Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-40S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 270mm 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
- Stroke270 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-40S
The AirTAC SAIJ100X270-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 230 to 270 mm. Built with a SUS304 stainless steel rod and an integrated magnet, it generates a substantial 7068 N of push force at 0.9 MPa, making it suitable for heavy-duty positioning tasks.
This model features PT tapered port threads (G1/2) and variable air cushions at both ends to manage kinetic energy. The rear adjuster acts purely as a mechanical stop to fine-tune the end position during commissioning; it does not lock the load, meaning continuous air pressure is required to hold position.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 270 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 SAIJ100BX270-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×270 | 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 SAIJ100BX270-40S Is Used
Product Changeovers
Dial in the 230-270 mm travel window during format changes to accommodate different product sizes without replacing hardware.
Heavy Clamping
Leverage the 7068 N push force at 0.9 MPa to securely clamp heavy materials while fine-tuning the final contact position.
Machine Setup
Use the rear mechanical stop to precisely set end-of-stroke positions during initial machine commissioning.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-40S the Right Cylinder?
Choose this 100 mm bore when a 63 mm cylinder (delivering 2805 N push at 0.9 MPa) cannot provide enough force, but a 125 mm bore is physically too large. The 40 mm adjustment range is ideal for product changeovers on a line, allowing you to shift the end-stop without swapping out the entire cylinder or adding external stops. For load-holding without live air pressure, consider an AirTAC SAIL or BSAI cylinder instead.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 270 mm stroke, 40 mm adjustment, PT port threads, and the -S magnet requirement. Because the 270 mm stroke is moderately long, ensure external guiding is used to prevent excessive side-loading on the SUS304 rod. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ100BX270-40S FAQ
At an operating pressure of 0.9 MPa, this 100 mm bore cylinder provides a push force of 7068 N and a pull force of 3681 N.
The rear adjuster allows you to mechanically shorten the nominal 270 mm stroke by up to 40 mm, creating a usable travel window of 230 to 270 mm. It acts as a travel stop and does not lock the load without air pressure.
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Standard models usually ship in 3-4 days.
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