Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-20S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 210mm 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
- Stroke210 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-20S
The AirTAC SAIJ63X210-20-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that trims the effective travel back by up to 20 mm. This creates a highly usable 190-210 mm end-position window, allowing you to fine-tune the retract distance at commissioning without swapping the unit or adding external stops. Built with a SUS420J2 stainless steel rod and a PT tapered port, it delivers a robust 1559 N pull force at 0.5 MPa.
The extruded aluminum barrel includes sensor grooves on both sides to accept CMSE reed and DMSE electronic solid-state switches. It uses a reduced mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Remember that the rear adjuster acts purely as a travel stop and does not hold the load without live air pressure; for true load-holding, consider an external rod lock or pilot-operated check valve.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-20S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 210 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 SAIJ63AX210-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×210 | 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 SAIJ63AX210-20S Is Used
Machine Changeover
Dial in the exact retract distance during product size changes without swapping out the entire cylinder or repositioning hard stops.
Commissioning Calibration
Fine-tune the 190-210 mm travel window during initial setup to perfectly time the end-of-stroke position with your process.
Assembly Positioning
Use the precise end-stop adjustment to set accurate feeding distances for varying component sizes on an automated line.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX210-20S the Right Cylinder?
Choose this 63 mm bore when your application requires more thrust than the 50 mm bore (which provides 825 N pull at 0.5 MPa) but does not need the heavier 80 mm bore (2268 N pull). The adjustable stroke is ideal for product-size changeovers on a line, letting you dial in the exact 190-210 mm retract position on the fly instead of machining custom external stoppers.
As a dimensionally interchangeable ISO 15552 cylinder, the replacement match for this SKU is: 63 mm bore, 210 mm stroke, 20 mm adjustment, PT port thread, SUS420J2 rod material, and an -S magnet for sensors. Because the stroke is 210 mm, ensure external guiding is used if the load is heavy or unbalanced to prevent side-loading the rod.
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 SAIJ63AX210-20S FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of pull force and 1402 N of push force. At 0.7 MPa, the push force increases to 2182 N.
The rear adjuster allows you to shorten the 210 mm nominal stroke by up to 20 mm, creating a usable travel window of 190-210 mm. It functions as a travel stop for end-position tuning and does not lock the load without live air.
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