Airtac SAIJ125 Adjustable Cylinder SAIJ125AX220-30
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX220-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 220mm 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
- Stroke220 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX220-30
The AirTAC SAIJ125X220-30 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster that allows you to fine-tune the effective travel within a 190-220 mm window. It delivers 6136 N of pull force at 0.5 MPa and uses a robust 32 mm piston rod with an M27x2 thread. This specific configuration includes a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance and PT tapered port threads.
Because the adjuster acts purely as a mechanical stop at the retract end, it does not lock the load without live air pressure. The extruded aluminum barrel includes sensor grooves on both sides, though this unit is built without a magnet for position sensing. It supports a speed range of 30-500 mm/s and uses adjustable air cushions at both ends to decelerate the heavy 125 mm bore payload smoothly.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX220-30 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX220-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 220 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 SAIJ125AX220-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×220 | 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 SAIJ125AX220-30 Is Used
Machine Setup & Changeover
Dial in the exact 190-220 mm retract position during product size transitions on a packaging line without swapping out the entire cylinder.
Heavy Material Forming
Leverage the 6136 N pull force at 0.5 MPa to actuate heavy forming presses, using the 30 mm adjuster to fine-tune the bottoming position.
Variable End-Stop Positioning
Set precise mechanical stops for heavy-duty lifting fixtures where the final resting position of the load must be adjusted on the fly.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX220-30 the Right Cylinder?
Select this 125 mm bore cylinder when your application requires high thrust—up to 8590 N push at 0.7 MPa—combined with variable end-position tuning. If your force requirements are lower, stepping down to a 100 mm bore yields 3681 N of pull at 0.5 MPa, whereas moving up to a 160 mm bore provides 9425 N of pull. Choose this adjustable-stroke SAIJ model over a fixed-stroke SAI when you need to trim the retract position by up to 30 mm during machine commissioning or product changeovers, without adding external stops.
For load-holding applications without continuous air pressure, note that the rear adjuster and air cushions only set the travel end; they do not function as a brake. You would need to specify a SAIL (air-released lock) or BSAI (clamp-lock) cylinder, or utilize an external pilot-operated check valve. This SAIJ125X220-30 is dimensionally interchangeable per ISO 15552 and uses a reduced mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR).
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 SAIJ125AX220-30 FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force increases to 8590 N.
The rear adjuster screw allows you to shorten the nominal 220 mm stroke by up to 30 mm, giving an effective travel window of 190-220 mm. It acts as a mechanical stop and does not lock the load without live 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 SAIJ125AX220-30
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.