Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-30S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 55mm 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
- Stroke55 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-30S
The AirTAC SAIJ100X55-30-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It delivers 5497N of push force at 0.7 MPa and provides a usable travel window of 25 to 55 mm, letting you dial in the exact end position during commissioning. This model includes a SUS304 stainless steel rod for corrosion resistance and a built-in magnet for position sensing.
Equipped with PT tapered ports and a G1/2 connection, this unit runs at speeds from 30 to 800 mm/s. The rear adjuster acts purely as a mechanical stop to set deceleration and cannot hold a load without live air pressure. For load-holding requirements without continuous air, consider the SAIL or BSAI series instead.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-30S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 55 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 SAIJ100BX55-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×55 | 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 SAIJ100BX55-30S Is Used
Precision End-Stop Tuning
Dial in the exact clamping position within a 25-55mm window during machine commissioning without adding external mechanical stops.
Product Changeover
Quickly adjust the rear stopper to accommodate varying product lengths on a conveyor line, minimizing downtime between runs.
High-Force Positioning
Leverage 5497N of push force at 0.7 MPa to move and position heavy assemblies while fine-tuning the final travel distance.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-30S the Right Cylinder?
Select this 100mm bore cylinder when an application requires substantial thrust—up to 5497N at 0.7 MPa—combined with variable end-stop positioning. If your setup needs less force, stepping down to an 80mm bore yields 3518N at 0.7 MPa, whereas heavier demands might require a 125mm bore providing 8590N. The adjustable stroke is ideal for machine setups requiring frequent product-size changeovers, avoiding the need to physically swap out a fixed-stroke SAI cylinder.
When replacing an ISO 15552 cylinder, match the 100mm bore, 55mm nominal stroke, 30mm adjustment range, PT port thread, and the -S magnet option. The SAIJ supports a specific mounting subset including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR brackets. Since the 55mm stroke is relatively short, side-load risks are minimal, but always ensure standard alignment to prevent rod wear.
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 SAIJ100BX55-30S FAQ
At 0.7 MPa operating pressure, this 100mm bore cylinder generates 5497N of push force and 3681N of pull force. It can reach a maximum push force of 7068N at 0.9 MPa.
The rear adjuster screw allows you to trim the effective travel back by up to 30mm from the 55mm nominal stroke. This creates a usable travel window of 25 to 55mm, acting as a mechanical stop to fine-tune the end position without swapping cylinders.
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