Airtac SAIJ125 Adjustable Cylinder SAIJ125X95-20
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X95-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 95mm 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
- Stroke95 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X95-20
The AirTAC SAIJ125X95-20 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers substantial thrust, providing 8590N of push force and 5734N of pull force at 0.7 MPa. By integrating a 20mm adjustment mechanism at the retract end, this model provides a usable travel window of 75-95mm, allowing technicians to dial in the exact end position without swapping components.
This adjustable-stroke design eliminates the need to bolt on external stops during machine commissioning or product changeovers. The extruded aluminum barrel features sensor grooves on both sides for CMSE and DMSE switches, though this specific SKU omits the magnet. It utilizes a PT tapered port thread, a 32mm carbon steel rod, and achieves a standard operating speed of 30-500 mm/s.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X95-20 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X95-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 95 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 SAIJ125X95-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×95 | 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 SAIJ125X95-20 Is Used
Press Stroke Calibration
Dial in the exact 75-95mm retract position during machine commissioning to accommodate varying material thicknesses without adding external mechanical stops.
Product Size Changeover
Quickly adjust the end-of-stroke position on a production line when switching between different product dimensions, minimizing downtime.
High-Force Clamping
Leverage the 8590N push force at 0.7 MPa to secure heavy workpieces, using the adjuster to set the precise clamping depth.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X95-20 the Right Cylinder?
Selecting the SAIJ125X95-20 is ideal when an application demands high force alongside variable end-stop positioning. If your setup requires less thrust, stepping down to a 100mm bore yields 5497N of push force at 0.7 MPa, whereas moving up to a 160mm bore provides 14074N. This cylinder's 20mm adjuster acts purely as a travel stop to fine-tune deceleration; it does not hold the load without live air. For true load-holding, consider the SAIL or BSAI series.
When replacing an ISO 15552 cylinder, match the 125mm bore, 95mm nominal stroke, PT port thread, and mounting style. SAIJ supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Because the 95mm stroke is relatively short for this large bore, side-load concerns are minimal, but the robust 32mm rod with an M27x2 thread still handles substantial off-center loads effectively.
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 SAIJ125X95-20 FAQ
At an operating pressure of 0.7 MPa, this 125mm bore cylinder generates 8590N of push force and 5734N of pull force. It can reach a maximum push force of 11045N at 0.9 MPa.
The rear adjuster screw allows you to shorten the effective stroke by up to 20mm. This creates a usable travel window of 75-95mm, enabling fine-tuning of the end position at commissioning without replacing the cylinder.
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