Airtac SAIJ40 Adjustable Cylinder SAIJ40BX160-30S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX160-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 160mm 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
- Stroke160 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX160-30S
The AirTAC SAIJ40X160-30-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling you to dial back the nominal 160 mm stroke by up to 30 mm. This yields a usable travel window of 130 to 160 mm, allowing precise end-position tuning at commissioning without swapping the barrel or adding external stops. It delivers 628 N of push force and 528 N of pull force at 0.5 MPa, making it a solid mid-range actuator.
This variant features a SUS304 stainless steel rod for superior corrosion resistance and includes a magnet (-S) for electronic position sensing. The extruded aluminum barrel carries sensor grooves on both sides, compatible with AirTAC CMSE reed and DMSE solid-state switches. The rear adjuster acts purely as a mechanical stop to set the retract position; it does not lock or hold the load without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX160-30S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX160-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 160 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 SAIJ40BX160-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×160 | 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 SAIJ40BX160-30S Is Used
Variable End-Stop Tuning
Dial in the exact 130-160 mm retract position during machine setup, allowing rapid accommodation of different product lengths without external stopper hardware.
Product Changeover
Quickly adjust the effective stroke on packaging lines when switching between package sizes, using the rear screw to fine-tune the final end position.
Corrosive Environment Actuation
Leverage the SUS304 stainless steel rod for pushing and pulling tasks in washdown or mildly corrosive manufacturing environments.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX160-30S the Right Cylinder?
Choose this 40 mm bore when you need higher force than a 32 mm bore (which offers 402 N push at 0.5 MPa) but want a more compact footprint than the 50 mm bore (982 N push). The adjustable 130-160 mm travel window is ideal for product changeovers or variable end-stops, whereas a fixed-stroke SAI cylinder is better for rigid, single-purpose travel. To match this ISO 15552 replacement, verify the 160 mm stroke, 30 mm adjustment, PT tapered port, and SUS304 rod material.
Remember that the rear adjuster and air cushions only decelerate the travel end; they do not hold the load. For true load-holding without live air, select an AirTAC SAIL (pneumatic lock) or BSAI (clamp-lock) cylinder. At 160 mm stroke, side-load risk is minimal, but always ensure the M12x1.25 rod thread is aligned with the load to prevent binding.
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 SAIJ40BX160-30S FAQ
At 0.5 MPa operating pressure, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. At the maximum pressure of 1.0 MPa, it delivers up to 128 kgf.
The rear adjuster screw lets you shorten the 160 mm nominal stroke by up to 30 mm, creating a 130-160 mm travel window. It functions as a mechanical stop to fine-tune the end position; it does not lock the load without air pressure.
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