Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX135-30
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX135-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 135mm 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.
- BoreØ63 mm
- Stroke135 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX135-30
The AirTAC SAIJ63X135-30 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 1559N of push force and 1402N of pull force at 0.5MPa, featuring a G3/8 port and a 20mm piston rod. The integrated rear stopper allows you to fine-tune the effective travel down from the 135mm nominal stroke, creating a precise 105-135mm usable window. This eliminates the need to physically swap cylinders when dialing in end positions during commissioning.
This variant features an SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance compared to standard carbon steel. The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of position switches. Because no magnet is specified, external solid-state DMSE or reed CMSE sensors cannot be used without modifying the configuration. The rear screw acts purely as a travel stop and does not lock the load without continuous air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX135-30 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX135-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 135 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.
Theoretical Output Force (Ø63mm)
| 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.
Model Code: Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX135-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×135 | 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 SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX135-30 Is Used
Changeover Calibration
Dial in the exact 105 to 135mm end-stop during product family changeovers without swapping hardware or adding external stops.
Press Fit Tuning
Micro-adjust the rear stopper to perfect the pressing depth of pins or bearings, compensating for material thickness variations.
Variable Diverting
Adjust the retract stroke on the fly to handle different package sizes on a packaging line, ensuring precise positioning.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX135-30 the Right Cylinder?
Choose this 63mm bore when an application requires moderate thrust (1559N push at 0.5MPa) alongside variable end-position tuning. If your setup demands less force, stepping down to a 50mm bore yields 982N push force, while moving up to an 80mm bore provides 2513N. The adjustable 105-135mm travel window is ideal for product-size changeovers on a line, preventing the downtime of replacing a fixed-stroke SAI cylinder. For load-holding without live air pressure, this cylinder is insufficient; consider an AirTAC SAIL or BSAI locking cylinder instead.
When replacing an ISO 15552 cylinder, match the 63mm bore, 135mm nominal stroke, 30mm adjustment range, PT tapered port threads, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Note that FB, CA, CB, and CR mounts are omitted from this series. Since the 135mm stroke is under 300mm, side-load stress on the 20mm rod is minimal, though external guiding remains recommended for heavy lateral loads.
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 SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX135-30 FAQ
At 0.5MPa operating pressure, this 63mm bore cylinder provides 1559N of push force and 1402N of pull force. At 0.7MPa, the push force increases to 2182N.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the nominal 135mm stroke by up to 30mm. This creates a usable travel window of 105-135mm for fine-tuning end positions at commissioning.
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