Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-40S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 275mm 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
- Stroke275 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-40S
The AirTAC SAIJ100X275-40-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 275 mm stroke that can be fine-tuned backward by up to 40 mm, giving operators a usable travel window of 235-275 mm to dial in exact end positions during commissioning. In the 100 mm bore class, it generates 3927 N of push force and 3681 N of pull force at 0.5 MPa. The extruded aluminum barrel features sensor grooves on both sides, and because this unit includes the -S magnet option, it is fully compatible with AirTAC CMSE reed and DMSE electronic solid-state switches for precise position detection.
This model uses a carbon steel piston rod and PT tapered port threads. The rear adjuster acts purely as a mechanical stop to set the retraction end position and deceleration point alongside the adjustable air cushions; it does not hold the load without live air pressure. For applications requiring true position holding without continuous pneumatic pressure, the SAIL pneumatic lock or BSAI clamp-lock series should be specified instead.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 275 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 SAIJ100X275-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×275 | 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 SAIJ100X275-40S Is Used
Machine Changeover
Dial in the 235-275 mm travel window during product size transitions without replacing the actuator or adding external stopper blocks to the machine frame.
End-Position Tuning
Fine-tune the retract stroke at commissioning using the rear adjuster to perfect the seating of a 3927 N press or clamping operation.
Assembly Line Indexing
Adjust the stroke length on the fly to accommodate varying part widths on an assembly conveyor, utilizing the -S magnet with DMSE sensors for confirmation.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-40S the Right Cylinder?
Choose this 100 mm bore adjustable-stroke cylinder when your machine setup requires variable end-stops or frequent product-size changeovers without physically swapping out the actuator. The built-in 40 mm adjustment window allows you to trim the 275 mm stroke down to a 235 mm minimum on the fly, which is far more efficient than machining external stopper blocks. If your force requirements are lower, stepping down to an 80 mm bore yields 2513 N of push force at 0.5 MPa while saving envelope space; conversely, moving up to a 125 mm bore provides 6136 N for heavier payloads.
When replacing an ISO 15552 cylinder, verify the 100 mm bore, 275 mm stroke, 40 mm adjustment range, PT port threads, and the required mounting accessory from the SAIJ subset (Basic, FA, LB, TC, FTC, TCM1, TCM2). Because the 275 mm stroke is moderately long, an external guide should be used to support the load and prevent excessive side-loading on the 25 mm carbon steel rod.
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 SAIJ100X275-40S FAQ
At 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. The standard operating speed range is 30-800 mm/s.
The rear adjusting screw acts as a mechanical stopper that allows you to shorten the effective travel from the 275 mm nominal stroke down to 235 mm. It sets the end position and deceleration point but does not lock or hold the load without continuous air pressure.
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