Airtac SAIJ125 Adjustable Cylinder SAIJ125X700-40S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X700-40S 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 SAIJ125X700-40S
The AirTAC SAIJ125X700-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 6136N of push force at 0.5 MPa. It features a 125mm bore, a 700mm nominal stroke, and a built-in magnet for position sensing. An external adjusting screw allows you to shorten the effective stroke by up to 40mm, creating a precise 660-700mm usable travel window for fine-tuning end positions during commissioning.
This model incorporates a 32mm carbon steel piston rod with an M27x2 thread, paired with PT tapered port threads (G1/2). It supports operating speeds of 30-500mm/s and includes variable air cushions at both ends to manage deceleration. The extruded aluminum barrel houses sensor grooves on both sides, fully compatible with AirTAC CMSE reed and DMSE electronic solid-state switches.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X700-40S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X700-40S |
|---|---|
| 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 SAIJ125X700-40S
| 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 SAIJ125X700-40S Is Used
Product Changeovers
Dial in the 660-700mm travel window during format size changes on packaging lines without physically replacing the actuator.
Machine Setup
Fine-tune the retract end-position at commissioning to achieve exact mechanical alignment without adding external stopper blocks.
Heavy Forming
Leverage the 6136N push force at 0.5 MPa for pressing and forming tasks that require precise bottoming-out depth control.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X700-40S the Right Cylinder?
Select this 125mm bore actuator when an application requires substantial thrust—6136N at 0.5 MPa or 8590N at 0.7 MPa. If your setup demands less force, stepping down to a 100mm bore yields 3927N at 0.5 MPa. The adjustable stroke is chosen over a fixed SAI cylinder when you need variable end-stops or product-size changeovers without swapping hardware. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Because this unit features a 700mm stroke, the 32mm rod requires an external guide to prevent excessive side-loading and premature seal wear. To match this ISO 15552 dimensionally interchangeable cylinder, specify: 125mm bore, 700mm stroke, 40mm adjustment, PT port thread, required mounting, and the -S magnet. Note that the rear adjuster acts only as a travel stop; for load-holding without live air pressure, consider an AirTAC SAIL or BSAI 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 SAIJ125X700-40S FAQ
At 0.5 MPa it provides 6136N of push force and 5734N of pull force. At 0.7 MPa, the push force increases to 8590N.
A rear adjusting screw acts as a stopper, allowing you to trim the 700mm nominal stroke back by up to 40mm. This creates a 660-700mm usable travel window for fine-tuning the end position.
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 SAIJ125X700-40S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.