Airtac SAIJ125 Adjustable Cylinder SAIJ125BX130-20
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125BX130-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 130mm 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
- Stroke130 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 SAIJ125BX130-20
The AirTAC SAIJ125X130-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 110-130mm usable travel window. Delivering 6136N of push force at 0.5MPa, it is built for heavy-duty positioning. The extruded aluminum barrel includes sensor grooves on both sides, and this specific configuration uses a SUS304 stainless steel rod for superior corrosion resistance.
Unlike a fixed-stroke SAI, the external rear stopper lets you trim the retract end-position by up to 20mm during commissioning without adding external stops. The PT tapered port threads seal securely against pneumatic fittings. Remember that this rear adjuster acts only as a travel stop; it does not lock the load without continuous live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125BX130-20 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125BX130-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 130 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 SAIJ125BX130-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×130 | 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 SAIJ125BX130-20 Is Used
Product Changeovers
Dial in the 110-130mm travel window during format size changes on a packaging line without swapping out the entire cylinder assembly.
End-Position Tuning
Fine-tune the retract stopper by up to 20mm during machine commissioning to achieve perfect mechanical alignment without external shims.
Heavy-Duty Forming
Leverage the 6136N push force at 0.5MPa for pressing or holding applications where a stainless SUS304 rod prevents corrosion in harsh environments.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125BX130-20 the Right Cylinder?
Choose this 125mm bore when a 100mm cylinder (providing 3927N push at 0.5MPa) lacks the necessary thrust, but a 160mm bore is physically too large. The adjustable 110-130mm stroke is ideal for product changeovers where exact end-of-travel positioning varies slightly. To match this ISO 15552 cylinder for a replacement, verify the 125mm bore, 130mm stroke, -20 adjuster, PT G1/2 port, and SUS304 (B) rod material.
Because the 130mm stroke is relatively short for this large bore, side-load risks are minimal, but external guides are still recommended if the load is heavy. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR. For applications requiring the load to be held without air pressure, select a SAIL or BSAI cylinder instead of relying on this adjuster.
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 SAIJ125BX130-20 FAQ
At 0.5MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. At the maximum 1.0MPa pressure, it can deliver up to 1251kgf.
The rear adjuster screw allows you to shorten the nominal 130mm stroke by up to 20mm, creating a usable travel window of 110-130mm. This stopper only sets the end position and does not function as a lock to hold the load without air pressure.
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