Airtac SAIJ125 Adjustable Cylinder SAIJ125X900-30
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X900-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 900mm 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
- Stroke900 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X900-30
The AirTAC SAIJ125X900-30 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling you to dial back the 900 mm nominal travel to a precise 870-900 mm window. Built with an extruded aluminum barrel, it delivers robust thrust up to 6136 N pull at 0.5 MPa, scaling to 11045 N at 0.9 MPa. The PT tapered porting and carbon steel rod are engineered for heavy-duty cycling.
Because the adjuster acts purely as a mechanical stop at the retract end, it allows fine end-position tuning at commissioning without adding external stops. The mounting hardware utilizes a reduced SAIJ subset (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR brackets. Note that this rear stopper does not hold the load without live air pressure; for true load-holding, consider the SAIL or BSAI series.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X900-30 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X900-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 900 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 SAIJ125X900-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×900 | 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 SAIJ125X900-30 Is Used
Press Tuning
Fine-tune the retract position during press setup to accommodate varying material thicknesses without swapping cylinders.
Product Changeover
Adjust the end-stop on the fly when switching a production line to a different package or pallet size.
Long-Stroke Forming
Use the 870-900 mm travel window to precisely set the forming depth for large automotive or appliance panels.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X900-30 the Right Cylinder?
Choose this 125 mm bore when the 80 mm class (2268 N pull at 0.5 MPa) is insufficient but you want to avoid stepping up to the massive 160 mm bore. The 30 mm adjustment range is perfect for variable end-stops during machine setup and product changeover, providing flexibility a fixed-stroke SAI cannot match.
When specifying a replacement, match the 900 mm stroke, 30 mm adjustment, PT G1/2 ports, and the specific mounting bracket. Because the stroke extends to 900 mm, the 32 mm carbon steel rod and M27x2 thread will carry significant side loads; an external guide is strongly recommended to prevent rod binding.
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 SAIJ125X900-30 FAQ
At 0.5 MPa it provides 6136 N pull and 5734 N push. At 0.9 MPa, the push force reaches 11045 N.
A rear external stopper lets you shorten the 900 mm stroke by up to 30 mm, creating an 870-900 mm adjustable travel window for precise end-position tuning.
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 SAIJ125X900-30
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.