Airtac SAIJ125 Adjustable Cylinder SAIJ125AX165-40
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX165-40 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 a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ125 mm
- Stroke165 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX165-40
The AirTAC SAIJ125X165-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 8590N of push force at 0.7 MPa. It features a SUS420J2 stainless steel rod and PT tapered port threads. By turning the external rear stopper, you achieve a usable travel window of 125 to 165 mm without swapping out the entire actuator.
This adjustable range is ideal for fine-tuning end positions during commissioning or accommodating product size changeovers on the fly. The extruded aluminum barrel includes sensor grooves on both sides, ready for CMSE reed or DMSE electronic switches if a magnet is added later. It supports a standard mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX165-40 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX165-40 |
|---|---|
| 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 | 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 SAIJ125AX165-40
| 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 SAIJ125AX165-40 Is Used
Product Changeovers
Quickly dial in the 125-165 mm travel window when switching between product sizes on a packaging line, avoiding the need to physically swap cylinders.
End-Position Tuning
Fine-tune the retract stroke during machine commissioning to achieve exact material clamping without adding bulky external stopper blocks.
Heavy Forming Operations
Leverage the 8590N push force at 0.7 MPa for pressing or forming tasks where the exact bottoming-out position varies slightly per batch.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX165-40 the Right Cylinder?
Select this 125 mm bore when an application requires heavy thrust—up to 8590N push at 0.7 MPa—combined with on-the-fly stroke trimming. If your setup needs less force, stepping down to a 100 mm bore yields 5497N push at 0.7 MPa. Choose the SAIJ adjustable design over a fixed SAI cylinder when you need to dial in the retract end-position precisely during machine setup rather than relying on fixed stops.
Because the nominal stroke is 165 mm, an external guide is recommended for optimal side-load management. Remember that the rear adjuster functions strictly as a travel stop and does not hold the load without live air; for fail-safe load holding, consider an AirTAC SAIL or BSAI cylinder. To match this ISO 15552 interchangeable unit, specify: 125 mm bore, 165 mm stroke, 40 mm adjustment, PT ports, and no magnet.
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 SAIJ125AX165-40 FAQ
At 0.7 MPa operating pressure, this 125 mm bore cylinder provides 8590N of push force and 5734N of pull force. It can deliver a maximum push force of 11045N at 0.9 MPa.
The rear adjuster acts as an external stopper that allows you to shorten the effective stroke from the nominal 165 mm down to 125 mm. It sets the travel end and relies on the air cushion for deceleration, but it is not a lock and will not hold the load without continuous air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SAI Cylinders
Request a Quote for Airtac SAIJ125 Adjustable Cylinder SAIJ125AX165-40
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.