Airtac SAIJ125 Adjustable Cylinder SAIJ125X600-75S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X600-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 600mm 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
- Stroke600 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X600-75S
The AirTAC SAIJ125X600-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering a robust 8590 N pull force at 0.7 MPa. It features a carbon steel piston rod and a PT tapered port thread. Because this unit includes a magnet (-S), it is fully compatible with AirTAC CMSE reed and DMSE electronic sensors for precise position detection.
The integrated rear adjusting stopper allows you to fine-tune the effective travel within a 525 to 600 mm window. This means you can dial in the exact retract position during commissioning or product changeovers without swapping the cylinder or adding external stops. The adjuster acts purely as a travel stop and works alongside the variable air cushions at both ends to decelerate the load, but it does not hold the load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X600-75S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X600-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 600 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 SAIJ125X600-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×600 | 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 SAIJ125X600-75S Is Used
Variable Length Positioning
Dial in the retract stop within the 525-600 mm window to handle varying material lengths on a single conveyor line without changing hardware.
Machine Changeover
Quickly fine-tune the end-of-stroke position during product format changes, utilizing the rear adjuster instead of physically swapping out a fixed-stroke SAI cylinder.
Heavy Assembly Pressing
Leverage the 8590 N pull force at 0.7 MPa to seat heavy components, using the PT tapered port and built-in air cushions to manage deceleration safely.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X600-75S the Right Cylinder?
Choose this 125 mm bore when an 80 mm bore (providing 3518 N push at 0.7 MPa) lacks the necessary thrust for heavy positioning tasks. The 75 mm adjustment range is ideal for machinery requiring variable end-stops to accommodate different material lengths on the fly. For load-holding without continuous air pressure, this cylinder is not a lock; you would need to look at the SAIL or BSAI series, or integrate an external rod lock.
As a dimensionally interchangeable ISO 15552 cylinder, it matches standard mounting footprints using the SAIJ subset of accessories: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Because the 600 mm stroke is substantial and the 32 mm rod is heavy, an external guide rail is highly recommended to prevent excessive side-loading and rod deflection during operation.
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 SAIJ125X600-75S FAQ
The rear adjuster is a mechanical stop that lets you shorten the nominal 600 mm stroke by up to 75 mm, providing a usable travel window of 525 to 600 mm. It allows precise end-position tuning at commissioning without adding external stops.
At 0.7 MPa, this 125 mm bore cylinder provides 8590 N of pull force and 11045 N at 0.9 MPa. The operational speed range for this bore size is 30-500 mm/s.
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 SAIJ125X600-75S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.