Airtac SAIJ40 Adjustable Cylinder SAIJ40AX950-100
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40AX950-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 950mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ40 mm
- Stroke950 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX950-100
The AirTAC SAIJ40X950-100 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 850-950 mm. Delivering 879 Newtons of pull force at 0.7 MPa, it handles substantial load movement while allowing precise end-position tuning. The extended 950 mm stroke exceeds the standard catalog maximum but remains within the 1200 mm manufacturing limit for this bore.
This configuration features a SUS420J2 stainless steel piston rod (option A) for enhanced corrosion resistance and pairs with PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of position switches. The rear adjuster acts purely as a mechanical stop to trim the stroke, meaning it does not lock the load or hold position without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40AX950-100 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40AX950-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 950 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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, 30 mm |
| Max stroke | Up to 1200 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ40 Adjustable Cylinder SAIJ40AX950-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×950 | 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 SAIJ40 Adjustable Cylinder SAIJ40AX950-100 Is Used
Product Changeover
Dial in the exact 850 to 950 mm end-stop for different package sizes on a packaging line without replacing the cylinder.
Long-Stroke Positioning
Move components across a 950 mm span while using the rear screw to fine-tune the final deceleration point during machine setup.
Extended Transfer
Push workpieces down a long conveyor belt, adjusting the travel limit on the fly to accommodate varying pallet dimensions.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX950-100 the Right Cylinder?
Choose this adjustable-stroke model when your equipment requires exact end-position calibration during commissioning or frequent product-size changeovers, avoiding the need to physically swap out a fixed-stroke SAI cylinder. If your application demands higher thrust, stepping up to a 50 mm bore yields 1374 Newtons of push force at 0.7 MPa. Conversely, scaling down to a 32 mm bore provides 563 Newtons for lighter duties.
Because the 950 mm stroke creates a long unsupported rod extension, an external guide is strongly recommended to prevent excessive side-loading and premature seal wear. To replace this cylinder with an equivalent ISO 15552 unit, match the 40 mm bore, 950 mm stroke, 100 mm adjustment range, PT port threads, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, 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 SAIJ40 Adjustable Cylinder SAIJ40AX950-100 FAQ
At 0.7 MPa operating pressure, this 40 mm bore cylinder generates 879 Newtons of push force and 528 Newtons of pull force. The maximum allowable operating pressure is 1.0 MPa.
The rear adjusting screw acts as a mechanical stop that lets you shorten the effective stroke from 950 mm down to as little as 850 mm. This adjuster only sets the travel end and does not function as a lock; live air pressure is required to hold the load.
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