Airtac SAIJ125 Adjustable Cylinder SAIJ125X700-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X700-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 700mm 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
- Stroke700 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X700-10S
The AirTAC SAIJ125X700-10-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 690 to 700 mm usable travel window, allowing you to fine-tune the retract end-position by up to 10 mm without adding external stops. This 125 mm bore generates 6136 N of push force at 0.5 MPa, making it suitable for heavy-duty positioning tasks.
Equipped with a -S magnet, it supports position sensing via AirTAC CMSE reed and DMSE electronic switches. The extruded aluminum barrel includes sensor grooves on both sides. Because the 700 mm stroke is substantial, the 32 mm carbon steel rod and M27x2 thread handle high stresses, but an external guide is recommended to manage side loads on long unsupported travels.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X700-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X700-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 700 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 SAIJ125X700-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×700 | 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 SAIJ125X700-10S Is Used
Heavy-Duty Positioning
Provides 6136 N of thrust at 0.5 MPa for moving heavy jigs, with a 10 mm adjustment window to dial in the exact retract position.
Machine Changeover
Quickly adapt the 690 to 700 mm travel end-stop for different product sizes on a production line without swapping the cylinder.
Long-Stroke Assembly
Handles 700 mm travel for large-format assembly machines, using the -S magnet with DMSE sensors to confirm end-of-stroke arrival.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X700-10S 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 push at 0.5 MPa). The adjustable rear stop is selected over a fixed-stroke SAI cylinder when you need precise end-position tuning during commissioning or product changeovers. The PT tapered port thread and G1/2 port size are standard for this bore size.
When replacing an ISO 15552 cylinder, match the 125 mm bore, 700 mm stroke, 10 mm adjustment range, PT port, and -S magnet. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air; for fail-safe load holding, consider the SAIL or BSAI series. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and 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 SAIJ125X700-10S FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force increases to 8590 N.
The rear adjuster screw allows you to shorten the effective travel from 700 mm down to 690 mm. This stop fine-tunes the end position at commissioning but does not lock the load without continuous air pressure.
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