Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-50S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 100mm 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
- Stroke100 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-50S
The AirTAC SAIJ40X100-50-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 879 Newtons of push force at 0.7 MPa, making it a robust choice for moderate-duty actuation. The extruded aluminum barrel includes sensor grooves on both sides for straightforward switch placement.
This specific SKU features a SUS304 stainless steel rod and a built-in magnet, allowing seamless integration with AirTAC CMSE reed and DMSE electronic sensors. The 50 mm adjustment code creates a highly versatile 50-100 mm usable travel window, letting you dial in the exact retract end-position during commissioning without swapping hardware.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-50S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 100 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 SAIJ40BX100-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×100 | 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 SAIJ40BX100-50S Is Used
Machine Changeover
Quickly adapt retract distances when swapping product sizes on a packaging line, using the 50 mm adjustment range to avoid physically remounting the cylinder.
End-Position Calibration
Fine-tune the exact bottoming out point during initial commissioning to prevent mechanical crashing, utilizing the rear stopper for precise 50-100 mm travel control.
Variable Forming Stops
Adjust the stroke depth dynamically for different material thicknesses in light pressing or forming applications without adding external stopper blocks.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-50S the Right Cylinder?
Choose this adjustable model when your setup requires on-the-fly end-position tuning across a 50-100 mm travel window. If your application needs less force, the 32 mm bore offers 563 N at 0.7 MPa; stepping up to a 50 mm bore provides 1374 N. Since the nominal stroke is 100 mm, side-loading is minimal, but always guide the load to prevent rod binding.
The rear screw acts purely as a travel stop and works with the variable air cushions to decelerate the piston; it does not hold the load without continuous air pressure. For true load-holding without live air, consider the SAIL pneumatic lock series or an external rod lock. To match this cylinder exactly, specify a 40 mm bore, 100 mm stroke, PT tapered port threads, and the -S magnet option.
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 SAIJ40BX100-50S FAQ
The rear adjuster screw allows you to trim the effective stroke by up to 50 mm. With the 100 mm nominal stroke, this creates a usable travel window of 50-100 mm, letting you set the exact retract position without changing the cylinder.
At 0.7 MPa operating pressure, the SAIJ40X100-50-S provides 879 Newtons of push force and 528 Newtons of pull force. It can reach a maximum push force of 1130 Newtons at 0.9 MPa.
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