Airtac SAIJ100 Adjustable Cylinder SAIJ100X70-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X70-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 70mm 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
- Stroke70 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X70-20S
The AirTAC SAIJ100X70-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling you to dial back the 70mm nominal stroke to a precise 50-70mm travel window during commissioning. Fitted with a PT tapered G1/2 port and a robust 25mm carbon steel rod, it delivers 5497N of push force at 0.7 MPa. This variant includes a built-in magnet for position sensing.
Because the adjuster acts as a retract-end stop rather than a lock, live air pressure is still required to hold the load securely. The extruded aluminum barrel features sensor grooves on both sides, allowing you to easily mount CMSE reed or DMSE electronic switches for precise end-of-travel detection without extra brackets.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X70-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X70-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 70 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 SAIJ100X70-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×70 | 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 SAIJ100X70-20S Is Used
Machine Setup & Changeover
Fine-tune the 50-70mm travel window on the fly during product changeovers, eliminating the need to physically swap out cylinders for different sized parts.
Variable End-Stop Tuning
Dial in the exact retract position at commissioning using the rear adjuster, perfect for applications requiring precise end-position calibration without external stops.
Heavy-Duty Positioning
Leverage the 5497N push force at 0.7 MPa to move heavy pallets or tooling, relying on the 25mm rod to handle significant side loads during the motion cycle.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X70-20S the Right Cylinder?
Select this 100mm bore model when your application requires heavy thrust up to 5497N at 0.7 MPa, but you need the flexibility to fine-tune the end position without swapping cylinders or adding external stops. If your force requirements are lower, stepping down to an 80mm bore yields 3518N at 0.7 MPa, whereas moving up to a 125mm bore provides 8590N. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR. For exact ISO 15552 replacement, match the 100mm bore, 70mm stroke, 20mm adjustment, G1/2 port, PT thread, and -S magnet.
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 SAIJ100X70-20S FAQ
At 0.7 MPa operating pressure, this 100mm bore cylinder generates 5497N of push force and 3681N of pull force. It can deliver a maximum push force of 7068N at 0.9 MPa.
The rear adjuster screw acts as a mechanical stop that lets you trim the effective travel back by up to 20mm, creating a 50-70mm usable stroke window. It functions as a travel stop and deceleration point, not a lock, so live air is required to hold the load.
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