Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X85-30S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X85-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 85mm 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
- Stroke85 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X85-30S
The AirTAC SAIJ63X85-30-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 1559 N of push force at 0.5 MPa. Because it carries the -S magnet, it works seamlessly with AirTAC CMSE reed and DMSE solid-state sensors housed in the dual-side barrel grooves. The carbon steel piston rod features an M16x1.5 thread, providing a robust interface for your tooling.
This specific SKU features a 30 mm adjustment range, creating a usable travel window of 55 to 85 mm. The rear stopper screw allows you to dial in the exact end position during commissioning without adding bulky external stops. Note that this adjuster acts only as a travel stop and deceleration aid; it does not hold the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X85-30S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X85-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 85 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 SAIJ63X85-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×85 | 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 SAIJ63X85-30S Is Used
Machine Changeover
Dial in the 55-85 mm retract distance during product size changes without physically replacing the cylinder or adding external stopper blocks.
End-Position Tuning
Fine-tune the exact end-of-stroke position during commissioning to perfect a pressing or clamping operation within a 30 mm window.
Automated Clamping
Leverage the 1559 N push force at 0.5 MPa to secure workpieces, using the rear stop to set the exact clamping depth.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X85-30S the Right Cylinder?
Choose this 63 mm bore when a 50 mm bore (offering 982 N push at 0.5 MPa) lacks sufficient force, but you want to avoid the larger 80 mm footprint (2513 N at 0.5 MPa). The adjustable 55-85 mm travel window is ideal for product changeovers on a packaging line, letting you fine-tune the retract distance on the fly instead of swapping to a fixed-stroke SAI cylinder. For load-holding without continuous air pressure, you would need to step up to an SAIL or BSAI series, as the SAIJ adjuster is not a lock.
When replacing an ISO 15552 cylinder, match these exact parameters: 63 mm bore, 85 mm nominal stroke, 30 mm adjustment, PT tapered port threads, and the -S magnet option. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR brackets.
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 SAIJ63X85-30S FAQ
At 0.5 MPa it provides 1559 N of push force and 1402 N of pull force. The operational speed range is 30-800 mm/s.
The rear adjuster screw lets you shorten the 85 mm nominal stroke by up to 30 mm, giving an effective travel window of 55 to 85 mm. It acts as a mechanical stop and does not lock the load without air pressure.
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