Airtac SAIJ40 Adjustable Cylinder SAIJ40BX700-100
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX700-100 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 SAIJ40BX700-100
The AirTAC SAIJ40X700-100 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel anywhere within a 600-700 mm window. It delivers 879 N of push force at 0.7 MPa, making it well-suited for moderate-load positioning tasks. The extruded aluminum barrel includes sensor grooves on both sides, and this configuration uses a SUS304 stainless steel rod for superior corrosion resistance.
This model features PT tapered ports and omits external tie-rods for a clean profile. The rear adjustment screw acts purely as a mechanical stop to set the end position during commissioning; it does not lock or hold the load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX700-100 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX700-100 |
|---|---|
| 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 SAIJ40BX700-100
| 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 SAIJ40BX700-100 Is Used
Variable End-Stop Positioning
Dial in the exact 600 to 700 mm retraction point on a conveyor sorting arm during product changeovers without adding external physical stops.
Commissioning Fine-Tuning
Use the rear adjuster screw to perfectly trim the travel end-position during machine setup, absorbing minor mechanical tolerances in the layout.
Long-Stroke Ejection
Execute long-distance part ejection from a press while retaining the ability to shorten the stroke by up to 100 mm if the downstream chute distance changes.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX700-100 the Right Cylinder?
Choose this adjustable-stroke model when your machine setup requires variable end-stops or frequent product-size changeovers without physically swapping the cylinder. If your application needs less force, stepping down to a bore 32 unit provides 563 N at 0.7 MPa; stepping up to a bore 50 cylinder yields 1374 N at 0.7 MPa for heavier payloads.
Because the 700 mm stroke is substantial, the 16 mm diameter rod and M12x1.25 thread will still experience deflection under lateral stress; an external guide rail is highly recommended to prevent premature wear. This cylinder is dimensionally interchangeable with ISO 15552 cylinders and supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and 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 SAIJ40BX700-100 FAQ
At a standard 0.7 MPa operating pressure, the SAIJ40X700-100 generates 879 N of push force and 528 N of pull force. It can safely operate up to a maximum pressure of 1.0 MPa.
The rear adjuster screw lets you mechanically shorten the 700 mm nominal stroke by up to 100 mm, providing an effective usable travel window of 600 to 700 mm. This stopper only sets the travel end and decelerates the load; it does not lock or hold the cylinder position without continuous air pressure.
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