Airtac SAIJ125 Adjustable Cylinder SAIJ125X170-100
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X170-100 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 SAIJ125X170-100
The AirTAC SAIJ125X170-100 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 70 to 170 mm, allowing you to dial back the nominal 170 mm stroke by up to 100 mm during commissioning. Belonging to a high-force class, it delivers 6136 N of push force at 0.5 MPa and up to 11045 N at 0.9 MPa. The carbon steel rod and M27x2 thread provide robust load handling for heavy automation.
This adjustable model uses a reduced mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement. Operating speed is rated for 30-500 mm/s, and the cylinder uses PT tapered ports sized at G1/2.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X170-100 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X170-100 |
|---|---|
| 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 SAIJ125X170-100
| 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 SAIJ125X170-100 Is Used
Machine Setup Changeover
Dial in the exact 70 to 170 mm end-position during product size changes without physically swapping cylinders or adding external mechanical stops.
Heavy Material Handling
Leverage the 6136 N push force at 0.5 MPa to move heavy pallets or fixtures, using the adjustable stop to fine-tune the landing position.
Variable End-Stop Clamping
Apply precise clamping pressure on varying part sizes by adjusting the retract stroke inward, using the rear screw to tune the final position.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X170-100 the Right Cylinder?
Choose this 125 mm bore when your application requires substantial force, stepping up from a 100 mm bore that provides 3927 N at 0.5 MPa. The 100 mm adjustment range is ideal for product changeovers, letting you set variable end-stops without swapping the cylinder or adding external stops. For any load-holding requirements without live air pressure, note that the rear adjuster is strictly a travel stop, not a lock; you should look at the SAIL or BSAI series instead. When replacing an ISO 15552 cylinder, match the 125 mm bore, 170 mm stroke, 100 mm adjustment, PT port, and mounting style.
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 SAIJ125X170-100 FAQ
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke from 170 mm down to 70 mm. It decelerates the travel end but does not lock the load without live air pressure.
At a 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. At 0.9 MPa, the push force increases to 11045 N.
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Standard models usually ship in 3-4 days.
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