Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-40S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-40S 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 SAIJ100BX275-40S
The AirTAC SAIJ100X275-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling a usable travel window of 235 to 275 mm. Delivering 7068 N of push force at 0.9 MPa, it handles heavy-duty positioning with precision. The integrated -S magnet supports position sensing via AirTAC CMSE reed and DMSE electronic switches fitted into the dual-side sensor grooves.
This unit features a SUS304 stainless steel rod (option B) for superior corrosion resistance and uses a PT tapered port. The rear adjuster acts purely as a mechanical stop to fine-tune end positions during commissioning; it does not lock the load. For load-holding without live air pressure, an external rod lock or related AirTAC SAIL/BSAI series is required.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-40S |
|---|---|
| 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 SAIJ100BX275-40S
| 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 SAIJ100BX275-40S Is Used
Product Changeover Dials
Adjusts the retract end-position on the fly during format size changes on packaging lines, utilizing the 40 mm travel window.
Machine Setup Tuning
Fine-tunes the stroke during initial commissioning to dial in exact contact forces without machining external stoppers.
Heavy Assembly Positioning
Leverages the 7068 N push force at 0.9 MPa to move heavy jigs into place while stopping precisely via the rear adjuster.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-40S the Right Cylinder?
Choose this 100 mm bore when the 80 mm variant (providing 4523 N push at 0.9 MPa) lacks sufficient thrust, but the 125 mm bore (11045 N) would be physically oversized. The 40 mm adjustment range is ideal for product changeovers, allowing you to dial in the exact end-stop without swapping the cylinder or adding external stops. Unlike a fixed-stroke SAI, this SAIJ variant provides a 235-275 mm window for on-the-fly commissioning tuning.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 275 mm nominal stroke, 40 mm adjustment, PT G1/2 port, and Basic/FA/LB/TC/FTC/TCM1/TCM2 mounting interface. Because the 275 mm stroke is moderately long, ensure proper external guiding to prevent side-load damage to the M20x1.5 rod thread.
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 SAIJ100BX275-40S FAQ
At an operating pressure of 0.9 MPa, this 100 mm bore cylinder generates 7068 N of push force and 6619 N of pull force. It can deliver a maximum of 801 kgf at 1.0 MPa.
The rear adjusting screw acts as a mechanical stop that lets you shorten the effective travel from 275 mm down to 235 mm. This allows precise end-position tuning during commissioning without replacing the cylinder.
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