Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-100
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 185mm 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
- Stroke185 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-100
The AirTAC SAIJ63X185-100 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers a robust 1559N push force at 0.5MPa, utilizing a G3/8 port and an M16x1.5 piston rod. This specific variant incorporates a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and includes PT tapered port threads.
With a 100mm adjustment range, this model transforms the 185mm nominal stroke into a highly versatile 85-185mm usable travel window. This broad tuning capacity allows operators to dial in the exact retract end-position during commissioning or product changeovers without swapping the cylinder or adding external stops. The extruded aluminum barrel retains sensor grooves on both sides for flexible switch mounting.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-100 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 185 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 SAIJ63AX185-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×185 | 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 SAIJ63AX185-100 Is Used
Product Changeover
Quickly reconfigure the retract distance from 85 to 185mm on packaging lines when switching to different product sizes without changing hardware.
Commissioning Calibration
Fine-tune the exact end-position during machine setup to achieve precise mechanical alignment without machining custom external spacers.
Variable End Stops
Provide a flexible datum point in automated assembly stations where the required stroke length must be dialed in per specific workpiece dimensions.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-100 the Right Cylinder?
Selecting this 63mm bore cylinder makes sense when an application requires significant flexibility in the final end-stop position, as the 100mm adjuster provides a much wider tuning band than standard short-adjustment variants. If the project demands higher force, stepping up to the 80mm bore yields 2513N at 0.5MPa; conversely, dropping to a 50mm bore reduces output to 982N. For fixed-travel setups without the need for commissioning tweaks, the standard SAI cylinder is a simpler alternative.
When integrating this ISO 15552 interchangeable cylinder, match the exact 63mm bore, 185mm stroke, 100mm adjustment, PT ports, and SUS420J2 rod material. Note that the rear adjuster functions strictly as a travel stop, not a lock; the cylinder cannot hold a load without live air, so applications requiring true load-holding should utilize a SAIL or BSAI variant. Since the stroke is under 300mm, side-load stress is manageable, but external guides are still recommended for heavy radial loads.
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 SAIJ63AX185-100 FAQ
At a standard 0.5MPa operating pressure, this 63mm bore cylinder provides 1559N of push force and 1402N of pull force. At 0.7MPa, the push force increases to 2182N.
The rear adjuster acts as a mechanical stop that lets you trim the effective travel back by up to 100mm. This creates an 85-185mm usable stroke window, allowing you to set the exact retract position without replacing the cylinder.
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