Airtac SAIJ125 Adjustable Cylinder SAIJ125X80-30S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X80-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 80mm 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
- Stroke80 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X80-30S
The AirTAC SAIJ125X80-30-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers 6136N of push force at 0.5MPa and uses a PT G1/2 port. Equipped with a standard magnet, it interfaces seamlessly with CMSE reed and DMSE electronic sensors fitted into the dual-sided barrel grooves.
With a nominal 80mm stroke and a 30mm adjustment range, this SKU provides a usable travel window of 50-80mm. This built-in mechanical stop allows you to fine-tune the retract end-position during commissioning without swapping out the cylinder or adding external stops. The 32mm carbon steel rod and M27x2 thread provide robust resistance to side loading, while the 40mm variable air cushions at both ends decelerate the heavy 125mm bore payload smoothly.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X80-30S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X80-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 80 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 SAIJ125X80-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×80 | 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 SAIJ125X80-30S Is Used
Machine Changeover
Dial in the 50-80mm travel window during product size transitions without disassembling tooling or bolting on external physical stops.
Press Positioning
Fine-tune the retract end-stop on a 6136N press to accommodate varying material thicknesses accurately at commissioning.
Heavy Payload Damping
Leverage the 40mm variable air cushions at both ends to safely decelerate massive 125mm bore loads moving at up to 500mm/s.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X80-30S the Right Cylinder?
Choose this 125mm bore when 80mm bore output (2513N at 0.5MPa) is insufficient and you need heavy thrust up to 6136N. The adjustable stroke is ideal for product changeovers on a line, allowing the end-stop to be dialed back by up to 30mm. Because the rear adjuster acts only as a travel stop and the cushions manage deceleration, neither will hold a load without live air pressure. For fail-safe load holding, consider the SAIL or BSAI series. This SAIJ variant uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR brackets. To match this ISO 15552 replacement exactly, specify the 80mm stroke, 30mm adjustment, PT G1/2 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 SAIJ125X80-30S FAQ
At a 0.5MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. It can reach up to 1251 kgf at its maximum 1.0MPa pressure.
The rear adjuster acts as a mechanical stop that lets you shorten the nominal 80mm stroke by up to 30mm, creating a 50-80mm usable travel window. It sets the end-position but does not lock the load without continuous live air pressure.
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