Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X800-50
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X800-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 800mm 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
- Stroke800 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X800-50
The AirTAC SAIJ63X800-50 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 750 to 800 mm, allowing you to dial back the nominal 800 mm stroke by up to 50 mm during commissioning. Delivering 2182 N of push force at 0.7 MPa, it fits perfectly into medium-force pneumatic setups. The extruded aluminum barrel includes sensor grooves on both sides for straightforward position feedback.
This model uses a 20 mm carbon steel piston rod with an M16x1.5 thread, paired with a G3/8 PT port. It features variable air cushions at both ends to decelerate the moving load over a 36 mm cushion length. The rear adjuster acts purely as a mechanical stop to fine-tune the end position without adding external stops; it does not hold the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X800-50 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X800-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 800 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 SAIJ63X800-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×800 | 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 SAIJ63X800-50 Is Used
Product Size Changeovers
Dial the stroke back by up to 50 mm to accommodate different package lengths on a conveyor without changing the cylinder.
Commissioning Fine-Tuning
Precisely set the retract end-position during machine setup to avoid recalculating hard stops for an 800 mm travel axis.
Adjustable End Stops
Use the rear mechanical stopper to establish a variable retract window between 750 and 800 mm for flexible assembly tooling.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X800-50 the Right Cylinder?
Choose this adjustable-stroke model when an 800 mm travel application requires frequent end-position tuning or product-size changeovers, avoiding the need to physically swap cylinders. If your process demands less force, stepping down to a 50 mm bore yields 1374 N of push force at 0.7 MPa. For higher force requirements, stepping up to an 80 mm bore provides 3518 N.
Because the 800 mm stroke is long, the 20 mm rod needs external guide rails to prevent side-loading and binding. To replace an ISO 15552 cylinder, match the 63 mm bore, 800 mm stroke, 50 mm adjustment, G3/8 PT ports, and the required mounting from the SAIJ set (Basic, FA, LB, TC, FTC, TCM1, TCM2). If you need fail-safe load holding without live air, select the SAIL or BSAI series instead, as the SAIJ adjuster is not a lock.
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 SAIJ63X800-50 FAQ
At a 0.7 MPa operating pressure, the 63 mm bore provides 2182 N of push force and 1402 N of pull force. It delivers a maximum of 318 kgf at 1.0 MPa.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective travel from 800 mm down to 750 mm. This creates a 750-800 mm usable window for fine-tuning the end position without swapping the cylinder.
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