Airtac SAIJ125 Adjustable Cylinder SAIJ125AX1000-30S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX1000-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 1000mm 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
- Stroke1000 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX1000-30S
The AirTAC SAIJ125X1000-30-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 970 to 1000 mm, allowing you to trim the effective stroke by up to 30 mm during commissioning. Equipped with a SUS420J2 stainless steel rod and a -S magnet, it integrates seamlessly with AirTAC CMSE reed and DMSE electronic sensors mounted into the dual-side sensor grooves.
Delivering 6136 N of push force at 0.5 MPa, this bore size handles heavy actuation tasks. The rear adjuster acts purely as a mechanical stop to fine-tune the end position and deceleration, meaning it does not hold the load without live air pressure. For load-holding requirements without continuous air, consider the SAIL or BSAI series instead.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX1000-30S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX1000-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 1000 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 SAIJ125AX1000-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×1000 | 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 SAIJ125AX1000-30S Is Used
Product Changeovers
Dial in the 970-1000 mm travel window instantly on the production line when switching between product sizes, eliminating the need to physically swap cylinders.
Heavy Material Handling
Leverage the 6136 N push force at 0.5 MPa to move substantial loads, using the rear stop to perfectly set the resting position for heavy pallets or fixtures.
Commissioning End-Stops
Fine-tune the final 30 mm of retract travel during machine setup, ensuring precise mechanical alignment without relying on expensive external stopper blocks.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX1000-30S the Right Cylinder?
Choose this adjustable-stroke model when your equipment requires exact end-position tuning without swapping out the entire cylinder or adding bulky external stops. If your application needs less force, stepping down to a 100 mm bore yields 3927 N of push force at 0.5 MPa. For even heavier loads, the 160 mm bore provides 10053 N.
When replacing an ISO 15552 cylinder, match the 125 mm bore, 1000 mm stroke, 30 mm adjustment range, PT tapered G1/2 port, and the -S magnet. Because this cylinder features a 1000 mm stroke, an external guide is strongly recommended to prevent excessive side-loading on the rod. Remember that the SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
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 SAIJ125AX1000-30S FAQ
At a 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. The maximum force at 1.0 MPa is 1251 kgf.
The rear adjuster allows you to shorten the nominal 1000 mm stroke by up to 30 mm, giving an adjustable travel window of 970 to 1000 mm. It functions as a mechanical stop to tune end positions and does not lock or hold the load without live air pressure.
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