Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63BX140-30S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63BX140-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 140mm 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
- Stroke140 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63BX140-30S
The AirTAC SAIJ63X140-30-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 110 to 140 mm, allowing you to dial back the nominal 140 mm stroke by up to 30 mm during commissioning without adding external stops. Delivering 1559 N of push force at 0.5 MPa, it fits perfectly into mid-range pneumatic setups.
This specific configuration includes a SUS304 stainless steel rod (option B) for superior corrosion resistance and a built-in magnet for position sensing. It works seamlessly with AirTAC CMSE reed and DMSE electronic solid-state switches mounted into the dual-side sensor grooves on the extruded aluminum barrel. Fluid supply must be filtered air, operating between 0.15 and 1.0 MPa.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63BX140-30S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63BX140-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 140 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 SAIJ63BX140-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×140 | 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 SAIJ63BX140-30S Is Used
Product Changeover
Quickly retune the 110-140 mm stroke window during format changes on packaging lines without swapping out the physical cylinder.
End-Position Tuning
Dial in the exact retract distance during machine commissioning to compensate for mechanical tolerances and ensure precise seating.
Corrosive Environments
Leverage the SUS304 stainless steel rod and durable TPU seals for reliable actuation in washdown or mildly corrosive industrial areas.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63BX140-30S the Right Cylinder?
Select this 63 mm bore unit when your application requires 1559 N push force at 0.5 MPa, stepping up from a 50 mm bore that yields 982 N. The 30 mm rear adjustment screw is ideal for product changeovers on a packaging line, letting operators fine-tune the retract end-position on the fly. Because the adjuster acts only as a travel stop and the air cushions manage deceleration, neither will hold the load without live air pressure. For failsafe load-holding, consider an external pilot-operated check valve or the AirTAC SAIL series.
When replacing an ISO 15552 cylinder, match these exact parameters: 63 mm bore, 140 mm nominal stroke, 30 mm adjustment range, PT tapered port threads, and the -S magnet option. Since the 140 mm stroke is relatively short for this bore size, side-loading is less of a concern than with longer strokes, but you should still ensure the M16x1.5 rod thread is aligned to prevent premature seal wear. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ63BX140-30S FAQ
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke from 140 mm down to 110 mm. It sets the travel end and works with the air cushions for deceleration, but it does not lock or hold the load without continuous air pressure.
At a 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of push force and 1402 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 318 kgf of push force.
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