Airtac SAIJ160 Adjustable Cylinder SAIJ160BX250-40
The AirTAC Airtac SAIJ160 Adjustable Cylinder SAIJ160BX250-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø160mm bore and 250mm 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
- Stroke250 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ160 Adjustable Cylinder SAIJ160BX250-40
The AirTAC SAIJ160X250-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to fine-tune the effective travel within a 210-250 mm window. Built with an extruded aluminum barrel, it delivers robust thrust, generating 14074 N of push force at 0.7 MPa. This makes it well-suited for heavy-duty positioning tasks that require exact end-stop tuning without swapping out hardware.
This specific configuration features a SUS304 stainless steel rod (option B) for superior corrosion resistance and utilizes PT tapered port threads with a G3/4 connection. The rear adjuster acts purely as a mechanical stop to set the retract position; it does not lock the load, meaning live air pressure is required to maintain position. For applications needing true load-holding without air, an external rod lock or the AirTAC SAIL series is required.
Airtac SAIJ160 Adjustable Cylinder SAIJ160BX250-40 Technical Specifications
| Model | Airtac SAIJ160 Adjustable Cylinder SAIJ160BX250-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø160 mm |
| Stroke | 250 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 SAIJ160BX250-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 160 | Bore size in mm. |
| ×250 | 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 SAIJ160BX250-40 Is Used
Heavy Fixture Positioning
Dial in the exact retract distance of heavy machining fixtures within the 210-250 mm window during initial setup to avoid costly mechanical rework.
Product Size Changeover
Quickly adapt automated heavy-duty press lines to different material thicknesses by turning the rear adjuster instead of replacing the entire cylinder.
Variable End-Stop Dampening
Use the mechanical stop to set precise retract boundaries on large packaging equipment, working in tandem with the 50 mm air cushions to absorb kinetic energy.
Is the Airtac SAIJ160 Adjustable Cylinder SAIJ160BX250-40 the Right Cylinder?
Select this 160 mm bore cylinder when your application demands high force, such as moving heavy fixtures, but requires on-the-fly end-position adjustments to accommodate varying product sizes. If your thrust requirements are lower, stepping down to a 125 mm bore yields 8590 N of push force at 0.7 MPa, whereas moving up to a 200 mm bore provides 21991 N. The adjustable 210-250 mm travel window is ideal for commissioning precision equipment, allowing you to dial in the exact retract distance without adding external stopper blocks.
Because this is a 250 mm stroke, the 40 mm diameter rod handles side loads well, though any long unsupported travel still necessitates an external guide rail. When replacing an ISO 15552 cylinder, match the 160 mm bore, 250 mm nominal stroke, 40 mm adjustment, PT port thread, and mounting choice (Basic, FA, LB, TC, FTC, TCM1, or TCM2). Note that this unit lacks a magnet; adding an -S suffix enables CMSE reed or DMSE electronic sensors.
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 SAIJ160BX250-40 FAQ
At a standard operating pressure of 0.7 MPa, this 160 mm bore cylinder provides 14074 N of push force and 9425 N of pull force. At its maximum rated pressure of 1.0 MPa, it can deliver up to 10053 N of push force.
The rear mechanical adjuster allows you to shorten the nominal 250 mm stroke by up to 40 mm, creating a usable travel window of 210 to 250 mm. This stopper sets the retract end position but does not function as a lock, so continuous air pressure is needed to hold the load in place.
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