Airtac SAIJ125 Adjustable Cylinder SAIJ125X55-10S
The AirTAC SAIJ125 Adjustable Cylinder SAIJ125X55-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 55mm 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
- Stroke55 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 SAIJ125X55-10S
The AirTAC SAIJ125X55-10-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that trims the effective travel. With a 55 mm nominal stroke and a 10 mm adjustment range, it provides a precise 45-55 mm usable travel window for fine-tuning end positions at commissioning.
This variant includes a magnet for position sensing with CMSE reed or DMSE electronic switches. It uses PT tapered ports and a carbon steel rod. The adjuster acts strictly as a mechanical stop to set the retract position and does not hold the load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X55-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X55-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 55 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 SAIJ125X55-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×55 | 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 SAIJ125X55-10S Is Used
Heavy Pressing
Dial in the exact 45-55 mm travel needed for heavy pressing and clamping tasks during initial machine commissioning.
Product Changeover
Quickly adjust the retract stop to accommodate different product sizes on a production line without changing the cylinder.
End-Stop Tuning
Fine-tune the end-of-stroke position to perfect mechanical alignment in automated assembly machinery.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X55-10S the Right Cylinder?
Choose this 125 mm bore when your application requires substantial force, stepping up from a 100 mm bore that yields 3927 N at 0.5 MPa. The adjustable stroke is ideal for machine setups requiring variable end-stops or product changeovers, avoiding the need to swap a fixed-stroke SAI cylinder. For load-holding without continuous air pressure, consider an SAIL or BSAI cylinder instead, as this adjuster is not a locking mechanism.
When replacing an ISO 15552 cylinder, match the 125 mm bore, 55 mm stroke, 10 mm adjustment, PT port, and the -S magnet option. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options.
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 SAIJ125X55-10S FAQ
The rear adjuster screw allows you to shorten the 55 mm nominal stroke by up to 10 mm, creating a usable travel window of 45-55 mm. This enables precise end-position tuning without adding external stops.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
Related AirTAC SAI Cylinders
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