Airtac SAIJ125 Adjustable Cylinder SAIJ125AX700-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX700-10S 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 SAIJ125AX700-10S
The AirTAC SAIJ125X700-10-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 690-700 mm usable travel window, letting you dial back the nominal 700 mm stroke by up to 10 mm during commissioning. Delivering 6136 N of pull force at 0.5 MPa, it handles heavy positioning tasks with precision.
This configuration includes a SUS420J2 stainless steel rod (option A) for corrosion resistance and a magnet for CMSE or DMSE sensors. The extruded aluminum barrel carries sensor grooves on both sides, and the PT tapered ports ensure a tight pneumatic seal for the G1/2 port interface.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX700-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX700-10S |
|---|---|
| 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 SAIJ125AX700-10S
| 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 SAIJ125AX700-10S Is Used
Press Fit Tuning
Dial in the exact 690-700 mm end position for heavy press operations, ensuring precise insertion depths without machining custom stopper blocks.
Line Changeover
Quickly adjust the retract end-stop by up to 10 mm during product size transitions on a conveyor line, minimizing downtime between runs.
Machine Setup
Fine-tune the final resting position of heavy actuators at commissioning, using the rear screw to compensate for mechanical tolerances.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX700-10S the Right Cylinder?
Choose this 125 mm bore when a 100 mm bore (offering 3681 N pull at 0.5 MPa) lacks the force for heavy loads, but a 160 mm bore is excessive. The 10 mm rear adjuster allows fine end-position tuning on product changeovers without swapping the cylinder or adding external stops. Unlike a fixed-stroke SAI, this SAIJ variant accommodates variable end-stops directly.
Because the stroke is 700 mm, the 32 mm rod diameter needs external guidance to prevent sag and side-load damage over long unsupported travel. Remember that the rear adjuster acts only as a travel stop, not a lock; the SAIJ does not hold loads without live air, so consider a SAIL or BSAI cylinder for load-holding needs. For ISO 15552 replacement, match the 125 mm bore, 700 mm stroke, 10 mm adjust, PT G1/2 ports, 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 SAIJ125AX700-10S FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. It can reach up to 11045 N push at 0.9 MPa.
The rear adjuster screw lets you shorten the 700 mm nominal stroke by up to 10 mm, creating a 690-700 mm travel window. It acts as a mechanical stop to fine-tune the end position and is not a lock, so it will not hold the load without live air pressure.
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