Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX270-20S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX270-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 270mm 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
- Stroke270 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX270-20S
The AirTAC SAIJ63X270-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering a 1559 N pull force at 0.5 MPa. By turning the rear stopper screw, you can trim the nominal 270 mm travel back by up to 20 mm, creating a precise 250-270 mm usable window for end-position tuning. This built-in adjustability allows you to dial in the exact retract distance at commissioning without swapping the barrel or adding external stops.
This SKU features a SUS420J2 stainless steel rod for enhanced corrosion resistance and includes a piston magnet (-S) for position sensing. It pairs directly with AirTAC CMSE reed switches and DMSE solid-state electronic sensors fitted into the dual-side extruded barrel grooves. The 20 mm diameter rod and M16x1.5 thread provide robust resistance to side loads, though long unsupported strokes still require an external guide.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX270-20S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX270-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 270 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 SAIJ63AX270-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×270 | 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 SAIJ63AX270-20S Is Used
Machine Setup Tuning
Dial in the exact 250-270 mm retract position during commissioning to perfectly align tooling without machining external stopper blocks.
Product Changeover
Quickly adapt the cylinder's end-stop for different part sizes on a single conveyor line by adjusting the rear screw up to 20 mm.
Sensor Positioning
Leverage the integrated magnet and dual-side grooves to mount CMSE or DMSE sensors precisely along the adjustable travel window.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX270-20S the Right Cylinder?
Choose this 63 mm bore adjustable-stroke cylinder when your setup requires variable end-stops or frequent product-size changeovers on the line, rather than a fixed-stroke SAI. If your application needs less force, stepping down to a 50 mm bore yields a 825 N pull at 0.5 MPa; stepping up to an 80 mm bore provides 2268 N. The SAIJ63X270-20-S uses a PT tapered port, a SUS420J2 rod, and the standard SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR brackets. It is dimensionally interchangeable per ISO 15552. Note that the rear adjuster acts as a travel stop and the air cushions provide end-of-stroke deceleration, but neither holds the load without live air; for true load-holding, consider the SAIL or BSAI series. Because the 270 mm stroke is moderately long, ensure proper external guiding to prevent rod bending.
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 SAIJ63AX270-20S FAQ
At 0.5 MPa it provides a 1559 N push and a 1402 N pull. At the maximum 1.0 MPa operating pressure, it delivers a 318 kgf thrust.
The rear stopper screw lets you shorten the nominal 270 mm stroke by up to 20 mm, giving a usable travel window of 250-270 mm. The adjuster acts as a mechanical stop and does not lock the load without live air pressure.
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 SAIJ63AX270-20S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.