
The AirTAC SAIJ125 Adjustable Cylinder SAIJ125X60-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 60mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
The AirTAC SAIJ125X60-30 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 30 to 60 mm usable travel window, allowing you to dial back the 60 mm nominal stroke by up to 30 mm during commissioning without adding external stops.
This extruded aluminum barrel design omits tie-rods and includes sensor grooves on both sides for flexible switch mounting. It operates at 30-500 mm/s and uses a PT tapered G1/2 port. The rear adjuster acts purely as a travel stop for end-position tuning; it does not hold the load without live air, so applications requiring true load-holding should use an external rod lock or a related SAIL pneumatic-lock cylinder.
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X60-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 60 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.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 5734 N | 5734 N |
| 0.7 MPa | 8027 N | — |
| Max (@1.0 MPa) | 1169 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×60 | 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.
Dials in the exact 30-60 mm retract distance for large machining clamps, ensuring heavy workpieces are held securely without over-traveling.
Adjusts the stroke end-stop on the fly when a packaging line switches to a different carton size, eliminating the need to physically swap cylinders.
Provides a 30 mm mechanical trim window to fine-tune the final resting position of heavy actuators during initial machine setup and timing synchronization.
The adjustable 30-60 mm travel window is ideal for product-size changeovers on a line, letting operators fine-tune the retract end-position quickly instead of swapping out a fixed-stroke SAI cylinder.
When matching an ISO 15552 replacement, verify your bore, 60 mm stroke, 30 mm adjustment range, PT G1/2 port, and required mounting style. SAIJ supports a reduced set of mounts: Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR brackets. Because it lacks a -S magnet suffix, this specific unit cannot host CMSE reed or DMSE electronic sensors without modification.
Quick checklist
At 0.9 MPa, the push force increases to 11045 N.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 60 mm nominal stroke by up to 30 mm, creating a 30 to 60 mm usable travel window. It only sets the end-position and does not lock or hold the load without continuous air pressure.
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