Airtac SAIJ125 Adjustable Cylinder SAIJ125X600-100
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X600-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 600mm 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
- Stroke600 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X600-100
The AirTAC SAIJ125X600-100 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers substantial thrust, generating 6136 N of pull force at 0.5 MPa and reaching 11045 N at 0.9 MPa. The defining feature of this SKU is the 100 mm adjustment range, which allows you to dial back the 600 mm nominal stroke to any effective travel length between 500 and 600 mm during commissioning.
This built-in rear stopper enables precise end-position tuning without swapping the barrel or adding external physical stops. The adjuster acts purely as a travel limit and does not hold the load without live air pressure. Built with a standard carbon steel rod and a G1/2 port, it includes variable air cushions at both ends to absorb kinetic energy. The extruded aluminum barrel features sensor grooves on both sides for CMSE reed or DMSE electronic switches, though this specific configuration omits the internal magnet.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X600-100 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X600-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 600 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 SAIJ125X600-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×600 | 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 SAIJ125X600-100 Is Used
Variable End-Stop Tuning
Dial in the exact clamping position within a 500-600 mm window during machine commissioning, avoiding the need to manufacture custom external spacers for different product lengths.
Product Size Changeover
Quickly adapt a 600 mm stroke line to handle shorter parts by retracting the rear stopper, minimizing downtime between production runs.
Heavy-Duty Forming
Leverage the 11045 N push force at 0.9 MPa for pressing or forming operations, using the adjustable stop to precisely limit the maximum travel distance.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X600-100 the Right Cylinder?
Choose this 125 mm bore when an 80 mm bore falls short on force—stepping up from the 80 mm (which provides 2268 N pull at 0.5 MPa) to this model yields 6136 N of pull at the same pressure. The 100 mm adjustment window is ideal for product changeovers on a line, letting you shift the end-stop by up to 100 mm without changing the cylinder. Because the nominal stroke is 600 mm, the unsupported rod length is significant; you must use an external guide to prevent side-load damage to the rod and front cap.
This cylinder uses the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting the FB, CA, CB, and CR options. It is dimensionally interchangeable per ISO 15552. If your machine requires true load-holding without live air, note that the rear adjuster is a stop, not a lock; you would need the SAIL (air-released lock) or BSAI (clamp-lock) series instead.
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 SAIJ125X600-100 FAQ
The rear of the cylinder features an external adjusting screw that acts as a physical stopper. For this model, it allows you to shorten the effective travel from the 600 mm nominal stroke down to as little as 500 mm, providing a 100 mm tuning window without altering the cylinder mounting.
At a standard 0.5 MPa operating pressure, it provides 6136 N of pull force and 8590 N of push force. At the maximum 1.0 MPa pressure, the push force reaches 1251 kgf.
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