Airtac SAIJ100 Adjustable Cylinder SAIJ100BX800-50S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX800-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 800mm 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
- Stroke800 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX800-50S
The AirTAC SAIJ100X800-50-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 7068N push force at 0.9 MPa, utilizing a 25mm SUS304 stainless steel rod and G1/2 ports. The built-in adjuster allows you to trim the effective travel back by up to 50mm, creating a precise 750-800mm usable stroke window without needing external stops.
This configuration includes a piston magnet for position sensing with CMSE reed and DMSE electronic switches. The extruded aluminum barrel features sensor grooves on both sides for flexible mounting. While the adjustable screw sets the retract end-position, remember it functions as a travel stop and not a load lock; for holding loads without live air, consider an external pilot-operated check valve or the SAIL series.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX800-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX800-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 800 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 SAIJ100BX800-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×800 | 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 SAIJ100BX800-50S Is Used
Long-Stroke Machine Setup
Dial in the exact 750-800mm travel window during initial commissioning to accommodate mechanical tolerances over long distances without machining custom spacers.
Product Size Changeovers
Quickly adapt the retract end-position on a packaging line when switching to different product sizes, using the 50mm adjustment range instead of replacing the entire actuator.
Variable End-Stop Positioning
Fine-tune the final end-stop on large fixtures where a fixed 800mm stroke might bottom out, relying on the rear screw rather than adding bulky external mechanical stops.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX800-50S the Right Cylinder?
Choose this 100mm bore when an 80mm cylinder lacks sufficient thrust (the 80mm provides 4523N at 0.9 MPa) or an 125mm unit is too bulky. An adjustable stroke is highly beneficial for machine setups requiring fine-tuning during commissioning or product changeovers, allowing you to dial in the exact 750-800mm travel without swapping the cylinder. Because the nominal stroke is 800mm, the long unsupported rod is susceptible to deflection; an external guide rail is strongly recommended to prevent excessive side-load wear.
When replacing an ISO 15552 cylinder, match the 100mm bore, 800mm stroke, 50mm adjustment, PT tapered port threads, and the -S magnet requirement. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, intentionally omitting FB, CA, CB, and CR brackets to streamline the adjustable rear mechanism.
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 SAIJ100BX800-50S FAQ
At an operating pressure of 0.9 MPa, this 100mm bore cylinder provides a push force of 7068N and a pull force of 3681N. The maximum thrust is 801 kgf at 1.0 MPa.
The rear adjusting screw acts as a stopper that can shorten the nominal 800mm stroke by up to 50mm, providing a usable travel window of 750-800mm. It allows for fine end-position tuning but does not lock the load without live air pressure.
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