Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX135-10S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX135-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 135mm 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
- Stroke135 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX135-10S
The AirTAC SAIJ63X135-10-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that lets you trim the effective travel back by up to 10 mm, creating a usable 125-135 mm window for precise end-position tuning. It delivers a robust 1559 N pull force at 0.5 MPa, making it well-suited for moderate to heavy actuation tasks. The extruded aluminum barrel includes sensor grooves on both sides, and because this unit includes the -S magnet option, it directly supports AirTAC CMSE reed and DMSE solid-state switches for exact position feedback.
This model uses a SUS420J2 stainless steel piston rod (material code A) for high corrosion resistance, paired with PT tapered port threads. The rear adjustment screw functions strictly as a travel stop to dial in the retract distance during commissioning or product changeovers without swapping the cylinder. It does not lock the load; for holding loads without live air, a SAIL or BSAI locking cylinder is required.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX135-10S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX135-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 135 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 SAIJ63AX135-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×135 | 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 SAIJ63AX135-10S Is Used
Machine Changeover
Dial in the 125-135 mm retract stop during product size changeovers without adding external stopper blocks or swapping cylinders.
Precision End-Positioning
Fine-tune the final retract position within a 10 mm window to perfectly seat parts using the rear adjustment screw.
Sensor-Driven Feedback
Leverage the -S magnet and dual barrel grooves to mount CMSE or DMSE sensors for automated stroke confirmation.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX135-10S the Right Cylinder?
Choose this 63 mm bore when you need its specific 1559 N pull force at 0.5 MPa, stepping down from an 80 mm bore (2268 N pull) to save space, or up from a 50 mm bore (825 N pull) when higher thrust is required. The adjustable stroke is selected over a fixed SAI model when a machine requires fine end-stop tuning during setup or product size changeovers. To replace an ISO 15552 cylinder, match the 63 mm bore, 135 mm nominal stroke, 10 mm adjustment, G3/8 port, PT thread, and -S magnet.
Because the stroke is 135 mm, side-loading is less severe than on longer strokes, but the 20 mm rod diameter still requires external guiding if the load is heavy or off-center. Remember that the rear adjuster and the variable air cushions only decelerate the load; they do not act as a brake.
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 SAIJ63AX135-10S 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 the maximum 1.0 MPa pressure, it delivers up to 318 kgf.
The rear adjuster screw acts as a mechanical stop that shortens the nominal 135 mm stroke by up to 10 mm, providing a usable travel window of 125-135 mm. It allows precise end-position tuning at commissioning without moving the cylinder mount.
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