
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X950-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 950mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
The AirTAC SAIJ63X950-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that permits fine-tuning of the end position. It provides a usable travel window of 875-950 mm, enabling precise variable end-stops without swapping hardware. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement.
Operating at 0.7 MPa yields 2182 N of push force, while the M16x1.5 piston rod and G3/8 port handle the required air volume. Because this unit lacks a magnet, position sensing requires external methods rather than CMSE or DMSE switches.
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X950-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 950 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M16×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 36 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 | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
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. |
|---|---|
| 63 | Bore size in mm. |
| ×950 | 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.
Dial in the 875-950 mm travel window during packaging line format changes to accommodate varying carton lengths without replacing the actuator.
Fine-tune the exact retract position during machine setup to perfect the hand-off distance, avoiding the need to bolt on external mechanical stops.
Move payloads across a 950 mm span on automated assembly lines, using the rear adjustment to dial back the stroke precisely for specific tooling depths.
Choose this 63 mm bore when an application demands 1559 N of thrust at 0.5 MPa, stepping down from the 80 mm bore that delivers 2513 N at the same pressure. The 75 mm rear adjuster allows exact commissioning tuning and product-size changeovers, functioning purely as a mechanical stop rather than a lock. For load-holding without live air pressure, select the SAIL or BSAI series instead.
With a 950 mm stroke, the unsupported rod is highly susceptible to side-loading and sagging; an external guide rail is mandatory to prevent premature seal wear. This cylinder is dimensionally interchangeable per ISO 15552 and supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts.
Quick checklist
At an operating pressure of 0.5 MPa, it provides 1559 N of push force and 1402 N of pull force. At 0.7 MPa, the push force increases to 2182 N.
The external rear stopper allows you to shorten the effective travel from the 950 mm nominal stroke down to 875 mm. It acts as a travel stop for end-position tuning and does not lock or hold the load without continuous air pressure.
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