Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X325-30S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X325-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 325mm 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
- Stroke325 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X325-30S
The AirTAC SAIJ63X325-30-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 325mm stroke that can be fine-tuned backward by up to 30mm, yielding a usable travel window of 295-325mm. This built-in adjustability allows operators to dial in exact end positions during commissioning or product changeovers without swapping out the physical cylinder or adding external mechanical stops. The 63mm bore generates 1559N of push force and 1402N of pull force at 0.5MPa, making it well-suited for moderate-to-heavy industrial actuation.
Because this 325mm stroke exceeds the standard 300mm threshold, the 20mm carbon steel rod and M16x1.5 thread should be guided externally to prevent excessive side-loading and premature seal wear. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated magnet (-S) supports position detection via AirTAC CMSE reed switches or DMSE electronic solid-state sensors. It uses a PT G3/8 port and relies on variable air cushions at both ends to decelerate the piston smoothly.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X325-30S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X325-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 325 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 SAIJ63X325-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×325 | 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 SAIJ63X325-30S Is Used
Product Changeover
Quickly shift the effective stroke from 325mm down to 295mm to accommodate varying package sizes on a packaging line without changing hardware.
End-Position Tuning
Fine-tune the retract end position during machine commissioning to achieve exact clamping or pressing distances without external spacers.
Automated Assembly
Drive moderate-load assembly presses with 1559N of push force at 0.5MPa while retaining flexibility for future tooling adjustments.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X325-30S the Right Cylinder?
Select this 63mm bore adjustable cylinder when your machine setup requires variable end-stops rather than a fixed-length SAI model. If you need less force, stepping down to a 50mm bore yields 982N of push force at 0.5MPa; if your application demands higher thrust, moving up to an 80mm bore provides 2513N. Remember that the rear adjuster acts purely as a travel stop and the air cushions only manage deceleration—neither will hold a load without live air pressure. For load-holding requirements, consider an AirTAC SAIL pneumatic lock or BSAI clamp-lock cylinder. To replace an ISO 15552 cylinder, match the 63mm bore, 325mm stroke, 30mm adjustment, PT G3/8 port, and -S magnet, utilizing the Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounting interfaces (the SAIJ series omits FB, CA, CB, and CR mounts).
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 SAIJ63X325-30S FAQ
It features a rear adjusting screw that acts as an external stopper, allowing you to shorten the effective travel by up to 30mm. This creates a usable stroke window of 295-325mm, enabling fine-tuning of the end position without replacing the cylinder.
At 0.5MPa, it provides 1559N of push force and 1402N of pull force. The 63mm bore operates at a speed range of 30-800mm/s, and the -S magnet works with AirTAC CMSE and DMSE sensors for position feedback.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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