Airtac SAIJ40 Adjustable Cylinder SAIJ40BX170-10S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX170-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 170mm 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
- Stroke170 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX170-10S
The AirTAC SAIJ40X170-10-S is a double-acting, adjustable-stroke ISO 15552 profile cylinder. It features a 40mm bore and a 170mm nominal stroke, but the integrated rear stopper screw allows you to dial back the travel by up to 10mm. This creates a precise 160-170mm usable stroke window, ideal for fine-tuning end positions at machine commissioning without swapping out components.
Delivering 879N of push force at 0.7MPa, this unit is equipped with a SUS304 stainless steel rod for superior corrosion resistance and external guide compatibility. The extruded aluminum barrel includes sensor grooves on both sides, and because this is the -S variant, it contains a magnet ready for CMSE reed and DMSE electronic solid-state switches. The PT tapered port threads are G1/4, and the mounting interface is dimensionally interchangeable with ISO 15552 cylinders.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX170-10S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX170-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 170 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 SAIJ40BX170-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×170 | 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 SAIJ40BX170-10S Is Used
Machine Commissioning Tuning
Dial in the exact 160-170mm travel window during setup to perfect pressing or clamping depth without machining new hard stops.
Product Changeover
Quickly adjust the rear stopper by up to 10mm on packaging lines when switching between slightly different product sizes.
Conveyor End-Stop Positioning
Fine-tune the physical stopping point for pallets on a transport line, using the 879N push force to halt loads reliably.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX170-10S the Right Cylinder?
Choose this 40mm bore model when your application requires 879N of thrust at 0.7MPa but demands on-the-fly end-position adjustments. If you need less force, the 32mm bore offers 563N at 0.7MPa; for heavier loads, the 50mm bore provides 1374N. The adjustable rear stopper acts purely as a mechanical travel end and does not lock the load. If your machine requires true fail-safe load holding without live air pressure, select the SAIL pneumatic lock or BSAI clamp-lock cylinder instead.
When replacing an ISO 15552 cylinder, match the 40mm bore, 170mm stroke, 10mm adjustment range, G1/4 PT ports, and the -S magnet requirement. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR. Since the stroke is 170mm, ensure an external guide is used to prevent side-loading on the 16mm rod and M12x1.25 rod thread.
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 SAIJ40BX170-10S FAQ
At 0.7MPa operating pressure, this 40mm bore cylinder provides 879N of push force and 528N of pull force. It can reach a maximum of 1130N push force at 0.9MPa.
The rear adjuster screw acts as a mechanical stop that shortens the 170mm nominal stroke by up to 10mm, giving a usable travel window of 160-170mm. It only sets the end position and does not hold the load without live air.
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