Airtac SAIJ125 Adjustable Cylinder SAIJ125X750-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X750-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 750mm 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
- Stroke750 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X750-10
The AirTAC SAIJ125X750-10 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It delivers 6136N of push force at 0.5 MPa and provides a usable travel window of 740 to 750 mm. This built-in adjustability allows you to fine-tune the retract end position at commissioning without swapping out the entire cylinder.
It features a 32 mm carbon steel rod and a PT G1/2 port. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE or DMSE switches. This model uses a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X750-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X750-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 750 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 SAIJ125X750-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×750 | 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 SAIJ125X750-10 Is Used
Variable End-Stop Tuning
Dial in the exact 740 to 750 mm retract position during machine commissioning to perfect product ejection without machining custom spacers.
Product Changeover
Quickly adapt the stroke end-position on a packaging line when introducing a new carton size, using the rear screw to trim up to 10 mm of travel.
Heavy-Duty Assembly
Leverage the 6136N push force at 0.5 MPa to press large components into housings, while maintaining the ability to fine-tune the press depth.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X750-10 the Right Cylinder?
Choose this 125 mm bore when an 80 mm cylinder (providing 2513N push at 0.5 MPa) is insufficient, but a 160 mm bore is too large. The 10 mm rear adjuster is ideal for variable end-stops during machine setup or product changeover, replacing the need for fixed external stops. Because the rear adjuster acts only as a travel stop and does not hold the load without live air, use a SAIL or BSAI cylinder if load-holding is required.
With a 750 mm stroke, the unsupported rod is susceptible to side-loading; an external guide bearing is recommended to prevent premature seal wear. For a drop-in replacement, match the 125 mm bore, 750 mm stroke, 10 mm adjustment, PT G1/2 port, and the required mounting interface.
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 SAIJ125X750-10 FAQ
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke by up to 10 mm. This creates a 740 to 750 mm usable travel window, allowing precise end-position tuning without changing the cylinder.
At 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136N of push force and 5734N of pull force. It can deliver a maximum push force of 11045N at 0.9 MPa.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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