Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX200-50S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX200-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 200mm 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
- Stroke200 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX200-50S
The AirTAC SAIJ63X200-50-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 150-200 mm usable travel window, allowing you to trim the 200 mm nominal stroke by up to 50 mm during commissioning. Delivering a push force of 2182 N at 0.7 MPa, it handles robust actuation tasks while utilizing a PT tapered port thread and an SUS420J2 stainless steel rod for improved corrosion resistance.
This model includes a magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors, which seat neatly into the sensor grooves on both sides of the extruded aluminum barrel. The rear adjuster acts purely as a mechanical stop to fine-tune the retract end position; it does not lock the load without live air pressure. For applications requiring position holding, consider the SAIL or BSAI series instead.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX200-50S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX200-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 200 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 SAIJ63AX200-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×200 | 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 SAIJ63AX200-50S Is Used
Product Changeovers
Dial in the exact 150-200 mm retract distance on packaging lines when switching between different carton sizes without changing the cylinder.
Machine Setup
Fine-tune the end-of-stroke position during initial commissioning to perfectly align tooling, avoiding the need for custom spacer shims.
Variable End Stops
Provide a flexible mechanical stop for automated assembly stations where the final clamping position varies by component batch.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX200-50S the Right Cylinder?
Choose this 63 mm bore when a 50 mm bore falls short on power, delivering 1374 N of push force at 0.5 MPa compared to the smaller bore's 982 N. The 50 mm adjustment range is ideal for machinery requiring frequent product-size changeovers, eliminating the need to physically swap cylinders or add external stops. If your setup demands absolute load holding without continuous air pressure, this cylinder will not suffice—the adjuster only sets the travel end, so a pilot-operated check valve or a SAIL locking cylinder would be necessary.
When replacing an ISO 15552 cylinder, match the 63 mm bore, 200 mm stroke, 50 mm adjustment, PT port thread, and the -S magnet requirement. The SAIJ utilizes a specific mounting subset including Basic, FA, LB, TC, FTC, TCM1, and TCM2, intentionally omitting FB, CA, CB, and CR brackets. Since the 200 mm stroke is below the 300 mm threshold, side-load stress is moderate, but the 20 mm rod diameter still requires external guiding 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 SAIJ63AX200-50S FAQ
At 0.7 MPa operating pressure, this 63 mm bore cylinder provides 2182 N of push force and 1402 N of pull force. At the maximum 1.0 MPa pressure, it achieves 318 kgf.
The rear adjusting screw acts as a mechanical stop, allowing you to shorten the 200 mm nominal stroke by up to 50 mm, creating a 150-200 mm travel window. It only sets the end position and does not lock the load.
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