Airtac SAIJ125 Adjustable Cylinder SAIJ125BX80-75S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125BX80-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 80mm 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
- Stroke80 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 SAIJ125BX80-75S
The AirTAC SAIJ125X80-75-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 6136N push force at 0.5 MPa, utilizing a 32mm SUS304 stainless steel rod (code B) that provides excellent corrosion resistance for demanding environments. The integrated magnet (-S) enables seamless position detection.
Featuring a 75mm adjustment range, this model transforms its nominal 80mm stroke into a highly versatile 5-80mm usable travel window. This allows operators to dial in exact end positions during commissioning without external stops. It includes PT tapered ports (G1/2), dual-sided sensor grooves for CMSE reed or DMSE electronic switches, and a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ125 Adjustable Cylinder SAIJ125BX80-75S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125BX80-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 80 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 SAIJ125BX80-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×80 | 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 SAIJ125BX80-75S Is Used
Variable Product Changeover
Quickly reconfigure the travel window from 5 to 80mm on packaging lines handling different container sizes without swapping the cylinder.
Precision End-Stop Tuning
Fine-tune the retract end position during machine commissioning to achieve exact clamping or pressing depths using the rear adjustment screw.
Heavy-Duty Positioning
Leverage the 6136N thrust and durable SUS304 rod to move heavy pallets or industrial fixtures into exact alignment before a secondary operation.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125BX80-75S the Right Cylinder?
Selecting this 125mm bore cylinder makes sense when an application requires substantial force but variable end-stops. If the 6136N push force at 0.5 MPa exceeds your requirement, stepping down to an 80mm bore yields 2513N, saving space and air consumption. Conversely, heavier loads might require the 160mm bore at 10053N. Here, the 75mm adjuster is ideal for product-size changeovers on a line.
When specifying an ISO 15552 replacement, match the 125mm bore, 80mm nominal stroke, 75mm adjustment, PT port thread, and -S magnet. Remember that the rear adjuster acts purely 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. Furthermore, the 32mm SUS304 rod handles side loads well, but long unsupported strokes still require external guide rails.
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 SAIJ125BX80-75S FAQ
At a standard 0.5 MPa operating pressure, this 125mm bore cylinder generates 6136N of push force and 5734N of pull force. It can reach a maximum push force of 11045N at 0.9 MPa.
The rear adjuster screw allows you to trim the effective travel, creating a usable stroke window of 5 to 80mm. This stopper fine-tunes the end position but does not lock the load without continuous air pressure.
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