Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-75
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-75 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 SAIJ100BX270-75
The AirTAC SAIJ100X270-75 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers a robust 3927N push force at 0.5 MPa, making it suitable for heavy-duty positioning tasks. The integrated rear stopper allows you to fine-tune the effective travel window down from a 270 mm nominal stroke to a 195-270 mm range, providing exact end-position calibration without adding external stops.
This unit is configured with a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE or DMSE switches, though this specific SKU is not magnetized. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, deliberately omitting FB, CA, CB, and CR brackets to streamline the adjustable rear housing.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-75 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-75 |
|---|---|
| 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 SAIJ100BX270-75
| 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 SAIJ100BX270-75 Is Used
Variable End-Stops
Dial in the exact retraction point from 195 to 270 mm during machine commissioning to accommodate different product sizes without swapping cylinders.
Heavy-Duty Positioning
Leverage the 3927N push force at 0.5 MPa to move heavy jigs or tooling plates into precise final positions before a secondary operation.
Changeover Automation
Quickly adjust the stroke length on packaging or assembly lines to handle varying package dimensions on the fly, reducing setup downtime.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-75 the Right Cylinder?
Choose this 100 mm bore when 50 mm (982N) is too weak but 125 mm (6136N) is oversized. An adjustable stroke is ideal for machine setups requiring variable end-stops during product changeovers, unlike a fixed-stroke SAI cylinder. For any stroke at 270 mm, the 25 mm rod handles moderate side loads, but an external guide is recommended for heavy off-center loads. Remember, the rear adjuster is a travel stop, not a lock; for load-holding without live air, select an SAIL or BSAI cylinder. To match this ISO 15552 interchangeable unit, specify the 100 mm bore, 270 mm stroke, 75 mm adjustment, PT port, and mounting style.
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 SAIJ100BX270-75 FAQ
At 0.5 MPa it provides 3927N push and 3681N pull force. At 0.7 MPa, the push force increases to 5497N.
The rear adjuster acts as a mechanical stop that trims the 270 mm nominal stroke back by up to 75 mm, giving an effective travel window of 195-270 mm. It only sets the end position; it does not lock the load.
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