Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX170-75S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX170-75S 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 SAIJ63AX170-75S
The AirTAC SAIJ63X170-75-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel down from 170 mm to a 95 mm minimum, creating a 95-170 mm usable window. This on-board stopper mechanism enables precise end-position calibration at commissioning or during product changeovers without swapping the barrel or adding external stops. Delivering 1559 N of push force at 0.5 MPa, it handles robust actuation tasks while maintaining the standard ISO 15552 mounting interface.
This SKU is configured with a SUS420J2 stainless steel rod for superior corrosion resistance and includes a built-in magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel incorporates sensor grooves on both sides for flexible switch mounting. It uses PT G3/8 ports and features variable air cushions at both ends to decelerate the load smoothly.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX170-75S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX170-75S |
|---|---|
| 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 SAIJ63AX170-75S
| 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 SAIJ63AX170-75S Is Used
Variable End-Stop Calibration
Dial in the exact retract position within the 95-170 mm window during machine commissioning without physically replacing the cylinder or adding external stopper blocks.
Product Size Changeover
Quickly adapt the stroke distance on a packaging line when product dimensions change, using the rear screw to shorten the travel for smaller items.
Robust Stainless Rod Actuation
Leverage the 1559 N push force and SUS420J2 stainless rod for positioning tasks in environments where minor corrosion resistance is an advantage.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX170-75S the Right Cylinder?
Select this 63 mm bore when an application requires roughly 1559 N of push force at 0.5 MPa, or 2182 N at 0.7 MPa. If your setup needs less force, stepping down to a 50 mm bore yields 982 N at 0.5 MPa. Choose this adjustable-stroke variant over a fixed-stroke SAI cylinder when you need variable end-stops to dial in the exact travel distance during machine setup. The rear adjuster acts purely as a travel stop to set the retract position; it does not hold the load without live air pressure. For true load-holding without continuous air, consider an AirTAC SAIL pneumatic lock or BSAI clamp-lock cylinder.
When replacing an ISO 15552 cylinder, match the 63 mm bore, 170 mm nominal stroke, 75 mm adjustment range, PT G3/8 port thread, and the -S magnet requirement. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting the FB, CA, CB, and CR styles. Because the 170 mm stroke is below the 300 mm threshold, side-load stress is moderate, but long unsupported loads should still use an external guide to protect the rod and thread.
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 SAIJ63AX170-75S FAQ
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke from the 170 mm nominal distance down to 95 mm. This provides a 95-170 mm usable travel window for fine-tuning the end position at commissioning. The adjuster only sets the travel end and does not lock or hold the load without live air pressure.
The 63 mm bore generates 1559 N of push force and 1402 N of pull force at 0.5 MPa. If you increase the operating pressure to 0.7 MPa, the push force rises to 2182 N.
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