Airtac SAIJ40 Adjustable Cylinder SAIJ40BX700-10
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX700-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 700mm 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
- Stroke700 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX700-10
The AirTAC SAIJ40X700-10 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel by up to 10 mm. This creates a precise 690-700 mm usable window, enabling exact end-position calibration at commissioning without swapping out the cylinder or adding external stops. It delivers a solid 628 N push force at 0.5 MPa, making it well-suited for moderate-load positioning tasks.
This variant incorporates a SUS304 stainless steel piston rod for superior corrosion resistance and is fitted with PT tapered ports. It retains the standard SAI extruded aluminum barrel with sensor grooves on both sides, though it omits the magnet option. The rear adjuster functions purely as a mechanical stop to set the travel end and deceleration point alongside the air cushions; it does not hold the load without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX700-10 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX700-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 700 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 SAIJ40BX700-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×700 | 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 SAIJ40BX700-10 Is Used
Machine Setup & Changeover
Dial in the exact 690-700 mm end position during machine commissioning or product changeover without machining new stop blocks.
Variable End-Stop Positioning
Fine-tune the retract stroke on the fly for assemblies requiring precise 10 mm adjustments to accommodate varying part tolerances.
Long-Stroke Material Handling
Utilize the 700 mm travel for pushing or diverting loads on a conveyor line, with the rear screw allowing quick timing adjustments.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX700-10 the Right Cylinder?
Choose this 40 mm bore when you need more thrust than a 32 mm bore (which provides 402 N push at 0.5 MPa) but want a lighter footprint than the 63 mm class (1559 N). The adjustable stroke is ideal for machine setups requiring variable end-stops or product-size changeovers, whereas a fixed SAI cylinder is better for rigid, unchanging repeat positions. Because the nominal stroke is 700 mm, the 16 mm diameter rod and M12x1.25 thread will carry a decent side load, but an external guide is still recommended for such a long unsupported length to prevent rod bending.
For load-holding applications without continuous live air pressure, this cylinder is not a lock; the rear adjuster only acts as a travel stop. You would need to look at the SAIL (air-released lock) or BSAI (clamp-lock) series instead. This SAIJ model is dimensionally interchangeable per ISO 15552 mounting interfaces and supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR).
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 SAIJ40BX700-10 FAQ
At 0.5 MPa, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. At the maximum operating pressure of 1.0 MPa, it delivers up to 128 kgf.
The rear adjusting screw acts as a stopper that lets you shorten the 700 mm nominal stroke by up to 10 mm, creating a 690-700 mm usable travel window. It sets the end position but does not lock the load without live air.
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