Airtac SAIJ125 Adjustable Cylinder SAIJ125BX55-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125BX55-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 55mm 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
- Stroke55 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 SAIJ125BX55-10
The AirTAC SAIJ125X55-10 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a usable travel window of 45 to 55 mm. It delivers 6136 N of pull force at 0.5 MPa, scaling up to 11045 N at 0.9 MPa, making it suited for heavy-duty positioning tasks. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement.
This configuration uses a SUS304 stainless steel rod for corrosion resistance and a PT tapered port thread. The rear adjustment screw acts as a travel stop for precise end-position tuning during commissioning, but it does not lock the load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ125 Adjustable Cylinder SAIJ125BX55-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125BX55-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 55 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 SAIJ125BX55-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×55 | 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 SAIJ125BX55-10 Is Used
Machine Changeover
Dial in the exact retract position within the 45-55 mm window during product size transitions without mechanical rebuilds.
Heavy Clamping
Apply up to 11045 N of clamping force at 0.9 MPa while fine-tuning the contact point to avoid deforming the workpiece.
Variable End Stops
Set precise retract limits on the fly for automated assembly lines requiring strict positional accuracy.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125BX55-10 the Right Cylinder?
Choose this adjustable model when your setup requires exact end-position tuning without adding external stops or swapping cylinders. If 6136 N of pull force at 0.5 MPa is excessive, stepping down to an 80 mm bore yields 2268 N. The 32 mm diameter rod and M27x2 thread handle substantial side loads, though any stroke over 300 mm still demands an external guide. This SKU omits the FB, CA, CB, and CR mounts, utilizing a reduced SAIJ set of Basic, FA, LB, TC, FTC, TCM1, and TCM2. To match this cylinder exactly, specify the 125 mm bore, 55 mm stroke, 10 mm adjustment, PT port, SUS304 rod, 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 SAIJ125BX55-10 FAQ
At 0.5 MPa it provides 6136 N of pull force and 8590 N of push force. At 0.9 MPa, the push force reaches 11045 N, matching the standard SAI thrust capabilities for heavy applications.
The rear stopper allows you to shorten the 55 mm nominal stroke by up to 10 mm, creating a 45-55 mm travel window. It functions as a position stop, not a lock, and requires live air to hold the load.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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