Airtac SAIJ125 Adjustable Cylinder SAIJ125AX475-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX475-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 475mm 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
- Stroke475 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX475-10S
The AirTAC SAIJ125X475-10-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the end-of-travel position. With a 475 mm nominal stroke and a 10 mm adjustment range, it provides a usable travel window of 465 to 475 mm for precise commissioning without external stops. The 125 mm bore delivers 6136 N of push force at 0.5 MPa, scaling up to 11045 N at 0.9 MPa.
This variant includes a SUS420J2 stainless steel piston rod (material code A) for improved corrosion resistance and is equipped with a magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors. It operates at speeds of 30-500 mm/s and utilizes a PT tapered port thread. The extruded aluminum barrel design integrates sensor grooves on both sides, ensuring straightforward switch mounting.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX475-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX475-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 475 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 SAIJ125AX475-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×475 | 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 SAIJ125AX475-10S Is Used
Variable End-Stop Positioning
Fine-tune the 465-475 mm travel window during machine commissioning to dial in exact end positions without swapping cylinders or adding external mechanical stops.
Product Size Changeover
Quickly adapt automated lines to new product lengths by adjusting the rear stopper screw, accommodating minor size variations efficiently.
Heavy-Duty Ejection
Leverage the 11045 N of push force at 0.9 MPa for ejecting heavy parts or pressing assemblies, using the adjustable stroke to account for material thickness.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX475-10S the Right Cylinder?
Choose this 125 mm bore cylinder when your application requires substantial thrust—6136 N at 0.5 MPa or 8590 N at 0.7 MPa. If your force requirements are lower, stepping down to a 100 mm bore yields 3927 N at 0.5 MPa, whereas moving up to a 160 mm bore provides 10053 N. The adjustable stroke is ideal for machine setups requiring variable end-stops or product changeovers, offering finer positioning control than a fixed-stroke SAI cylinder.
Because the 475 mm stroke is relatively long, it is critical to use an external guide to prevent excessive side-loading on the rod and M27x2 rod thread. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding without pressure, consider an AirTAC SAIL or BSAI cylinder. This model is dimensionally interchangeable per ISO 15552 and supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts.
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 SAIJ125AX475-10S FAQ
The rear adjusting screw acts as a mechanical stopper, allowing you to shorten the effective stroke by up to 10 mm. This creates a usable travel window of 465 to 475 mm. The adjuster sets the travel end but does not lock or hold the load without continuous air pressure.
At 0.5 MPa operating pressure, it provides 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force increases to 8590 N, and it can reach a maximum of 11045 N at 0.9 MPa.
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 SAIJ125AX475-10S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.