Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX105-50S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX105-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 105mm 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
- Stroke105 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX105-50S
The AirTAC SAIJ63X105-50-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 105 mm stroke that can be fine-tuned down by up to 50 mm, yielding a usable travel window of 55 to 105 mm. Delivering 1559 N of push force at 0.5 MPa, it is built with an SUS420J2 stainless steel rod (code A) and a PT tapered port. The -S designation equips the extruded aluminum barrel with a magnet for CMSE reed and DMSE electronic sensors.
Because the rear screw acts purely as a mechanical stop to set the retract end position, it does not lock or hold the load without continuous live air. For applications requiring position holding without air pressure, consider the SAIL or BSAI variants. This model supports a standard 30-800 mm/s speed range and utilizes a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX105-50S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX105-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 105 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 SAIJ63AX105-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×105 | 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 SAIJ63AX105-50S Is Used
Machine Changeover
Dial in the 55 to 105 mm travel window during product size changes without replacing the cylinder or adding external stops.
End-Position Tuning
Fine-tune the retract end position at commissioning using the rear adjuster to perfect the mechanical stop location.
Variable End Stops
Adapt clamping or ejecting distances on the fly while relying on the 1559 N push force at 0.5 MPa for consistent actuation.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX105-50S the Right Cylinder?
Select this 63 mm bore cylinder when your setup requires precise end-position tuning during commissioning or product changeovers, avoiding the need to swap hardware or bolt on external stops. If your application needs less force, stepping down to a 50 mm bore yields 982 N of push force at 0.5 MPa; stepping up to an 80 mm bore provides 2513 N. Remember that the rear adjuster only decelerates and sets the travel end, so load-holding without live pressure requires a SAIL lock or external rod lock.
To match this exact configuration for an ISO 15552 replacement, specify a 63 mm bore, 105 mm stroke, 50 mm adjustment range, PT port thread, SUS420J2 rod material, and a magnet for CMSE / DMSE switches. Since the 105 mm stroke is well under the 1500 mm maximum standard stroke, it ships as a standard unit. The M16x1.5 rod thread and 20 mm rod diameter handle moderate side loads, though any long unsupported travel still necessitates 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 SAIJ63AX105-50S FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of push force and 1402 N of pull force. At 0.7 MPa, the push force increases to 2182 N.
The rear adjuster allows you to shorten the 105 mm nominal stroke by up to 50 mm, creating a usable travel window of 55 to 105 mm. The adjuster functions as a mechanical stop and does not lock the load without live air pressure.
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