Airtac SAIJ160 Adjustable Cylinder SAIJ160X120-40S
The AirTAC Airtac SAIJ160 Adjustable Cylinder SAIJ160X120-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø160mm bore and 120mm stroke, G3/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ160 mm
- Stroke120 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ160 Adjustable Cylinder SAIJ160X120-40S
The AirTAC SAIJ160X120-40-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 80 to 120 mm, allowing you to dial back the 120 mm nominal stroke by up to 40 mm during commissioning. Delivering 9425 N of pull force at 0.5 MPa, it is built for heavy-duty positioning. The extruded aluminum barrel includes sensor grooves on both sides, and this version includes a magnet for CMSE reed and DMSE electronic switches.
This large-bore actuator uses a 40 mm carbon steel rod with an M36x2 thread, providing high rigidity against side loads. It carries PT tapered port threads and relies on 50 mm air cushions at both ends to decelerate the heavy moving mass. The rear stopper fine-tunes the retract end position without requiring you to swap the cylinder or bolt on external stops, though it does not hold the load without live air pressure.
Airtac SAIJ160 Adjustable Cylinder SAIJ160X120-40S Technical Specifications
| Model | Airtac SAIJ160 Adjustable Cylinder SAIJ160X120-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø160 mm |
| Stroke | 120 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 50 mm |
| Max stroke | Up to 1500 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 (Ø160mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 10053 N | 9425 N |
| 0.7 MPa | 14074 N | — |
| Max (@1.0 MPa) | 2050 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ160 Adjustable Cylinder SAIJ160X120-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 160 | Bore size in mm. |
| ×120 | 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 SAIJ160 Adjustable Cylinder SAIJ160X120-40S Is Used
Product Size Changeovers
Quickly reposition the retract end-stop within the 80-120 mm window when switching machinery to handle a different product length, avoiding physical cylinder swaps.
Heavy Pressing Operations
Leverage the 14074 N push force at 0.7 MPa for high-tonnage pressing or forming tasks, using the 50 mm air cushions to absorb the impact at the end of travel.
Commissioning End-Tuning
Fine-tune the exact retract position during machine setup by turning the rear adjuster screw, ensuring perfect alignment without adding external mechanical stops.
Is the Airtac SAIJ160 Adjustable Cylinder SAIJ160X120-40S the Right Cylinder?
Choose this 160 mm bore actuator when your application requires substantial thrust, yielding 14074 N push at 0.7 MPa. If you need less force, stepping down to a 125 mm bore provides 5734 N pull at 0.5 MPa, while moving up to a 200 mm bore yields 15080 N pull. The adjustable 40 mm travel window is ideal for product changeovers on a line, letting you set variable end-stops on the fly instead of relying on a fixed-stroke SAI cylinder.
For load-holding without continuous air pressure, note that this SAIJ rear adjuster acts only as a travel stop, not a lock; you should look at the SAIL or BSAI series for secure clamping. This model is dimensionally interchangeable per ISO 15552. To match this replacement exactly, configure the 160 mm bore, 120 mm stroke, 40 mm adjustment, PT ports, Basic/LB/TC mounting, 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 SAIJ160 Adjustable Cylinder SAIJ160X120-40S FAQ
It uses a rear adjusting screw that lets you shorten the effective stroke by up to 40 mm. This creates a usable travel window of 80 to 120 mm, allowing precise end-position tuning at commissioning without changing the cylinder itself.
At a 0.5 MPa operating pressure, it provides 10053 N of push force and 9425 N of pull force. At 0.7 MPa, the push force increases to 14074 N.
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