Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X90-50
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X90-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 90mm 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
- Stroke90 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X90-50
The AirTAC SAIJ63X90-50 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 90 mm stroke that can be dialed back by up to 50 mm, creating a highly flexible 40 to 90 mm usable travel window for precise end-position tuning. Delivering 1559 N of push force at 0.5 MPa, it fits mid-range automation tasks perfectly.
This 63 mm bore unit uses a G3/8 port and a 20 mm carbon steel rod with an M16x1.5 thread, offering robust resistance to side loading. It supports standard variable air cushions at both ends and utilizes a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Note that the rear adjuster acts strictly as a travel stop for deceleration, not as a load-holding lock.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X90-50 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X90-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 90 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 SAIJ63X90-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×90 | 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 SAIJ63X90-50 Is Used
Product Changeover
Dial in the 40 to 90 mm travel window on the fly to accommodate different package sizes on a packaging line without changing hardware.
End-Stop Calibration
Fine-tune the retract position during machine commissioning to prevent mechanical crashes, using the rear screw rather than external stops.
Adjustable Ejection
Vary the ejection distance of parts from a machining center based on material length, leveraging the 1559 N push force at 0.5 MPa.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X90-50 the Right Cylinder?
Choose this adjustable model when your machine setup requires variable end stops or frequent product-size changeovers without physically swapping cylinders. If your application needs less force, stepping down to a 50 mm bore yields 982 N at 0.5 MPa; stepping up to an 80 mm bore provides 2513 N. Because the stroke is under 300 mm, external side-load guides are less critical than on longer units, though the 20 mm rod still handles standard dynamic stresses well.
For an exact ISO 15552 replacement, match the 63 mm bore, 90 mm nominal stroke, 50 mm adjustment range, PT tapered port threads, and the specific mounting hardware. Since no magnet is specified, this configuration omits electronic DMSE or reed CMSE sensors. If true position holding without live air pressure is required, look instead to the SAIL or BSAI locking cylinder series.
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 SAIJ63X90-50 FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of push force and 1402 N of pull force. At a maximum 1.0 MPa, it can output up to 318 kgf.
The rear adjuster acts as a mechanical stop that shortens the retract stroke. For this 90 mm nominal stroke cylinder, you can trim up to 50 mm off the travel, creating a usable window between 40 mm and 90 mm. It functions as a stop, not a lock.
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