Airtac SAIJ125 Adjustable Cylinder SAIJ125AX90-75
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX90-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 90mm 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
- Stroke90 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX90-75
The AirTAC SAIJ125X90-75 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a substantial 6136N push force at 0.5 MPa, stepping up to 8590N at 0.7 MPa. Equipped with a SUS420J2 stainless steel rod (material code A), it handles harsher environments while utilizing a PT tapered port thread for a tight pneumatic seal.
This specific SKU provides a usable travel window of 15 to 90 mm, allowing you to dial back the nominal stroke by up to 75 mm. The rear stopper screw enables fine end-position tuning at commissioning without swapping the cylinder or adding external stops. It features variable air cushions at both ends and extruded aluminum barrel sensor grooves on two sides.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX90-75 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX90-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 90 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 SAIJ125AX90-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×90 | 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 SAIJ125AX90-75 Is Used
Product Size Changeovers
Rapidly reconfigure the end-stop position by up to 75mm when switching a packaging line to a different carton or pallet size.
Press Fit Commissioning
Fine-tune the 15-90mm travel window during setup to dial in the exact contact force without machining new spacer blocks.
Heavy Component Ejection
Leverage the 6136N thrust at 0.5 MPa to push heavy molded parts out of a fixture, adjusting the ejection distance per part run.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX90-75 the Right Cylinder?
Choose this 125mm bore when a 100mm bore (offering 3927N push at 0.5 MPa) cannot provide enough force, but you want to avoid the heavier 160mm class. The massive 75mm adjustment range is ideal for machines running multiple product sizes, acting as a variable end-stop during changeovers. Because the nominal stroke is 90mm, no external side-load guide is strictly required, but the 32mm rod diameter handles incidental loads well.
Remember that the rear adjuster is a travel stop, not a locking device; the cylinder will not hold a load without live air pressure. For true fail-safe load holding, select an AirTAC SAIL or BSAI series cylinder instead. To replace an ISO 15552 cylinder, match the 125mm bore, 90mm stroke, PT port, and desired mounting from the SAIJ set: Basic, FA, LB, TC, FTC, TCM1, or TCM2.
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 SAIJ125AX90-75 FAQ
A rear screw stopper lets you mechanically shorten the effective travel from 90mm down to as little as 15mm, creating a 15-90mm adjustable window without changing the cylinder's physical mounting.
It provides 6136N of push force and 5734N of pull force at 0.5 MPa. If you increase the operating pressure to 0.7 MPa, the push force rises to 8590N.
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 SAIJ125AX90-75
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.