Airtac SAIJ125 Adjustable Cylinder SAIJ125X175-75S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X175-75S 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 SAIJ125X175-75S
The AirTAC SAIJ125X175-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 100 to 175 mm. It features a carbon steel rod and a built-in magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors. Delivering 6136 N of push force at 0.5 MPa, it handles heavy loads with precision.
This adjustable-stroke model allows you to fine-tune the retract end position during commissioning without swapping the cylinder or adding external stops. The extruded aluminum barrel includes sensor grooves on both sides, and the mounting interface supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 attachments. The rear adjuster acts purely as a travel stop, not a lock, so live air is required to maintain position.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X175-75S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X175-75S |
|---|---|
| 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 SAIJ125X175-75S
| 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 SAIJ125X175-75S Is Used
Product Changeover
Dial in the exact retract distance for different material lengths on a packaging line using the 100-175 mm travel window.
Machine Setup
Fine-tune the end-of-stroke position during commissioning without machining new hard stops or changing the cylinder.
Heavy Forming
Leverage the 6136 N push force at 0.5 MPa for pressing operations while trimming the stroke to protect tooling.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X175-75S the Right Cylinder?
Choose this 125 mm bore when you need significantly more thrust than the 80 mm class (which provides 2513 N push at 0.5 MPa) but want to avoid the larger footprint of a 160 mm cylinder. The 75 mm adjustment range is exceptionally wide, making this SKU ideal for machines that process varying product sizes and require frequent end-stop changes. If your application demands holding the load without continuous air pressure, consider the SAIL (air-released lock) or BSAI (clamp-lock) variants instead of relying on the adjuster.
For an exact ISO 15552 replacement, match the 125 mm bore, 175 mm nominal stroke, 75 mm adjustment range, PT tapered port threads, and the -S magnet option. Because the nominal stroke is 175 mm, standard mounting is straightforward, but always ensure adequate external guiding if the load generates significant bending moments.
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 SAIJ125X175-75S FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. It can reach a maximum push force of 11045 N at 0.9 MPa.
The rear adjuster screw allows you to shorten the effective stroke by up to 75 mm. This creates a usable travel window of 100 to 175 mm, letting you set the exact retract end position without adding external stops.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SAI Cylinders
Request a Quote for Airtac SAIJ125 Adjustable Cylinder SAIJ125X175-75S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.