Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X800-75S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X800-75S 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 SAIJ63X800-75S
The AirTAC SAIJ63X800-75-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 800 mm stroke that can be fine-tuned backward by up to 75 mm, yielding a usable travel window of 725-800 mm. Delivering 1559 N of pull force at 0.5 MPa, it utilizes a G3/8 port and a 20 mm carbon steel rod. The integrated -S magnet enables position detection with CMSE reed or DMSE electronic sensors.
Because the 800 mm stroke is substantial, the 20 mm rod and M16x1.5 thread still require external guidance to prevent excessive side loading on the piston. This extruded aluminum profile cylinder supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. The rear screw acts purely as a travel stop for end-position tuning, not as a load-holding lock.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X800-75S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X800-75S |
|---|---|
| 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 SAIJ63X800-75S
| 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 SAIJ63X800-75S Is Used
Variable End-Stop Tuning
Dial in the exact retraction point within the 725-800 mm window during machine commissioning to accommodate different product lengths without mechanical rebuilds.
Long-Stroke Diversion
Handle long-trroke sorting or diverting tasks on a conveyor line, using the 75 mm adjustment to fine-tune the pusher distance for various package sizes.
Product Size Changeover
Quickly reset the stroke end-position on automated production lines when switching between product runs, leveraging the rear stopper for rapid mechanical adjustments.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X800-75S the Right Cylinder?
Choose this 63 mm bore when an application requires moderate force (1559 N pull at 0.5 MPa) alongside a long, variable end-stop. If your setup needs less thrust, the 50 mm bore offers 825 N pull at 0.5 MPa; for heavier loads, step up to the 80 mm bore providing 2268 N pull. The adjustable stroke is ideal for product changeovers, allowing you to dial in the 725-800 mm window without swapping cylinders or adding external stops. For any 800 mm stroke, always use an external guide to support the load.
When specifying an ISO 15552 replacement, match the 63 mm bore, 800 mm stroke, 75 mm adjustment, PT tapered port threads, and the -S magnet. Remember that the rear adjuster and air cushions only decelerate the load; they do not hold position without live air. For true load-holding without pneumatic pressure, consider an AirTAC SAIL or BSAI cylinder, or an external rod 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 SAIJ63X800-75S FAQ
The rear adjusting screw acts as a mechanical stopper, allowing you to shorten the effective stroke by up to 75 mm. This creates a usable travel window of 725-800 mm, enabling fine-tuning of the end position at commissioning without changing the cylinder.
At 0.5 MPa operating pressure, the SAIJ63X800-75-S provides 1559 N of pull force and 2182 N of push force. It can deliver a maximum push force of 2805 N at 0.9 MPa.
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