Airtac SAIJ125 Adjustable Cylinder SAIJ125X175-100S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X175-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 175mm 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
- Stroke175 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X175-100S
The AirTAC SAIJ125X175-100-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the travel window down to 100 mm. With a 175 mm nominal stroke, this specific SKU yields a usable range of 75-175 mm, letting you dial in the exact end position without adding external stops. It delivers 6136 N of push force and 5734 N of pull force at 0.5 MPa.
This bore size uses a 32 mm carbon steel rod with an M27x2 thread, paired with 40 mm air cushions at both ends to manage heavy kinetic energy. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated magnet (-S) is fully compatible with AirTAC CMSE reed and DMSE solid-state switches for precise position feedback.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X175-100S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X175-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 175 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 SAIJ125X175-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×175 | 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 SAIJ125X175-100S Is Used
Variable Product Changeover
Perfect for packaging lines that process varying container sizes, allowing operators to dial back the stroke from 175 mm to 75 mm on the fly without swapping hardware.
Heavy Pressing Operations
Provides 6136 N of thrust at 0.5 MPa for heavy assembly tasks, with the rear stop ensuring precise, repeatable pressing depth regardless of material tolerances.
Automated Forming Stops
Used in automated forming lines where the end-stop position must be tuned during commissioning, utilizing the 40 mm air cushions to decelerate heavy 125 mm bore loads smoothly.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X175-100S the Right Cylinder?
Choose this 125 mm bore when your application requires heavy thrust between the 80 mm bore (2513 N push at 0.5 MPa) and the 160 mm bore (10053 N). The 100 mm adjustment range is exceptionally wide, making this cylinder ideal for machines running multiple product sizes where the retract end-stop frequently shifts. Because the nominal stroke is 175 mm, no external side-load guide is strictly required, though the heavy 32 mm rod helps manage bending stress under load.
Remember that the rear adjuster is a travel stop, not a locking device; it will not hold the load without live air pressure. If your setup needs fail-safe load holding, select an AirTAC SAIL or BSAI cylinder instead. For ISO 15552 dimensional interchangeability, match the 125 mm bore, 175 mm stroke, PT tapered port thread, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, 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 SAIJ125X175-100S FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder generates 6136 N of push force and 5734 N of pull force. It can achieve a maximum push force of 11045 N at 0.9 MPa.
The rear adjusting screw allows you to shorten the effective stroke by up to 100 mm. This means the 175 mm nominal stroke can be fine-tuned down to a 75 mm travel window, giving you a highly flexible end-position for product changeovers without replacing the cylinder.
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