Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX195-20
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX195-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 195mm 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
- Stroke195 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX195-20
The AirTAC SAIJ63X195-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel within a 175-195 mm window. Delivering 2182 N of push force at 0.7 MPa, it handles mid-range automation tasks with precision. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement.
This variant is configured with an SUS420J2 stainless steel rod (code A) for improved corrosion resistance and features PT tapered port threads with a G3/8 connection. The 20 mm adjustment screw acts purely as a mechanical stop to set the retract end position and does not lock the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX195-20 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX195-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 195 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 SAIJ63AX195-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×195 | 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 SAIJ63AX195-20 Is Used
Changeover Calibration
Dial in the exact 175-195 mm end position during product size changeovers without physically replacing the cylinder or adding external shims.
End-Stop Trimming
Use the 20 mm rear adjuster to precisely set the retract distance for tooling clearance on automated machining lines.
Assembly Positioning
Leverage the 2182 N push force at 0.7 MPa to move and position components, fine-tuning the stroke to accommodate varying part dimensions.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX195-20 the Right Cylinder?
Choose this 63 mm bore cylinder when you need 1559 N of thrust at 0.5 MPa, stepping up from a 50 mm bore that provides 982 N, or down from an 80 mm bore yielding 2513 N. The adjustable stroke is ideal for machine setups requiring variable end-stops during product changeovers, eliminating the need to swap out a fixed-stroke SAI cylinder. For drop-in compatibility, ensure your setup matches the ISO 15552 mounting interface and the SAIJ subset of mounts: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Because the stroke is under 300 mm, side-load stress is moderate, but the 20 mm rod diameter and M16x1.5 rod thread still require external guiding for heavy lateral loads. Remember that the rear adjuster only trims the travel distance; it cannot hold a load in place without continuous air pressure. For positive load-holding, consider an external pilot-operated check valve or a SAIL locking cylinder.
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 SAIJ63AX195-20 FAQ
At 0.5 MPa, it provides 1559 N of push force and 1402 N of pull force. At 0.7 MPa, the push force increases to 2182 N, with a maximum push force of 2805 N at 0.9 MPa.
The rear adjuster acts as a mechanical stop that lets you shorten the nominal 195 mm stroke by up to 20 mm, creating a usable travel window of 175-195 mm. It only sets the end position and does not lock the load without live air pressure.
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