Airtac SAIJ160 Adjustable Cylinder SAIJ160X125-40S
The AirTAC Airtac SAIJ160 Adjustable Cylinder SAIJ160X125-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø160mm bore and 125mm 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
- Stroke125 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ160 Adjustable Cylinder SAIJ160X125-40S
The AirTAC SAIJ160X125-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel back by up to 40 mm. This yields a usable stroke window of 85 to 125 mm, letting you dial in the exact retract end-position at commissioning without swapping out the barrel or adding external stops. Built with a robust 40 mm carbon steel piston rod and a PT tapered port, it delivers a substantial 10053 N pull force at 0.5 MPa.
This extruded aluminum profile cylinder includes a magnet for position sensing, working seamlessly with AirTAC CMSE reed and DMSE electronic sensors. It features variable air cushions at both ends to decelerate the heavy 160 mm bore payload, but note that the adjuster and cushions act only as travel stops—they do not hold the load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series.
Airtac SAIJ160 Adjustable Cylinder SAIJ160X125-40S Technical Specifications
| Model | Airtac SAIJ160 Adjustable Cylinder SAIJ160X125-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø160 mm |
| Stroke | 125 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 SAIJ160X125-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 160 | Bore size in mm. |
| ×125 | 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 SAIJ160X125-40S Is Used
Machine Setup & Commissioning
Fine-tune the 85-125 mm travel window during initial machine commissioning to achieve exact end-position alignment without machining custom spacers.
Product Size Changeover
Quickly adapt the retract distance on a production line when product sizes change, using the rear stopper to accommodate new dimensions on the fly.
Heavy Forming End-Stop
Leverage the 10053 N pull force for heavy-duty forming or pressing tasks, adjusting the stroke limit to prevent over-travel on sensitive tooling.
Is the Airtac SAIJ160 Adjustable Cylinder SAIJ160X125-40S the Right Cylinder?
Choose this 160 mm bore adjustable-stroke cylinder when your machine setup requires precise variable end-stops and you need the high thrust of a larger bore. If you need less force, stepping down to a 125 mm bore drops the 0.5 MPa pull force to 5734 N. The SAIJ160X125-40-S is dimensionally interchangeable per ISO 15552 and uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR brackets.
Because the stroke is 125 mm (under 300 mm), side-load stress on the 40 mm rod thread is manageable, but an external guide is still recommended for heavy off-center loads. To replace this cylinder, match the 160 mm bore, 125 mm stroke, 40 mm adjustment, PT port thread, 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 SAIJ160X125-40S FAQ
The rear adjusting screw acts as a mechanical stopper that lets you shorten the nominal 125 mm stroke by up to 40 mm, providing an adjustable travel window of 85 to 125 mm. It only sets the end position; it does not lock the load without continuous air pressure.
At 0.5 MPa, it provides 14074 N of push force and 10053 N of pull force. At the maximum operating pressure of 1.0 MPa, the push force reaches 18095 N.
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