Airtac SAIJ125 Adjustable Cylinder SAIJ125X170-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X170-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 170mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ125 mm
- Stroke170 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X170-10S
The AirTAC SAIJ125X170-10-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers substantial thrust, generating 6136N of pull force at 0.5 MPa, making it well-suited for heavy-duty actuation. The built-in magnet enables position sensing via CMSE reed and DMSE electronic switches.
This model features a 170mm nominal stroke that can be fine-tuned down by up to 10mm, providing a precise 160-170mm usable travel window. Unlike a fixed-stroke SAI cylinder, the external rear stopper allows you to dial in the exact end position at commissioning without adding external stops. The carbon steel rod and M27x2 thread provide robust load handling, while the extruded aluminum barrel includes sensor grooves on both sides.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X170-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X170-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 170 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M27×2 |
| 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, 40 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 (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ125 Adjustable Cylinder SAIJ125X170-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | 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 SAIJ125 Adjustable Cylinder SAIJ125X170-10S Is Used
Heavy Press Tonnage
Provides 6136N pull force at 0.5 MPa for heavy pressing, with the 10mm adjuster allowing precise bottoming-out tuning.
Product Changeover
Quickly adapt the 160-170mm travel window to accommodate new package sizes on a production line without changing the cylinder.
Machine Setup
Dial in the exact retract position during commissioning using the rear stopper, avoiding the need for machined external spacers.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X170-10S the Right Cylinder?
Choose this 125mm bore when your application requires higher force than an 80mm cylinder (which provides 2268N pull at 0.5 MPa) but does not need the full capacity of a 160mm unit. The adjustable 160-170mm travel window is ideal for product changeovers on a line, letting you reset the end-stop quickly without swapping the cylinder. For any new build, specify the PT port thread, the 170mm stroke, the 10mm adjustment, and the -S magnet.
Because the 170mm stroke is relatively short for this large bore, side-load concerns are minimal, though an external guide is always recommended for heavy loads. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding without pressure, select an SAIL or BSAI cylinder. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ125 Adjustable Cylinder SAIJ125X170-10S FAQ
This 125mm bore cylinder generates 6136N of pull force and 8590N of push force at 0.5 MPa. At 0.7 MPa, the push force increases to 8590N.
The rear adjuster acts as a mechanical stop that lets you trim the effective travel back by up to 10mm, creating a 160-170mm usable window. It decelerates the end position but does not lock the load without live air pressure.
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