Airtac SAIJ125 Adjustable Cylinder SAIJ125AX700-100
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX700-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 700mm 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
- Stroke700 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX700-100
The AirTAC SAIJ125X700-100 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 600-700mm usable travel window from its 700mm nominal stroke. Equipped with a robust 32mm SUS420J2 stainless steel rod and PT tapered port threads, it delivers 6136N of push force at 0.5MPa. This bore operates at a controlled speed range of 30-500mm/s and uses 40mm cushions at both ends to decelerate heavy moving loads smoothly.
The external rear stopper allows technicians to dial in the exact retract position during commissioning without swapping out the cylinder or fabricating external stops. It uses a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR brackets. The extruded aluminum barrel includes sensor grooves on both sides, ready for CMSE reed or DMSE electronic switches if a magnet is specified later.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX700-100 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX700-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 700 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 SAIJ125AX700-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×700 | 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 SAIJ125AX700-100 Is Used
Variable End-Stop Machining
Fine-tune the 600-700mm retract position on the fly to accommodate different part lengths without repositioning the entire fixture.
Product Line Changeover
Rapidly adjust the stroke end-position during format size changes on packaging or conveying lines to minimize downtime.
Heavy Assembly Pressing
Leverage the 6136N push force at 0.5MPa to seat large components, using the adjustable stop to dial in the exact pressing depth.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX700-100 the Right Cylinder?
Choose this 125mm bore when an 80mm bore (delivering 2513N push at 0.5MPa) cannot provide enough thrust, but stepping up to a 160mm bore (10053N at 0.5MPa) would be excessive. The 100mm adjustment range is ideal for product-size changeovers on a line, allowing the end-stop to be reconfigured rapidly without altering the fixed mounting infrastructure. Because the nominal stroke is 700mm, the long unsupported piston rod requires an external guide to prevent excessive side-loading and premature seal wear.
When specifying an ISO 15552 replacement, match the 125mm bore, 700mm stroke, 100mm adjustment, PT thread type, and the required mounting bracket. Remember that the rear adjuster acts only as a travel stop and the air cushions handle deceleration; neither will hold a load safely without live air pressure. For true load-holding in the event of air loss, integrate an external pilot-operated check valve or select a related SAIL or BSAI series cylinder.
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 SAIJ125AX700-100 FAQ
At 0.5MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. At 0.7MPa, the push force increases to 8590N.
The rear adjuster acts as a mechanical stopper that lets you shorten the effective stroke by up to 100mm, providing a usable travel window between 600mm and 700mm. It sets the end position but does not lock the load without live air pressure.
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 SAIJ125AX700-100
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.