Airtac SAIJ100 Adjustable Cylinder SAIJ100X300-75S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X300-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 300mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ100 mm
- Stroke300 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X300-75S
The AirTAC SAIJ100X300-75-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers a robust 5497N of push force at 0.7 MPa and provides a usable travel window of 225 to 300 mm, allowing you to dial back the 300 mm nominal stroke by up to 75 mm during commissioning. This built-in stopper lets you fine-tune end positions on the fly without swapping the cylinder or adding external stops.
Equipped with a -S magnet, this unit supports AirTAC CMSE reed and DMSE solid-state sensors housed in the dual-side extruded aluminum barrel grooves. The 25 mm carbon steel rod and M20x1.5 thread offer high side-load resilience, though the 300 mm length means an external guide is still recommended for heavy loads. It features PT tapered ports (G1/2) and variable air cushions at both ends to decelerate the motion.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X300-75S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X300-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 300 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 36 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100X300-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×300 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAIJ100 Adjustable Cylinder SAIJ100X300-75S Is Used
Product Changeover Adjustment
Quickly re-tune the 225 to 300 mm travel window during format size changes on packaging lines without replacing the cylinder.
Variable End-Stop Positioning
Set precise rear end-positions for pusher assemblies on conveyors, using the 75 mm adjuster to accommodate different carton lengths.
Machine Commissioning Setup
Fine-tune the final retracted position during initial machine build, avoiding the need to bolt on external mechanical stops.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X300-75S the Right Cylinder?
Choose this 100 mm bore when a 63 mm cylinder (2182N push at 0.7 MPa) is too weak but an 80 mm bore (3518N) leaves insufficient safety margin. The 75 mm adjustment range is ideal for production lines running multiple product sizes, as the end-stop can be quickly reconfigured during changeover rather than mechanically disassembling the fixed-stroke SAI equivalent. Specify your PT port threads, mounting choice (Basic, FA, LB, TC, FTC, TCM1, TCM2), and the -S magnet option to match your setup.
Because the nominal stroke is 300 mm, an external guide rail is recommended to prevent rod binding under high side loads. Remember that the rear adjuster and air cushions act as travel stops and deceleration devices, not brakes; they will not hold a load without live air pressure. For true load-holding, select the SAIL pneumatic lock or BSAI clamp-lock series instead.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X300-75S FAQ
The rear adjuster screw acts as a mechanical stop that shortens the 300 mm nominal stroke by up to 75 mm, giving an effective travel window of 225 to 300 mm. It is a travel stop, not a lock, and does not hold the load without continuous air pressure.
At 0.7 MPa operating pressure, it provides 5497N of push force and 3681N of pull force. It can reach a maximum push force of 7068N at 0.9 MPa.
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