Airtac SAIJ125 Adjustable Cylinder SAIJ125X195-40S
The AirTAC SAIJ125 Adjustable Cylinder SAIJ125X195-40S 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ125 mm
- Stroke195 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X195-40S
A carbon steel rod with an M27x2 thread handles heavy loads, while the integrated -S magnet enables position feedback via AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel features sensor grooves on both sides for flexible switch mounting.
This SKU provides a usable travel window of 155-195 mm, allowing you to dial back the nominal 195 mm stroke by up to 40 mm. This built-in adjustability lets you fine-tune end positions at commissioning or during product changeovers without physically swapping the cylinder or adding external stops. The rear screw acts purely as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X195-40S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X195-40S |
|---|---|
| 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 | 5734 N | 5734 N |
| 0.7 MPa | 8027 N | — |
| Max (@1.0 MPa) | 1169 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ125 Adjustable Cylinder SAIJ125X195-40S
| 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 SAIJ125X195-40S Is Used
Machine Changeovers
Dial in the 155-195 mm stroke window during product size changes to set new retract positions rapidly without changing hardware.
Press Fit Tuning
Fine-tune the end-of-stroke contact force for heavy 6136N press operations at commissioning to prevent part damage.
Diversion Stops
Adjust the retract distance on the fly to accommodate varying package lengths on a single conveying line.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X195-40S the Right Cylinder?
The adjustable 155-195 mm stroke is ideal for setups requiring variable end-stops, whereas a fixed-stroke SAI cylinder would require shims or manual machining to alter the travel. For exact ISO 15552 replacement matching, verify the 195 mm stroke, 40 mm adjustment range, PT tapered port thread, and the required -S magnet configuration.
Because the rear adjuster only sets the travel end and relies on air cushions for deceleration, it cannot hold a load dynamically. If your application requires fail-safe load holding without continuous air pressure, consider the AirTAC SAIL air-released lock or BSAI clamp-lock cylinders instead of the SAIJ series.
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 SAIJ125X195-40S FAQ
At the maximum 1.0 MPa pressure, the push force reaches 11045N.
The rear adjuster screw allows you to shorten the effective travel from the 195 mm nominal stroke down to 155 mm. It functions as a mechanical stop for end-position tuning and does not lock the load without live air.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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