Airtac SAIJ125 Adjustable Cylinder SAIJ125X220-100S
The AirTAC SAIJ125 Adjustable Cylinder SAIJ125X220-100S 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ125 mm
- Stroke220 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X220-100S
The AirTAC SAIJ125X220-100-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that trims the retract travel by up to 100 mm. This creates a wide 120-220 mm usable window, allowing you to dial in the exact end position during commissioning without swapping the barrel or adding external stops.
Equipped with a -S magnet, this unit integrates seamlessly with AirTAC CMSE reed and DMSE solid-state sensors housed in the dual-side extruded barrel grooves. The PT-threaded G1/2 port pairs with a robust 32 mm carbon steel rod and M27x2 thread to handle high side-loading. It uses the standard SAIJ mounting subset (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR brackets.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X220-100S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X220-100S |
|---|---|
| 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 | 5734 N | 5734 N |
| 0.7 MPa | 8027 N | — |
| Max (@1.0 MPa) | 1169 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ125 Adjustable Cylinder SAIJ125X220-100S
| 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 SAIJ125X220-100S Is Used
Machine Setup & Changeover
Fine-tune the 120-220 mm retract window during line changeovers to accommodate new product dimensions without disassembling the actuator assembly.
Variable End-Stop Positioning
Dial in the exact end position at commissioning using the rear screw, eliminating the need to fabricate and bolt on external mechanical stops.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X220-100S the Right Cylinder?
The 100 mm adjustment range is ideal for product changeovers on a packaging line, giving you a 120-220 mm travel window to accommodate varying package sizes without mechanical rebuilds.
For any stroke at or above 300 mm, long unsupported rods require an external guide to prevent binding. Remember that the rear adjuster is a travel stop, not a lock; it cannot hold a load without live air. For true pneumatic load-holding, select the SAIL (air-released lock) or BSAI (clamp-lock) series instead. To replace an ISO 15552 cylinder, match the 125 mm bore, 220 mm stroke, 100 mm adjustment, PT G1/2 port, and -S magnet.
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 SAIJ125X220-100S FAQ
If you increase the operating pressure to 0.7 MPa, the push force rises to 8590 N.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 220 mm nominal stroke by up to 100 mm, creating a 120-220 mm usable travel window. It only sets the travel end and decelerates the load; it does not lock or hold the load without live air pressure.
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