Airtac SAIJ100 Adjustable Cylinder SAIJ100BX90-50
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX90-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 90mm 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
- Stroke90 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX90-50
The AirTAC SAIJ100X90-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster, allowing you to dial back the nominal 90 mm travel by up to 50 mm. This creates a highly versatile 40-90 mm usable stroke window, perfect for dialing in exact end positions during machine commissioning without adding external stops. It delivers substantial thrust, providing 5497 N of push force at 0.7 MPa.
This specific configuration features a SUS304 stainless steel rod for superior corrosion resistance and includes PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, ready for CMSE reed or DMSE electronic switches if a magnet is added later. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX90-50 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX90-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 90 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 SAIJ100BX90-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×90 | 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 SAIJ100BX90-50 Is Used
Machine Commissioning
Fine-tune the 40-90 mm travel window during initial setup to achieve exact positioning without machining custom spacers.
Product Changeover
Quickly adjust the end-stop to accommodate varying product sizes on a single line, minimizing downtime between runs.
Variable End-Stop Actuation
Provide adaptable push-off force up to 7068 N at 0.9 MPa for packaging or assembly fixtures requiring flexible stroke lengths.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX90-50 the Right Cylinder?
Choose this 100 mm bore when an 80 mm cylinder lacks the necessary force, as stepping up from the 80 mm bore (3518 N push at 0.5 MPa) to this 100 mm bore yields 3927 N at the same pressure. An adjustable stroke is selected over a fixed SAI when a process requires variable end-stops or frequent product changeovers. To match this ISO 15552 replacement exactly, specify a 100 mm bore, 90 mm stroke, 50 mm adjustment, PT ports, and the SUS304 (B) rod material.
Because the rear adjuster acts only as a travel stop and the air cushions handle deceleration, neither will hold a load without live air pressure. For dead-air load holding, consider an external rod lock or AirTAC SAIL and BSAI series cylinders. While the 25 mm rod and M20x1.5 thread handle high side loads well, any application approaching the 1500 mm max standard stroke requires an external guide to prevent rod binding.
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 SAIJ100BX90-50 FAQ
At an operating pressure of 0.7 MPa, this 100 mm bore cylinder provides 5497 N of push force and 5140 N of pull force. At 0.9 MPa, the push force increases to 7068 N.
The rear adjusting screw acts as a mechanical stop that allows you to trim the effective travel back from the 90 mm nominal stroke down to as little as 40 mm. This provides a 50 mm adjustment window for precise end-position tuning at commissioning.
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