Airtac SAIJ125 Adjustable Cylinder SAIJ125X95-50S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X95-50S 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 SAIJ125X95-50S
The AirTAC SAIJ125X95-50-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 6136N of push force at 0.5MPa and features a 95mm nominal stroke that can be fine-tuned down by up to 50mm, creating a precise 45-95mm usable travel window. This built-in adjustability allows you to dial in exact end positions during commissioning without adding external stopper blocks.
This bore size features a robust 32mm carbon steel piston rod with an M27x2 thread, paired with a PT tapered G1/2 port. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated -S magnet supports AirTAC CMSE reed and DMSE electronic solid-state switches for versatile position detection. It utilizes a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X95-50S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X95-50S |
|---|---|
| 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 SAIJ125X95-50S
| 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 SAIJ125X95-50S Is Used
Product Size Changeovers
Quickly modify the 45-95mm travel endpoint via the rear screw when switching machinery between different product lengths, eliminating the need for physical cylinder replacement.
Precision End-Stop Tuning
Dial in the exact retract position during machine commissioning to achieve perfect alignment, using the 50mm adjustment window rather than machining custom external spacers.
Heavy Forming Operations
Leverage the 6136N push force at 0.5MPa for pressing or forming tasks, while retaining the flexibility to tweak the stroke depth for different material thicknesses.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X95-50S the Right Cylinder?
Choose this 125mm bore when a 100mm bore (offering 3927N push at 0.5MPa) lacks the necessary thrust, but before stepping up to the massive 160mm bore (10053N push). The 50mm adjustment range is highly valuable on lines running multiple product sizes, letting you reposition the retract stopper quickly instead of physically swapping cylinders. Remember that the rear adjuster acts only as a travel stop and the air cushions handle deceleration; neither will hold a load without live air pressure. For load-holding requirements, consider an AirTAC SAIL or BSAI cylinder. To match this ISO 15552 interchangeable cylinder exactly, specify the 125mm bore, 95mm stroke, 50mm adjustment, PT port, and -S magnet.
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 SAIJ125X95-50S FAQ
At 0.5MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. If you increase the pressure to 0.7MPa, the push force rises to 8590N.
The rear adjuster screw lets you shorten the 95mm nominal stroke by up to 50mm, providing a usable travel window of 45-95mm. This stopper sets the end position but does not lock the load without continuous air pressure.
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