Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-50
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-50 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 SAIJ100BX275-50
The AirTAC SAIJ100X275-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the nominal 275 mm travel back by up to 50 mm. This creates a usable 225-275 mm end-position window, enabling rapid product changeovers without swapping the barrel or adding external stops. It delivers a robust 5497 N push force at 0.7 MPa, making it suitable for heavy-duty positioning tasks.
This SKU is configured with a SUS304 stainless steel rod (option B) for superior corrosion resistance and includes PT tapered port threads. The extruded aluminum barrel provides standard sensor grooves on both sides for drop-in CMSE or DMSE switches. Mounting options are limited to the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-50 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-50 |
|---|---|
| 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 SAIJ100BX275-50
| 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 SAIJ100BX275-50 Is Used
Variable End-Stop Tuning
Dial in the exact 225 to 275 mm travel distance during machine commissioning to accommodate varying product lengths without installing physical shims.
Heavy-Duty Changeover
Leverage the 5497 N push force at 0.7 MPa to shift heavy pallets or fixtures, adjusting the rear stop screw quickly when switching production lines.
Corrosive Environment Actuation
Utilize the SUS304 stainless steel rod for reliable performance in washdown or mildly corrosive manufacturing areas requiring precise stroke limits.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-50 the Right Cylinder?
Select this 100 mm bore cylinder when a 63 mm bore (2182 N push at 0.5 MPa) lacks the power for high-inertia loads, but an 80 mm bore (3518 N push at 0.5 MPa) is still too small for your 0.7 MPa system requirements. The adjustable stroke is ideal for commissioning fine-tune adjustments where the exact end-stop varies by product batch. Because the 275 mm stroke exceeds 300 mm? No, but for any stroke over 300 mm you would need an external guide; here, the 25 mm rod and M20x1.5 thread handle moderate side loads well.
Remember that the rear adjuster acts only as a travel stop and the air cushions manage deceleration; neither will hold a load without live air pressure. For true load-holding without continuous air, use an external rod lock or choose an AirTAC SAIL or BSAI cylinder. To match this ISO 15552 replacement, verify the 100 mm bore, 275 mm stroke, 50 mm adjustment, PT G1/2 port, and your preferred mounting bracket.
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 SAIJ100BX275-50 FAQ
The rear adjuster screw lets you shorten the effective travel by up to 50 mm from the nominal 275 mm stroke, providing a 225-275 mm usable window. It acts as a mechanical stop to set the end position and does not lock the load without live air pressure.
At an operating pressure of 0.7 MPa, this 100 mm bore double-acting cylinder generates 5497 N of push force and 5181 N of pull force. It can safely operate up to a maximum pressure of 1.0 MPa.
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