Airtac SAIJ125 Adjustable Cylinder SAIJ125AX185-100S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX185-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 185mm 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
- Stroke185 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX185-100S
The AirTAC SAIJ125X185-100-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It delivers a robust 6136N push force at 0.5 MPa and provides a usable travel window of 85-185mm, allowing you to dial back the nominal 185mm stroke by up to 100mm. This wide adjustment range is ideal for fine-tuning end positions during machine commissioning or product changeovers without swapping the cylinder.
Equipped with a SUS420J2 stainless steel rod and PT tapered port threads, this unit is built for demanding environments. It includes a magnet for position sensing via CMSE reed or DMSE electronic switches. The rear adjuster acts only as a travel stop to set deceleration endpoints and does not hold the load without live air; for true load-holding, consider a SAIL or BSAI series cylinder.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX185-100S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX185-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 185 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 SAIJ125AX185-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×185 | 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 SAIJ125AX185-100S Is Used
Product Changeover Lines
Leverage the 85-185mm travel window to rapidly reconfigure end positions for different product sizes without physically replacing the cylinder or adding external stops.
Machine Commissioning
Fine-tune the retract end-position during setup to dial in exact clamping or ejection distances, using the 100mm adjustment range to perfect the motion sequence.
Heavy Material Handling
Utilize the 6136N push force to move heavy pallets or workpieces, relying on the robust 32mm rod to withstand dynamic impacts at the travel ends.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX185-100S the Right Cylinder?
Choose this 125mm bore cylinder when your application requires high thrust (6136N at 0.5 MPa) alongside extensive variable end-stop flexibility. If you need less force, stepping down to an 80mm bore yields 2513N, while moving up to a 160mm bore provides 10053N. The adjustable stroke is highly beneficial for setups requiring frequent product-size changes, offering a commissioning fine-tune capability that a fixed-stroke SAI cylinder cannot match.
As a dimensionally interchangeable ISO 15552 profile cylinder, it matches standard mounting footprints using PT ports and a -S magnet. It supports SAIJ mounting options (Basic, FA, LB, TC, FTC, TCM1, TCM2) but omits FB, CA, CB, and CR brackets. Because the 185mm stroke is relatively long for this bore size, an external guide is recommended to prevent excessive rod side-loading and premature wear.
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 SAIJ125AX185-100S FAQ
The rear adjuster screw allows you to shorten the effective stroke by up to 100mm, creating a usable travel window of 85-185mm. This lets you fine-tune the retract end-position at commissioning or on product changeover without changing the cylinder itself.
At a 0.5 MPa operating pressure, it provides 6136N of push force and 5734N of pull force. At the maximum 1.0 MPa pressure, the push force reaches 1251 kgf.
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 SAIJ125AX185-100S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.