Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X900-30S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X900-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 900mm 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
- Stroke900 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X900-30S
The AirTAC SAIJ63X900-30-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 900 mm travel by up to 30 mm for a usable window of 870-900 mm. Delivering 2182 N of push force at 0.7 MPa, it handles substantial workloads while utilizing a carbon steel rod and PT G3/8 tapered ports. The integrated -S magnet enables precise end-position detection using AirTAC CMSE reed or DMSE solid-state sensors housed in the dual-side barrel grooves.
Because the adjuster acts purely as a mechanical stop at the retract end, it does not lock or hold the load without continuous live air pressure. For position-holding safety requirements, consider the SAIL or BSAI series instead. This model supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR configurations.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X900-30S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X900-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 900 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 SAIJ63X900-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×900 | 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 SAIJ63X900-30S Is Used
Machine Changeover
Quickly reposition the retract stop within the 870-900 mm window when switching production lines to different product lengths without swapping hardware.
Assembly Calibration
Fine-tune the exact end-of-stroke position during initial setup to ensure perfect alignment and pressing force for critical components.
Variable End Stops
Adjust the stroke dynamically on automated material handling lines to accommodate varying package or pallet sizes on the fly.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X900-30S the Right Cylinder?
Selecting this 63 mm bore over a smaller 50 mm variant significantly boosts thrust, stepping up from 1374 N to 2182 N at 0.7 MPa, which is critical for overcoming higher friction or heavier tooling. The adjustable stroke is chosen over a fixed SAI cylinder when you need to fine-tune the end position during commissioning or accommodate product changeovers without adding external stops. To replace this unit, match the 63 mm bore, 900 mm stroke, 30 mm adjustment, PT G3/8 port, and the -S magnet requirement.
At 900 mm of travel, the 20 mm diameter rod is highly susceptible to side-loading and deflection. An external guide rail is strongly recommended to prevent premature seal wear and binding, as the rear adjuster only sets the travel end and does not decelerate the mass dynamically like the air cushions do.
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 SAIJ63X900-30S FAQ
At an operating pressure of 0.7 MPa, this 63 mm bore cylinder provides 2182 N of push force and 1402 N of pull force. At the maximum 1.0 MPa, it delivers up to 318 kgf.
The rear external screw acts as a mechanical stopper, allowing you to shorten the effective stroke from 900 mm down to 870 mm. It sets the travel end but does not lock the load without live air pressure.
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