Airtac SAIJ125 Adjustable Cylinder SAIJ125AX160-20
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX160-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 160mm 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
- Stroke160 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX160-20
The AirTAC SAIJ125X200-20 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to fine-tune the end-of-travel position during commissioning. With a nominal 160 mm stroke and a 20 mm adjustment range, it provides a usable travel window of 140-160 mm to perfectly dial in machine stops without adding external physical limits.
Delivering 6136 N of push force at 0.5 MPa, this robust unit features a SUS420J2 stainless steel rod for enhanced durability against corrosion and moisture. It utilizes PT tapered port threads (G1/2) and includes adjustable air cushions at both ends to decelerate heavy loads smoothly.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX160-20 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX160-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 160 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 SAIJ125AX160-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×160 | 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 SAIJ125AX160-20 Is Used
Machine Changeover
Quickly dial in the 140-160 mm travel window during product size transitions without disassembling fixtures or swapping cylinders.
End-Stop Tuning
Precisely set the retract end-position for heavy forming or pressing tasks, using the rear screw to hit exact dimensional tolerances.
Heavy Load Positioning
Leverage the 6136 N push force to move substantial masses while relying on the built-in air cushions to smoothly decelerate the payload.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX160-20 the Right Cylinder?
Choose this 125 mm bore when you need substantial thrust—stepping down to a 100 mm bore drops the 0.5 MPa push force to 3927 N, while moving up to a 160 mm bore increases it to 10053 N. The adjustable stroke is ideal for product changeovers where the exact end-position varies slightly, eliminating the need to physically swap out a fixed-stroke SAI cylinder.
Remember that the rear adjuster acts solely as a travel stop and does not hold the load without live air pressure; for true fail-safe load holding, consider an AirTAC SAIL or BSAI cylinder. For ISO 15552 replacement matching, specify: 125 mm bore, 160 mm stroke, 20 mm adjustment, PT ports, Basic/FA/LB/TC/FTC/TCM1/TCM2 mountings, and no magnet (-S).
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 SAIJ125AX160-20 FAQ
The rear adjusting screw acts as an external stopper that lets you shorten the effective travel by up to 20 mm. For this 160 mm stroke model, it creates a usable travel window of 140-160 mm, allowing precise end-position tuning without changing the cylinder itself.
At a 0.5 MPa operating pressure, this 125 mm bore cylinder generates 6136 N of push force and 5734 N of pull force. It can reach up to 8590 N push force at 0.7 MPa.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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