Airtac SAIJ125 Adjustable Cylinder SAIJ125X475-100
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X475-100 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 SAIJ125X475-100
The AirTAC SAIJ125X475-100 is a double-acting, single-rod ISO 15552 profile cylinder featuring a substantial 100 mm rear stroke adjuster. This mechanism allows you to dial back the nominal 475 mm travel, creating a usable end-position window between 375 and 475 mm to accommodate varying product sizes without swapping out the actuator. It delivers a robust 6136 N push force at 0.5 MPa and utilizes a carbon steel piston rod with an M27x2 thread for high structural integrity.
Because the stroke extends to 475 mm, an external guide is recommended to prevent excessive side-loading on the rod bearings. The barrel is extruded aluminum with sensor grooves on both sides for CMSE reed and DMSE electronic switches. The rear adjuster functions strictly as a mechanical stop to set the travel end and deceleration point; it does not hold the load without live air pressure. For true load-holding, consider an AirTAC SAIL or BSAI series cylinder.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X475-100 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X475-100 |
|---|---|
| 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 SAIJ125X475-100
| 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 SAIJ125X475-100 Is Used
Variable End Stops
Dial in the exact clamping depth between 375 and 475 mm during machine setup, allowing rapid accommodation of different workpiece heights on a single fixture.
Product-Size Changeovers
Adjust the rear stopper screw to shift the end-of-stroke position instantly when a production line switches to a new package or part dimension.
Commissioning Fine-Tune
Trim the effective travel window during installation to perfect machine timing and avoid mechanical interference without replacing the actuator.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X475-100 the Right Cylinder?
Select this 125 mm bore actuator when your equipment requires heavy thrust (6136 N push at 0.5 MPa) and on-the-fly end-position tuning. If your application needs less force, stepping down to an 80 mm bore provides 2513 N push, whereas moving up to a 160 mm bore yields 10053 N. The 100 mm adjustment range is ideal for commissioning fine-tuning and product changeovers, removing the need to bolt on external stops or machine a completely new fixed-stroke SAI cylinder.
This ISO 15552 dimensionally interchangeable profile cylinder uses a PT tapered port and supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2. It omits the FB, CA, CB, and CR foot and clevis options. Operating speed is 30-500 mm/s, and the rod material is standard carbon steel.
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 SAIJ125X475-100 FAQ
At a 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. The maximum thrust rating is 1251 kgf at 1.0 MPa.
The rear adjuster screw acts as a mechanical stop that shortens the nominal 475 mm stroke by up to 100 mm, providing an adjustable travel window from 375 to 475 mm. It sets the end position but does not lock the load without continuous 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 SAIJ125X475-100
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.