Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX35-30
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX35-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 35mm 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
- Stroke35 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX35-30
The AirTAC SAIJ63X35-30 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 1559N of push force at 0.5 MPa. It features an SUS420J2 stainless steel rod and PT tapered ports. Because the nominal 35mm stroke can be dialed back by up to 30mm, you gain a precise 5-35mm usable travel window for highly confined positioning tasks.
This adjustable stopper lets you fine-tune the end position during commissioning without swapping out the actuator or adding external stops. The rear adjuster acts purely as a travel stop and relies on the built-in air cushion for deceleration, meaning it cannot hold a load without continuous live air pressure. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX35-30 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX35-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 35 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 SAIJ63AX35-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×35 | 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 SAIJ63AX35-30 Is Used
Short-Stroke Clamping
Dial in the exact clamping depth on delicate workpieces using the 5-35mm travel window, preventing damage during automated machining operations.
Product Changeover
Rapidly adjust the rear stopper to accommodate different product heights on a packaging line without physically changing the cylinder.
End-Position Tuning
Fine-tune the retracted end position during machine commissioning to perfectly align tooling without adding bulky external mechanical stops.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX35-30 the Right Cylinder?
Choose this 63mm bore when you need more power than a 50mm cylinder (which provides 982N push at 0.5 MPa) but want to avoid the bulk of an 80mm option. The 30mm adjustment range is ideal for applications requiring variable end-stops or frequent product-size changeovers, providing setup flexibility that a fixed-stroke SAI cylinder cannot match. When replacing an ISO 15552 actuator, match the 63mm bore, 35mm stroke, PT port thread, and your required mounting style.
Since this is a short-stroke actuator, the 20mm rod diameter handles side loads well, though any application should still ensure proper alignment to prevent seal wear. The SAIJ supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR options. Note that without a magnet, this specific configuration does not support CMSE or DMSE sensors.
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 SAIJ63AX35-30 FAQ
At 0.5 MPa operating pressure, this 63mm bore cylinder provides 1559N of push force and 1402N of pull force. It can reach up to 318 kgf at its maximum 1.0 MPa pressure rating.
The rear adjuster screw allows you to shorten the effective stroke from its 35mm nominal length down to as little as 5mm. This creates a 5-35mm usable travel window for precise end-position tuning without replacing the cylinder.
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