Airtac SAIJ40 Adjustable Cylinder SAIJ40BX30-10
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX30-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 30mm 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
- Stroke30 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX30-10
The AirTAC SAIJ40X30-10 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 20-30mm usable travel window, letting you dial back the 30mm nominal stroke by up to 10mm during commissioning. Delivering 628N of push force at 0.5 MPa, it handles compact positioning tasks with precision.
This model uses a SUS304 stainless steel rod and PT tapered port threads. The rear adjuster acts purely as a mechanical stop for end-position tuning; it does not hold the load without live air. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX30-10 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX30-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 30 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 SAIJ40BX30-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×30 | 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 SAIJ40BX30-10 Is Used
Machine Changeover
Quickly fine-tune the 20-30mm travel window during product size changes on a packaging line without adding external stops.
Component Seating
Precisely dial in the end position to seat delicate components accurately, using the rear screw to prevent overtravel.
Stroke Validation
Test and validate exact end-stops during machine commissioning by adjusting the stroke in sub-millimeter increments.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX30-10 the Right Cylinder?
Choose this 40mm bore when you need 628N push force at 0.5 MPa, which is a step up from the 32mm bore's 402N. The adjustable stroke is ideal for machine setups requiring variable end-stops without swapping cylinders. It supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts. Being a short 30mm stroke, side-load risks are minimal, but always ensure linear guidance for optimal seal life.
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 SAIJ40BX30-10 FAQ
The rear adjuster is a mechanical stop that lets you shorten the 30mm nominal stroke by up to 10mm, creating a 20-30mm usable travel window for fine-tuning end positions.
At 0.5 MPa operating pressure, this 40mm bore cylinder provides 628N of push force and 528N of pull force.
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