Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX35-10
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX35-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 35mm 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
- Stroke35 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX35-10
The AirTAC SAIJ63X35-10 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 25 to 35 mm, allowing you to dial back the nominal 35 mm stroke by up to 10 mm during commissioning. This bore size delivers 1559 N of push force at 0.5 MPa and 2182 N at 0.7 MPa, making it well-suited for medium-duty positioning tasks.
Built with an SUS420J2 stainless steel rod (option A) and PT tapered port threads, this extruded aluminum barrel design includes sensor grooves on both sides. The rear adjuster acts purely as a mechanical stop to fine-tune the end position without adding external stops, while the shared variable air cushions manage end-of-stroke deceleration across the 30-800 mm/s speed range.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX35-10 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX35-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 35 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 SAIJ63AX35-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×35 | 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 SAIJ63AX35-10 Is Used
Product Changeover Dial-In
Quickly adjust the 25-35 mm travel window on packaging lines when switching to a slightly shorter container format without replacing the cylinder.
End-Stop Commissioning
Fine-tune the final retract position during machine build to hit exact locating datums, using the rear screw instead of external shims.
Variable End Positioning
Set precise mechanical stops for clamping or pressing tasks where the exact 35 mm stroke needs a 10 mm trim to accommodate material thickness variations.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX35-10 the Right Cylinder?
Choose this 63 mm bore adjustable-stroke cylinder when your application requires precise end-position tuning at machine setup or during product changeover, rather than swapping a fixed-stroke SAI cylinder. If you need less force, stepping down to a 50 mm bore yields 982 N of push force at 0.5 MPa; for heavier loads, an 80 mm bore provides 2513 N.
Because the SAIJ63X35-10 uses a 20 mm rod with an M16x1.5 thread, it handles side loads better than smaller bores, though long unsupported strokes still need an external guide. Remember that the rear adjuster is a travel stop, not a lock; this plain SAIJ does not hold loads without live air, so for fail-safe load holding, consider an AirTAC SAIL or BSAI cylinder. It uses the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and is dimensionally interchangeable per ISO 15552.
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 SAIJ63AX35-10 FAQ
The 63 mm bore generates 1559 N of push force and 1402 N of pull force at 0.5 MPa. At 0.7 MPa, the push force increases to 2182 N.
The rear adjuster screw lets you shorten the effective travel from the nominal 35 mm down to 25 mm, creating a 25-35 mm usable window. This mechanical stop fine-tunes the retract end position but does not lock the load without live air pressure.
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