread | M20×1.5 |
|---|---|
| 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 30mm window. Port options: PT (standard) / G (BSPP).
Theoretical Output Force (Ø100mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 3682 N |
| 0.7 MPa | 5154 N |
| Max (@1.0 MPa) | 751 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 SEJ100X75-30
| SEJ | ISO 15552 double-rod double-acting cylinder with adjustable stroke. |
|---|---|
| 100 | 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 SEJ100X75-30 Is Used
Press Die Changeover
Dial the 30mm retract window to accommodate varying die heights during production changeover, using the 5153N both-way force to shift heavy lower bolsters.
Assembly Clamp Commissioning
Fine-tune the 45-75mm effective stroke on-site to set the exact clamping force against machined engine blocks without reprogramming machine logic.
Material Guide Positioning
Adjust the mechanical stop to dial in the exact edge-guide distance for varying sheet metal widths on a conveyor line, leveraging equal push and pull.
Is the Airtac SEJ Adjustable Cylinder SEJ100X75-30 the Right Cylinder?
This 30mm adjustment window is ideal for dialing in precise end-stops during machine commissioning or matching varying part heights without swapping hardware. If you need less force, the adjacent bore down is 80mm, providing 2268N both ways at 0.5 MPa. If your application demands more push, the next size up is 125mm, yielding 5734N at 0.5 MPa. Because the effective stroke is 45-75mm, a fixed-stroke SED cylinder might suffice if no future changeover is expected. For a drop-in ISO 15552 replacement, verify the 100mm bore, 75mm nominal stroke, PT1/2 port, and your required mounting style (Basic, FA, LB, TC, FTC, TCM1, or TCM2).
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 SEJ100X75-30 FAQ
A stop screw on the back rod lets you shorten the retract stroke by up to 30mm. The effective stroke range is 45-75mm. You set the exact end-position mechanically on the machine, then lock the screw.
Because it is a double-rod cylinder, the force is equal in both directions. It provides 3681N at 0.5 MPa, 5153N at 0.7 MPa, and a maximum of 751 kgf at 1.0 MPa.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SEJ Cylinders
Request a Quote for Airtac SEJ Adjustable Cylinder SEJ100X75-30
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.