Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-50
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 1000mm 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
- Stroke1000 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-50
The AirTAC SAIJ40X1000-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel window down to 950-1000 mm. Delivering 628 N of push force at 0.5 MPa, it uses a 16 mm carbon steel piston rod with an M12x1.25 thread. This specific configuration incorporates a SUS304 stainless steel rod (option B) for superior corrosion resistance, alongside PT tapered port threads.
Because the nominal 1000 mm stroke is near the maximum standard limit for this bore, the external adjuster provides crucial flexibility for end-position tuning without swapping hardware. The extruded aluminum barrel includes sensor grooves on both sides, and the rear stopper acts purely as a travel limiter and deceleration point—it does not hold the load without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-50 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 1000 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 SAIJ40BX1000-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×1000 | 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 SAIJ40BX1000-50 Is Used
Machine Changeover
Dial in the 950-1000 mm travel window during product size changes without physically swapping the cylinder or adding external mechanical stops.
End-Position Tuning
Fine-tune the retract stroke at commissioning to compensate for mechanical tolerances across long 1000 mm assemblies.
Corrosive Environments
Leverage the SUS304 stainless steel rod option for reliable actuation in washdown or mildly corrosive industrial settings.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-50 the Right Cylinder?
Choose this adjustable model over a fixed SAI cylinder when your setup requires variable end-stops or precise commissioning tweaks across a 950-1000 mm range. If your application requires less force, stepping down to a 32 mm bore yields 402 N at 0.5 MPa; if you need more power, a 50 mm bore provides 982 N. At 1000 mm of travel, the 16 mm rod is susceptible to deflection under side loads, so an external guide is strongly recommended to prevent premature seal wear.
To replace an existing ISO 15552 cylinder, match the 40 mm bore, 1000 mm stroke, 50 mm adjustment, PT G1/4 ports, and your required mounting interface. SAIJ supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, intentionally omitting FB, CA, CB, and CR brackets. Remember that the rear adjuster is a stop, not a lock; for load-holding without live air, consider an AirTAC SAIL or BSAI cylinder.
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 SAIJ40BX1000-50 FAQ
The rear adjuster screw lets you shorten the effective travel by up to 50 mm, creating a usable stroke window of 950-1000 mm. It acts as a physical stop and deceleration point, but does not lock or hold the load without continuous air pressure.
At 0.5 MPa, the 40 mm bore generates 628 N of push force and 528 N of pull force. The standard speed range for this bore size is 30-800 mm/s.
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