Airtac SAIJ50 Adjustable Cylinder SAIJ50AX150-75
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX150-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 150mm 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
- Stroke150 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 SAIJ50AX150-75
The AirTAC SAIJ50X150-75 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 150 mm nominal travel to a precise usable window of 75-150 mm. This wide adjustment range is ideal for product changeovers, letting you fine-tune the retract end position at commissioning without swapping out the barrel or adding external stops. It delivers 982 N of push force and 825 N of pull force at 0.5 MPa, placing it in a versatile mid-range thrust class.
Built with an SUS420J2 stainless steel piston rod (material code A), this cylinder offers improved corrosion resistance for harsher environments. The extruded aluminum barrel features sensor grooves on both sides for direct mounting of position switches. Note that the rear adjuster acts purely as a mechanical travel stop to set deceleration and end positions; it does not hold the load without live air pressure. For load-holding applications, consider the SAIL or BSAI series instead.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX150-75 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX150-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 150 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 SAIJ50AX150-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×150 | 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 SAIJ50AX150-75 Is Used
Variable End-Stop Positioning
Dial in the exact retract distance between 75 mm and 150 mm during commissioning to accommodate different material lengths without changing the cylinder.
Product Size Changeover
Quickly reconfigure the stroke window on packaging or assembly lines when switching to a new product size, minimizing downtime and avoiding external stop hardware.
Machine Setup Optimization
Fine-tune the final end-position during initial machine build to perfect the timing and mechanical reach of your tooling before locking down the sequence.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX150-75 the Right Cylinder?
Choose this 50 mm bore when your application requires a nominal 150 mm stroke that frequently needs to be shortened by up to 75 mm during machine setup or product size changes. If you need less force, stepping down to a 40 mm bore yields 628 N of push force at 0.5 MPa, while stepping up to a 63 mm bore provides 1559 N. Because the stroke is 150 mm, the 16 mm rod diameter and M12x1.25 thread provide sufficient rigidity, but always guide the load externally to prevent side-loading damage.
When replacing an ISO 15552 cylinder, match these exact specifications: 50 mm bore, 150 mm stroke, 75 mm adjustment range, PT tapered port threads (G1/4), and no magnet (-S omitted). The SAIJ mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR brackets found in some standard catalogs. The rear screw stopper only sets the travel end and works alongside the variable air cushions at both ends; it is not a locking mechanism.
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 SAIJ50AX150-75 FAQ
At an operating pressure of 0.5 MPa, this 50 mm bore cylinder generates 982 N of push force and 825 N of pull force. At the maximum pressure of 1.0 MPa, it can deliver up to 200 kgf.
The rear adjuster screw lets you mechanically shorten the 150 mm nominal stroke, providing a usable travel window of 75 to 150 mm. This allows you to set the exact retract end position during commissioning without replacing the cylinder.
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