Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX290-50
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX290-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 290mm 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
- Stroke290 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX290-50
The AirTAC SAIJ63X290-50 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 240 to 290 mm, allowing you to dial back the nominal 290 mm stroke by up to 50 mm. This bore size delivers a robust 2182 N of push force at 0.7 MPa, making it well suited for medium-duty positioning tasks.
The piston rod is constructed from SUS420J2 stainless steel for high durability, and pneumatic connections use PT tapered threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. While the rear adjuster and variable air cushions fine-tune the end-of-stroke deceleration, neither component will hold a load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX290-50 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX290-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 290 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 SAIJ63AX290-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×290 | 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 SAIJ63AX290-50 Is Used
Machine Changeover
Dial in the exact 240 to 290 mm travel distance during product line changeovers without replacing the cylinder or adding external mechanical stops.
Variable End-Positioning
Leverage the 50 mm rear adjustment screw to fine-tune the retract end-position precisely during machine commissioning.
Medium-Force Assembly
Utilize the 2182 N push force at 0.7 MPa to drive medium-duty clamping and assembly operations that require flexible stroke limits.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX290-50 the Right Cylinder?
Choose this 63 mm bore if your application requires more thrust than a 50 mm cylinder (which provides 1374 N push at 0.7 MPa) but you want to avoid the larger footprint of an 80 mm option. The 50 mm adjustment range is ideal for machine setups requiring variable end-stops or frequent product-size changeovers, eliminating the need to physically swap out a fixed-stroke SAI cylinder during commissioning.
Because the total stroke is 290 mm, an external guide is recommended to prevent excessive side-loading on the rod. For exact ISO 15552 interchangeability, match the 63 mm bore, 290 mm stroke, 50 mm adjustment, PT port thread, and Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounting options. Note that this unit lacks a magnet; if position sensing is needed, an -S version with CMSE reed or DMSE electronic sensors is required. For load-holding without continuous air pressure, consider the SAIL or BSAI 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 SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX290-50 FAQ
At 0.7 MPa operating pressure, this 63 mm bore cylinder generates 2182 N of push force and 1402 N of pull force. It can reach a maximum of 2805 N push force at 0.9 MPa.
The rear adjuster acts as a stopper that lets you shorten the effective stroke by up to 50 mm, creating a usable travel window of 240 to 290 mm. It only sets the travel end and does not lock the load without live air pressure.
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