Airtac SAIJ125 Adjustable Cylinder SAIJ125X165-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X165-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 165mm 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
- Stroke165 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X165-10S
The AirTAC SAIJ125X165-10-S is a double-acting ISO 15552 profile cylinder with a rear stroke adjuster, letting you dial back the travel by up to 10 mm. This yields a 155-165 mm usable window, ideal for fine-tuning end positions at commissioning without swapping the unit. It delivers 6136 N of pull force at 0.5 MPa and uses a PT tapered port.
The extruded aluminum barrel includes sensor grooves on both sides for CMSE reed and DMSE electronic switches. The carbon steel rod and M27x2 thread handle high side loads, while the SAIJ mounting set omits FB, CA, CB, and CR brackets, offering Basic, FA, LB, TC, FTC, TCM1, and TCM2 options.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X165-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X165-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 165 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 SAIJ125X165-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×165 | 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 SAIJ125X165-10S Is Used
Machine Setup Tuning
Dial in the exact 155-165 mm end position during commissioning to perfect a press or clamping operation without machining new spacers.
Product Size Changeover
Quickly adjust the retract stop on a packaging line when switching to a different carton length, saving setup time.
Variable End-Stop Actuation
Use the 10 mm trim range to alter the stroke for testing different sensor trigger points or ejector positions on the fly.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X165-10S the Right Cylinder?
Choose this 125 mm bore when 80 mm falls short (2268 N pull at 0.5 MPa) but 160 mm is excessive. The 10 mm adjustment window is perfect for variable end-stops or product-size changeovers on a line, avoiding the need for fixed external stops. The rear adjuster acts only as a travel stop and does not hold the load without live air; for pilot-operated locking, consider SAIL or BSAI types.
For a true ISO 15552 replacement match, verify the 165 mm stroke, 10 mm adjustment range, PT G1/2 port, and the -S magnet. Since the stroke is under 300 mm, external guiding is less critical than on longer strokes, but the heavy forces still demand a rigid mount.
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 SAIJ125X165-10S FAQ
At 0.5 MPa it provides 6136 N of pull force and 8590 N of push force. At 0.7 MPa, the push force increases to 8590 N.
A rear stopper screw lets you shorten the nominal 165 mm stroke by up to 10 mm, creating a 155-165 mm travel window for fine end-position tuning.
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