Airtac SAIJ125 Adjustable Cylinder SAIJ125BX65-30
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125BX65-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 65mm 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
- Stroke65 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 SAIJ125BX65-30
The AirTAC SAIJ125X65-30 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 65 mm stroke that can be dialed back by up to 30 mm, yielding a usable travel window of 35-65 mm for precise end-position tuning. Operating at 0.5 MPa, it delivers 6136 N of pull force and 8590 N of push force at 0.7 MPa, making it a robust choice for heavy-duty handling.
This specific configuration includes a SUS304 stainless steel rod (option B) for superior corrosion resistance and a PT tapered port thread. The extruded aluminum barrel integrates sensor grooves on both sides, ready for AirTAC CMSE reed or DMSE electronic sensors if a magnet is added later. The rear adjuster acts purely as a mechanical stop to set the travel end and does not hold the load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125BX65-30 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125BX65-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 65 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 SAIJ125BX65-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×65 | 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 SAIJ125BX65-30 Is Used
Machine Changeover
Dial the travel back from 65 to 35 mm instantly to accommodate a new product size on the line without disassembling the cylinder or adding external stops.
Heavy-Duty Positioning
Leverage 8590 N of push force at 0.7 MPa to move substantial masses into a precisely tuned end position set by the rear adjuster screw.
Corrosive Assembly Lines
Utilize the SUS304 stainless steel rod in washdown or chemical environments where a standard carbon steel rod would fail prematurely.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125BX65-30 the Right Cylinder?
Choose this 125 mm bore when 80 mm is insufficient, stepping up from the 80 mm bore's 2268 N pull force at 0.5 MPa to this model's 6136 N. An adjustable stroke is selected over a fixed SAI cylinder when a machine requires fine end-position tuning during commissioning or frequent product-size changeovers without swapping hardware. For load-holding without live air, the rear stop is insufficient; consider an external pilot-operated check valve or the SAIL/BSAI locking cylinder series.
To match this exact unit for an ISO 15552 replacement, specify the 125 mm bore, 65 mm stroke, 30 mm adjustment range, PT port thread, and SUS304 (B) rod material. It uses the reduced SAIJ mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR brackets. Since the stroke is under 300 mm, side-load stress on the 32 mm rod is minimal, though external guides are still recommended for heavy lateral 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 SAIJ125BX65-30 FAQ
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective stroke from the nominal 65 mm down to 35 mm, providing a 30 mm tuning window for exact end-position setting.
At 0.5 MPa, it provides 6136 N of pull force and 8590 N of push force. At 0.7 MPa, the push force increases to 8590 N.
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1-Year Warranty
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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Most inquiries answered within 7-8 hours.
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