Airtac SAIJ125 Adjustable Cylinder SAIJ125AX160-30
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX160-30 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 SAIJ125AX160-30
The AirTAC SAIJ125X160-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It delivers 6136N of push force at 0.5MPa and provides a usable travel window of 130-160mm, allowing you to trim up to 30mm of the nominal stroke during commissioning without adding external stops. The extruded aluminum barrel includes sensor grooves on both sides, and this specific configuration uses a SUS420J2 stainless steel rod for superior corrosion resistance.
This model operates at 30-500mm/s and uses PT tapered G1/2 ports. The rear adjuster acts purely as a travel stop to fine-tune the retract end position and is not a lock, meaning the cylinder cannot hold a load without live air pressure. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB and rear pivot options.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX160-30 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX160-30 |
|---|---|
| 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 SAIJ125AX160-30
| 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 SAIJ125AX160-30 Is Used
Variable End-Stop Machining
Dial in the exact 130 to 160mm clamping depth during machine setup to accommodate different part lengths without swapping cylinders.
Product Line Changeover
Quickly fine-tune the retract position by up to 30mm on a packaging line when switching between product sizes.
Assembly Press Tuning
Precisely set the bottoming force and travel distance for press-fit operations, relying on the rear stopper for exact end-position tuning.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX160-30 the Right Cylinder?
Choose this 125mm bore when a 100mm bore (providing 3927N push at 0.5MPa) is insufficient, but a 160mm bore (delivering 10053N) would be overkill. The adjustable 130-160mm travel window is ideal for product changeovers where exact end-of-stroke positioning varies slightly between batches. If you need to hold a load without continuous air pressure, select the SAIL or BSAI series instead, as the SAIJ rear screw is only a stop. When replacing an ISO 15552 cylinder, match the 160mm stroke, 30mm adjustment, PT port, and desired mounting. Because the stroke is 160mm, ensure external guides support any side loads.
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 SAIJ125AX160-30 FAQ
At 0.5MPa operating pressure, it provides 6136N of push force and 5734N of pull force. At 0.9MPa, the push force increases to 11045N.
The rear adjuster lets you shorten the 160mm nominal stroke by up to 30mm, creating a usable travel window of 130-160mm. It acts as a mechanical stop to fine-tune the end position and does not lock the load without air pressure.
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Standard models usually ship in 3-4 days.
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