Airtac SAIJ40 Adjustable Cylinder SAIJ40AX950-30
The AirTAC SAIJ40 Adjustable Cylinder SAIJ40AX950-30 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ40 mm
- Stroke950 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX950-30
The AirTAC SAIJ40X950-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 920-950 mm usable travel window. The 950 mm stroke approaches the maximum standard range for this bore, making the 30 mm adjustment highly practical for fine-tuning machine setup.
This unit features an SUS420J2 stainless steel rod for improved corrosion resistance compared to standard carbon steel. It uses a PT tapered port thread and operates at speeds of 30-800 mm/s. The extruded aluminum barrel includes sensor grooves on both sides, ready for CMSE reed or DMSE electronic switches if a magnet is specified later.
Airtac SAIJ40 Adjustable Cylinder SAIJ40AX950-30 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40AX950-30 |
|---|---|
| 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 | 528 N | 528 N |
| 0.7 MPa | 739 N | — |
| Max (@1.0 MPa) | 108 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ40 Adjustable Cylinder SAIJ40AX950-30
| 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 SAIJ40AX950-30 Is Used
Long-Stroke Machine Setup
Dial in the 920-950 mm travel window during commissioning to perfectly time a long-axis pusher without machining new hard stops.
Variable End-Position Tuning
Use the 30 mm rear screw to adjust the retract distance on the fly, accommodating minor product length changes on a packaging line.
Corrosive Assembly Lines
Leverage the SUS420J2 stainless steel rod on a 950 mm stroke to push components in environments where standard carbon rods would degrade.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX950-30 the Right Cylinder?
An adjustable stroke is selected over a fixed SAI cylinder when you need variable end-stops or commissioning fine-tuning without adding external stops. The rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding, consider the SAIL or BSAI series.
Because the 950 mm stroke is long, the 16 mm rod and M12x1.25 thread still require an external guide to prevent excessive side-loading and rod deflection. This SAIJ model uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR brackets. It is dimensionally interchangeable per ISO 15552.
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 SAIJ40AX950-30 FAQ
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the 950 mm nominal stroke by up to 30 mm, creating a 920-950 mm usable travel window. It only sets the end position and does not lock the load without continuous air pressure.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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