Airtac SAIJ125 Adjustable Cylinder SAIJ125AX195-50
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX195-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 195mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ125 mm
- Stroke195 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX195-50
The AirTAC SAIJ125X195-50 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 195 mm nominal travel to a precise window of 145-195 mm. Delivering 6136 N of push force at 0.5 MPa, it handles heavy positioning tasks efficiently. The extruded aluminum barrel features sensor grooves on both sides, and this configuration uses a SUS420J2 stainless steel rod with PT tapered ports.
This adjustable model shines during machine commissioning or product changeovers, letting you fine-tune the retract end-position without swapping out hardware. The rear adjuster functions purely as a travel stop and works alongside the variable air cushions at both ends to decelerate the load. It is not a locking mechanism, so live air pressure must be maintained to hold the load in place.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX195-50 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX195-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 195 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M27×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 40 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 (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ125 Adjustable Cylinder SAIJ125AX195-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | 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 SAIJ125 Adjustable Cylinder SAIJ125AX195-50 Is Used
Product Changeover
Quickly modify the retract end-stop by up to 50 mm when switching between differently sized parts on the same production line.
Machine Commissioning
Dial in the exact 145-195 mm travel distance during setup without machining new hard stops or replacing the cylinder.
Heavy Positioning
Leverage the 6136 N push force at 0.5 MPa to shift heavy jigs into their final machined position accurately.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX195-50 the Right Cylinder?
Choose this 125 mm bore when 80 mm (2513 N at 0.5 MPa) is insufficient or 160 mm (10053 N) provides excessive thrust for your frame. The 50 mm adjustment range is ideal for lines running mixed product sizes that require rapid end-stop modifications without adding external stops. To match this ISO 15552 cylinder for a replacement, verify the 195 mm stroke, 50 mm adjuster, PT porting, and mounting choice (Basic, FA, LB, TC, FTC, TCM1, or TCM2).
Because the stroke is 195 mm, the M27x2 rod thread and 32 mm rod diameter provide robust resistance to side loads, though an external guide is still recommended for heavy off-center loads. If your application requires the cylinder to hold its position without continuous air pressure, consider the SAIL (air-released lock) or BSAI (clamp-lock) variants instead.
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 SAIJ125 Adjustable Cylinder SAIJ125AX195-50 FAQ
At 0.5 MPa, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. At the maximum operating pressure of 1.0 MPa, it delivers up to 1251 kgf.
The rear adjuster acts as an external stopper, allowing you to shorten the effective travel from 195 mm down to 145 mm. This provides a 50 mm tuning window for precise positioning without replacing the cylinder.
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