Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-50
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 400mm 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
- Stroke400 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-50
The AirTAC SAIJ100X400-50 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 400 mm travel that can be dialed back by up to 50 mm, yielding a usable 350-400 mm adjustable window. This allows precise end-position tuning during commissioning without swapping the cylinder or adding external stops.
Delivering 7068 N of push force at 0.9 MPa, it handles heavy loads with a 25 mm carbon steel rod and M20x1.5 thread. The extruded aluminum barrel includes sensor grooves on both sides for CMSE or DMSE switches, though this non-magnet version requires adding the -S suffix for position sensing.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-50 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 400 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 SAIJ100X400-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×400 | 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 SAIJ100X400-50 Is Used
Machine Setup Changeover
Fine-tune the 350-400 mm travel window during product line changeovers to accommodate varying package sizes without mechanical rebuilds.
Heavy Material Handling
Leverage the 7068 N push force at 0.9 MPa to shift heavy workpieces, using the rear screw to dial in the exact transfer end-stop.
Variable End-Stop Positioning
Dial back the stroke by up to 50 mm during commissioning to perfectly align press tools or indexing pins without external stopper blocks.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-50 the Right Cylinder?
Selecting this 100 mm bore over the 80 mm version steps the thrust up from 4523 N to 7068 N at 0.9 MPa, while dropping down to a 63 mm bore reduces it to 2805 N. The adjustable stroke is ideal for machine setups requiring variable end stops or frequent product-size changeovers. Because the 400 mm stroke is substantial, an external guide is recommended to manage side loads on the 25 mm rod.
The rear adjuster acts purely as a travel stop to set deceleration; it does not hold the load without live air. For position-holding without pneumatic pressure, use a SAIL lock, BSAI clamp-lock, or an external rod lock. To match this ISO 15552 replacement exactly, specify the 100 mm bore, 400 mm stroke, 50 mm adjustment, PT port thread, and your required mounting from the SAIJ set: Basic, FA, LB, TC, FTC, TCM1, or TCM2.
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 SAIJ100X400-50 FAQ
At an operating pressure of 0.9 MPa, this 100 mm bore cylinder provides 7068 N of push force and 3681 N of pull force. At 0.5 MPa, the push force is 3927 N.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the 400 mm nominal stroke by up to 50 mm. This creates a 350-400 mm usable travel window for fine-tuning end positions at commissioning.
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