Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63BX175-100S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63BX175-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 175mm 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
- Stroke175 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63BX175-100S
The AirTAC SAIJ63X175-100-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel back by up to 100 mm. With a nominal 175 mm stroke, this specific SKU yields a wide usable travel window of 75 to 175 mm, letting you dial in the exact retract end-position during commissioning without swapping hardware or adding external stops. It delivers 1559 N of pull force at 0.5 MPa and up to 2805 N of push force at 0.9 MPa, placing it squarely in the mid-heavy force class for pneumatic actuation.
This variant is factory-configured with a SUS304 stainless steel rod for superior corrosion resistance and includes a magnet (-S) for electronic DMSE or reed CMSE position sensing in both sensor grooves. It uses a PT tapered port thread (G3/8) and relies on variable air cushions at both ends to decelerate the load. Remember that the rear adjuster acts purely as a travel stop to set the end position; it is not a mechanical lock and will not hold the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63BX175-100S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63BX175-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 175 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 SAIJ63BX175-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×175 | 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 SAIJ63BX175-100S Is Used
Machine Changeovers
Dial in the exact retract distance from 75 to 175 mm during product size changes on a packaging line without physically swapping out the cylinder.
Prototype Fixtures
Fine-tune the end-of-stroke position during new machine commissioning to find the perfect clamping distance before finalizing the setup.
Variable End-Stops
Use the wide 100 mm adjustment window to handle multiple part sizes on a single conveyor line, acting as a precise mechanical stop for varying workpieces.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63BX175-100S the Right Cylinder?
Choose this 63 mm bore adjustable-stroke cylinder when your machine requires variable end-stops or frequent product-size changeovers, stepping up from a 50 mm bore (which provides 825 N pull at 0.5 MPa) to handle heavier forces up to 2805 N. The wide 75 to 175 mm adjustment window is ideal for prototyping or flexible packaging lines where the retract distance changes per job, avoiding the need to stock multiple fixed-stroke SAI cylinders. Because the 175 mm stroke is below the 300 mm threshold, side-load risks are moderate, but the 20 mm rod diameter and M16x1.5 thread still require external guidance if subjected to lateral forces.
To replace this cylinder on an ISO 15552 machine, match the 63 mm bore, 175 mm nominal stroke, 100 mm adjustment range, PT G3/8 port, and the -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, deliberately omitting FB, CA, CB, and CR brackets. If your application requires true fail-safe load holding without live air, step over to the SAIL (air-released lock) or BSAI (clamp-lock) series instead of relying on the adjuster stop.
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 SAIJ63BX175-100S FAQ
At 0.5 MPa, this 63 mm bore cylinder provides 1559 N of pull force and 1559 N of push force. At its maximum operating pressure of 1.0 MPa, it can deliver up to 318 kgf of push force.
The rear adjusting screw acts as a mechanical stop that lets you shorten the 175 mm nominal stroke by up to 100 mm, creating a usable travel window of 75 to 175 mm. It sets the retract end-position but does not lock or hold the load without continuous air pressure.
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