Airtac SAIJ50 Adjustable Cylinder SAIJ50AX55-10
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX55-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 55mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ50 mm
- Stroke55 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 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 SAIJ50 Adjustable Cylinder SAIJ50AX55-10
The AirTAC SAIJ50X55-10 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the end position. With a 55 mm nominal stroke and a 10 mm adjustment range, it provides a usable travel window of 45 to 55 mm. This enables precise end-position tuning at commissioning without swapping the cylinder or adding external stops. It delivers 982 N of push force and 825 N of pull force at 0.5 MPa.
This variant features a SUS420J2 stainless steel rod for enhanced durability against moisture and a PT tapered port thread. The extruded aluminum barrel includes sensor grooves on both sides. Note that the rear adjuster acts purely as a travel stop to set deceleration, not a lock, so it will not hold the load without live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX55-10 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX55-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 55 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max stroke | Up to 1200 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ50 Adjustable Cylinder SAIJ50AX55-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | 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 SAIJ50 Adjustable Cylinder SAIJ50AX55-10 Is Used
Machine Setup Calibration
Dial in the exact 45 to 55 mm end position during initial commissioning to perfect a pressing operation without machining custom spacers.
Product Changeover
Quickly adjust the stroke stop on the line when switching to a slightly different product size, minimizing downtime.
Variable End-Stop Positioning
Use the rear screw to set the precise retract distance for a light-duty assembly fixture requiring 982 N of push force.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX55-10 the Right Cylinder?
Choose this 50 mm bore if you need 982 N push force at 0.5 MPa, sitting between the 40 mm bore (628 N) and the 63 mm bore (1559 N). The adjustable stroke is ideal for machine setups requiring a variable end-stop during product changeovers. For load-holding without live pressure, consider the SAIL or BSAI series, as this plain SAIJ adjuster is only a stop. To match this ISO 15552 replacement exactly, verify the 50 mm bore, 55 mm stroke, 10 mm adjustment, PT ports, SUS420J2 rod, and no magnet.
With a 16 mm rod and M12x1.25 thread, the rod end handles moderate side loads well. Since the stroke is only 55 mm, external guiding is usually unnecessary, but always ensure the load is axially aligned to prevent premature seal wear.
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 SAIJ50 Adjustable Cylinder SAIJ50AX55-10 FAQ
At 0.5 MPa, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. The 55 mm nominal stroke combined with the 10 mm adjustment code creates a usable travel window of 45 to 55 mm.
No, the rear adjuster is a travel stop that sets the end position and deceleration, not a lock. The cylinder will not hold its load without live air pressure. For load-holding, use a SAIL or BSAI series cylinder.
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