Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX170-20S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX170-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 170mm 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
- Stroke170 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX170-20S
The AirTAC SAIJ63X170-20-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 150-170 mm, allowing you to dial back the nominal 170 mm stroke by up to 20 mm during commissioning. This bore delivers 1559 N pull force at 0.5 MPa, making it robust for mid-range actuation. The barrel is extruded aluminum with sensor grooves on both sides.
This unit includes a SUS420J2 stainless steel rod (material code A) for improved corrosion resistance over standard carbon steel. Because it carries the -S magnet option, it is fully compatible with AirTAC CMSE reed and DMSE electronic sensors for precise end-of-travel detection. It uses PT tapered ports sized G3/8.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX170-20S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX170-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 170 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 SAIJ63AX170-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×170 | 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 SAIJ63AX170-20S Is Used
End-Position Tuning
Dial in the exact 150-170 mm travel distance during machine commissioning to perfect product placement without machining new hard stops.
Product Changeover
Quickly adapt the cylinder's retract end-stop for varying package sizes on a packaging line, leveraging the 20 mm adjustment window.
Mid-Force Actuation
Utilize the 1559 N pull force at 0.5 MPa for securely clamping medium-duty workpieces during machining operations.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX170-20S the Right Cylinder?
Choose this 63 mm bore when your application requires more thrust than the 50 mm class (which offers 825 N pull at 0.5 MPa) but you want to avoid the larger 80 mm footprint. The adjustable stroke is ideal for machine setups requiring fine end-position tuning without swapping cylinders or adding external stops. For a fixed-stroke alternative, the standard SAI series uses the same ISO 15552 mounting interface.
When replacing an ISO 15552 cylinder, match the 63 mm bore, 170 mm stroke, 20 mm adjustment range, G3/8 PT ports, and the -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. The rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding, consider the SAIL or BSAI series. At 170 mm, side loads are manageable, but long unsupported strokes still need an external guide.
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 SAIJ63AX170-20S 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, it delivers 2182 N of push force.
The rear adjuster screw allows you to shorten the effective stroke by up to 20 mm from the nominal 170 mm, giving an adjustable travel window of 150-170 mm. The adjuster is a mechanical stop, not a lock, so it cannot hold the load without live air pressure.
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