Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX170-50S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX170-50S 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 SAIJ63AX170-50S
The AirTAC SAIJ63X170-50-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It features a 63 mm bore and a 170 mm nominal stroke that can be dialed back by up to 50 mm, yielding a usable travel window of 120-170 mm. This built-in adjustability allows you to fine-tune the retract end-position at commissioning without swapping hardware or adding external stops. The extruded aluminum barrel includes sensor grooves on both sides, and the -S option provides a magnet for position detection.
Delivering 1559 N of pull force at 0.5 MPa and 2805 N of push force at 0.9 MPa, this unit handles robust loads. The piston rod is constructed from SUS420J2 stainless steel (code A) for enhanced corrosion resistance, and the 20 mm rod diameter paired with an M16x1.5 thread provides solid resistance against side loading. It operates at speeds of 30-800 mm/s and uses PT (tapered) G3/8 ports. The rear adjusting screw acts purely as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX170-50S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX170-50S |
|---|---|
| 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 SAIJ63AX170-50S
| 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 SAIJ63AX170-50S Is Used
Product Changeovers
Dial in the 120-170 mm travel window during format changes on packaging lines without replacing the cylinder or adding shims.
Machine Commissioning
Fine-tune the retract end-stop precisely during setup to perfect seating positions and avoid mechanical hard crashes.
Variable End Stops
Accommodate multiple part sizes on a single fixture by adjusting the rear stopper up to 50 mm as needed.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX170-50S the Right Cylinder?
Select this 63 mm bore cylinder when an application requires a 120-170 mm stroke range and approximately 1559 N of pull force at 0.5 MPa. If your setup demands less force, stepping down to a 50 mm bore yields 825 N of pull force; if you need more clamping power, an 80 mm bore provides 2268 N. The adjustable stroke is ideal for product-size changeovers on a line, whereas a fixed SAI cylinder is better for static, unvarying end-positions.
Because this is a 170 mm stroke, side-load risks are moderate, but ensure proper external guiding if the load is heavy or off-center. To replace an ISO 15552 cylinder, match the 63 mm bore, 170 mm stroke, 50 mm adjustment, PT G3/8 port, and -S magnet. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2. For load-holding without live air, use a SAIL or BSAI cylinder 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 SAIJ63AX170-50S FAQ
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the 170 mm nominal stroke by up to 50 mm. This creates a usable travel window of 120-170 mm. The adjuster only sets the travel end and does not lock or hold the load without continuous air pressure.
At 0.5 MPa, it provides 1559 N of push force and 1402 N of pull force. At 0.9 MPa, the push force increases to 2805 N. The maximum force at 1.0 MPa is 318 kgf.
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