Airtac SAIJ100 Adjustable Cylinder SAIJ100BX250-75S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX250-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 250mm 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
- Stroke250 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX250-75S
The AirTAC SAIJ100X250-75-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers a robust 5497N push force at 0.7 MPa, utilizing a 25mm SUS304 stainless steel rod for superior corrosion resistance and side-load durability. The built-in rear stopper provides a usable travel window of 175 to 250mm, letting you dial in the exact retract position during commissioning without adding external stops.
This adjustable model retains the standard ISO 15552 mounting dimensions and includes a piston magnet for electronic DMSE or reed CMSE position sensing. It features variable air cushions at both ends to manage kinetic energy, though the rear adjuster acts only as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX250-75S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX250-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 250 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 SAIJ100BX250-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×250 | 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 SAIJ100BX250-75S Is Used
Changeover Positioning
Dial in the retract distance instantly on packaging lines that run multiple carton sizes, using the 75mm adjustment window to set precise end stops.
Machining Clamp Travel
Fine-tune the clamping reach on machining fixtures where raw material thickness varies, relying on the 5497N push force to secure heavy workpieces.
Assembly Press Stroke
Adjust the pressing depth on automated assembly stations without disassembling the machinery, leveraging the PT ported ISO 15552 footprint for easy integration.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX250-75S the Right Cylinder?
Choose this SAIJ100X250-75-S variant when your application requires precise end-position tuning over a wide 175 to 250mm range. If your process needs less force, stepping down to an 80mm bore yields 3518N at 0.7 MPa, whereas a 125mm bore provides 8590N for heavier loads. The 75mm adjustment window is ideal for product changeovers on flexible lines, allowing you to reposition the end stop rapidly instead of swapping the entire cylinder for a different fixed-stroke SAI unit.
For a direct ISO 15552 replacement, match the 100mm bore, 250mm stroke, 75mm adjustment, PT port threads, and the -S magnet option. Because the stroke is 250mm, ensure adequate external guiding to prevent excessive side-loading on the 25mm rod. Remember that the rear adjuster is a stop, not a lock; for load-holding without live air, consider an SAIL or BSAI cylinder.
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 SAIJ100BX250-75S FAQ
The rear adjuster screw lets you shorten the effective stroke by up to 75mm. This creates a usable travel window of 175 to 250mm, allowing you to set the exact retract end position during commissioning without changing the cylinder.
At a 0.7 MPa operating pressure, this 100mm bore cylinder provides 5497N of push force and 3681N of pull force. It can deliver a maximum of 7068N push force at 0.9 MPa.
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