Airtac SAIJ125 Adjustable Cylinder SAIJ125X165-30S
The AirTAC SAIJ125 Adjustable Cylinder SAIJ125X165-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 165mm 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
- Stroke165 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 SAIJ125X165-30S
The AirTAC SAIJ125X165-30-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 135 to 165 mm.
This variant includes a magnetic piston for position detection and uses a PT tapered port thread. The extruded aluminum barrel features sensor grooves on both sides, allowing you to mount CMSE reed or DMSE electronic switches precisely where needed for automated feedback.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X165-30S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X165-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 165 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 SAIJ125X165-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×165 | 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 SAIJ125X165-30S Is Used
Product Changeover
Dial in the 135-165 mm travel window during format size shifts on packaging lines, avoiding the need to physically swap out the entire actuator.
Automated Assembly
Integrate the magnetic piston with DMSE electronic sensors to confirm end-of-stroke arrival while relying on the built-in air cushions for smooth deceleration.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X165-30S the Right Cylinder?
Select this 125 mm bore model when your application requires the 6136 N pull force at 0.5 MPa and benefits from on-the-fly end-position tuning without swapping cylinders. If your setup demands less force, stepping down to an 80 mm bore yields 2268 N pull at 0.5 MPa, whereas moving up to a 160 mm bore provides 9425 N pull. The 30 mm adjustment range is ideal for accommodating slight mechanical variances or product size changeovers directly at commissioning.
When matching an ISO 15552 replacement, verify the 125 mm bore, 165 mm stroke, 30 mm adjustment range, PT G1/2 port, and the -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR. Note that the rear adjuster acts strictly as a travel stop to set deceleration, not as a lock; for load-holding without live air pressure, consider an external rod lock, or use SAIL or BSAI cylinders.
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 SAIJ125X165-30S FAQ
At 0.9 MPa, the push force increases to 11045 N.
The rear adjuster screw acts as an external stopper that allows you to shorten the effective stroke by up to 30 mm, creating a usable travel window of 135 to 165 mm. It sets the travel end and relies on the air cushion for deceleration, but it does not lock or hold the load without continuous air pressure.
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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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