Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X800-20
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X800-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 800mm 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
- Stroke800 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X800-20
The AirTAC SAIJ63X800-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel window down to 780-800 mm. Delivering a robust 1559 N pull force at 0.5 MPa, it is built around an extruded aluminum barrel with sensor grooves on both sides for flexible switch placement. This configuration uses a carbon steel piston rod and PT tapered port threads.
Because the nominal 800 mm stroke is quite long, the 20 mm M16x1.5 rod thread and 36 mm air cushioning handle substantial kinetic energy at the end of travel. The rear adjuster acts purely as a mechanical stop to set the exact retract position during commissioning; it does not hold the load without live air pressure. For secure load-holding, consider the SAIL or BSAI series.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X800-20 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X800-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 800 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 SAIJ63X800-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×800 | 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 SAIJ63X800-20 Is Used
Variable End-Stop Tuning
Dial in the exact retract position within the 780-800 mm window during machine setup to accommodate varying material thicknesses without external stops.
Product Changeover
Quickly adjust the retract end-position on packaging lines when switching product sizes, minimizing downtime and avoiding cylinder swaps.
Long-Stroke Assembly
Utilize the 800 mm travel for large-format component placement, relying on the 36 mm air cushions to absorb kinetic energy at the extended end.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X800-20 the Right Cylinder?
Choose this 63 mm bore when 50 mm falls short (providing only 825 N pull at 0.5 MPa) but an 80 mm bore is excessive. The adjustable stroke is ideal for machinery requiring precise end-position tuning during product changeover without swapping the cylinder. Mounting options include the reduced SAIJ set: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
When replacing an ISO 15552 cylinder, match the 63 mm bore, 800 mm stroke, 20 mm adjustment, PT G3/8 port, and carbon steel rod. Since the stroke is 800 mm, an external guide is strongly recommended to prevent excessive side-loading on the long, unsupported rod.
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 SAIJ63X800-20 FAQ
At 0.5 MPa, it provides 1559 N of push force and 1402 N of pull force. At the maximum 1.0 MPa operating pressure, it delivers 318 kgf.
The rear adjuster allows you to shorten the nominal 800 mm stroke by up to 20 mm, creating a usable travel window of 780 to 800 mm for precise end-position tuning at commissioning.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X800-20
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.