Airtac SAIJ125 Adjustable Cylinder SAIJ125X85-75
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X85-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 85mm 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
- Stroke85 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X85-75
The AirTAC SAIJ125X85-75 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 6136N of thrust at 0.5 MPa. By incorporating a 75mm adjustment mechanism on an 85mm nominal stroke, it provides a usable travel window of 10 to 85mm. This allows operators to dial in the exact retract position during commissioning without swapping out the physical unit.
Built with a 32mm carbon steel piston rod and M27x2 rod threading, it handles substantial side loads while accepting PT tapered port connections for reliable sealing. The extruded aluminum barrel features sensor grooves on both sides, ready to accept CMSE reed or DMSE electronic switches if a magnet is added later. Unlike fixed-stroke SAI models, this variant utilizes a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) to accommodate the external adjuster hardware.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X85-75 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X85-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 85 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 SAIJ125X85-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×85 | 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 SAIJ125X85-75 Is Used
Variable End-Stop Tuning
Dial in the exact retract distance between 10 and 85mm during machine commissioning without adding external stopper blocks.
Product Size Changeover
Quickly adapt the retract stroke on packaging lines when processing different product sizes, saving downtime on physical cylinder swaps.
Heavy-Duty Positioning
Leverage 6136N of thrust to move heavy fixtures into a tuned end-position, relying on the M27x2 threaded rod for robust attachment.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X85-75 the Right Cylinder?
Choose this 125mm bore when 6136N of thrust at 0.5 MPa is required, or step down to the 80mm bore providing 2513N if your load is lighter. The 75mm adjustment range is ideal for product changeovers where the retract end-stop frequently shifts. Remember that the rear adjuster acts purely as a mechanical stop and does not hold the load without live air; for true load-holding without pressure, consider an external pilot-operated check valve or the BSAI clamp-lock series. To match this ISO 15552 replacement exactly, specify the 85mm stroke, 75mm adjustment, PT port, and standard carbon steel rod.
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 SAIJ125X85-75 FAQ
It has an 85mm nominal stroke with a 75mm rear adjuster, creating an adjustable travel window of 10 to 85mm. You can fine-tune the retract end-position anywhere within that range at commissioning.
No. The rear adjuster is a travel stop that sets the end position, not a lock. The cylinder and air cushions cannot hold a load without live air pressure; for load-holding, use a SAIL lock or BSAI clamp-lock cylinder.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SAI Cylinders
Request a Quote for Airtac SAIJ125 Adjustable Cylinder SAIJ125X85-75
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.