Airtac SAIJ125 Adjustable Cylinder SAIJ125X1000-100
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X1000-100 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 SAIJ125X1000-100
The AirTAC SAIJ125X1000-100 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 6136N of push force at 0.5 MPa. It features a 125mm bore, a 1000mm nominal stroke, and a PT tapered port thread. By integrating an external adjusting screw at the rear, this unit allows you to shorten the effective travel by up to 100mm, creating a precise 900-1000mm usable stroke window without changing the cylinder body.
This adjustable stopper enables fine end-position tuning during commissioning or product changeover, entirely eliminating the need to bolt on external stops. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches. While the rear screw and variable air cushions safely decelerate the load at the travel end, neither component functions as a lock; position holding without live air requires a SAIL or BSAI variant.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X1000-100 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X1000-100 |
|---|---|
| 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 SAIJ125X1000-100
| 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 SAIJ125X1000-100 Is Used
Product Size Changeover
Dial in the 900-1000mm travel window on packaging lines to quickly adapt the end-stop position for different carton lengths without swapping hardware.
Commissioning Fine-Tuning
Use the rear adjuster to precisely trim the final 100mm of stroke during machine setup, ensuring heavy 6136N pushes hit the exact target coordinate.
Variable End-Stop Positioning
Ideal for automated assembly stations where the retraction point needs occasional adjustment to accommodate varying part dimensions on the fly.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X1000-100 the Right Cylinder?
Selecting this 125mm bore makes sense when an application requires substantial thrust, stepping up from an 80mm bore that provides 2513N push at 0.5 MPa. The adjustable stroke is chosen over a fixed SAI model when a machine setup demands a variable end-stop to accommodate product-size changes on the line. To replace an ISO 15552 cylinder, match the 125mm bore, 1000mm stroke, 100mm adjustment range, PT port thread, and your desired mounting set.
Because this model features a 1000mm stroke, the 32mm carbon steel rod and M27x2 rod thread require careful alignment to manage side loads. An external guide is strongly recommended to support the long unsupported travel and prevent premature seal wear. The compatible mounting set includes 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 SAIJ125X1000-100 FAQ
At 0.5 MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. It can reach a maximum push force of 11045N at 0.9 MPa.
The rear adjusting screw acts as a stopper that trims the effective travel. For this 1000mm stroke model with a -100 adjustment code, you can fine-tune the usable travel window anywhere between 900mm and 1000mm.
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