Airtac SAIJ50 Adjustable Cylinder SAIJ50AX115-75
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX115-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 115mm 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
- Stroke115 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 SAIJ50AX115-75
The AirTAC SAIJ50X115-75 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers 982N of push force and 825N of pull force at 0.5 MPa, utilizing a 20mm piston rod and G1/4 port. The integrated adjustment screw allows you to trim the nominal 115mm stroke back by up to 75mm, providing a wide usable travel window between 40mm and 115mm without swapping hardware.
This unit is configured with an SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance, alongside PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement. Note that the rear adjuster functions strictly as a mechanical stop to fine-tune the end position and does not lock the load without sustained air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX115-75 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX115-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 115 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 SAIJ50AX115-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×115 | 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 SAIJ50AX115-75 Is Used
Product Changeover
Dial in the stroke from 40 to 115mm on the fly to accommodate different package sizes on a packaging line without changing the cylinder.
Prototype Positioning
Fine-tune the end-stop during machine commissioning to find the exact clamping position before locking down the setup.
Variable End Stops
Provide a mechanical stop for varying material lengths in an assembly station, relying on the rear screw rather than external fixtures.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX115-75 the Right Cylinder?
Choose this 50mm bore when an application requires moderate thrust, such as 982N push at 0.5 MPa, stepping up from a 40mm bore that provides 628N. The generous 75mm adjustment range is ideal for prototyping or production lines running mixed product sizes, allowing operators to dial in the exact end-stop during changeovers rather than machining external spacers. For fixed travel needs without the adjustment mechanism, the standard SAI cylinder is a simpler alternative.
Because the nominal stroke is 115mm, side-load risks are minimal, but the load should still be guided to prevent binding. To replace an ISO 15552 cylinder, match the 50mm bore, 115mm stroke, -75 adjustment, PT port, and your required mounting bracket from the SAIJ set (Basic, FA, LB, TC, FTC, TCM1, TCM2). If pneumatic pressure is lost, this cylinder will not hold its position; use a SAIL or BSAI locking cylinder for fail-safe load holding.
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 SAIJ50AX115-75 FAQ
At 0.5 MPa operating pressure, this 50mm bore cylinder generates 982N of push force and 825N of pull force. At 0.7 MPa, the push force increases to 1374N.
The rear adjuster acts as a mechanical stop that lets you shorten the 115mm nominal stroke by up to 75mm. This creates a usable travel window of 40 to 115mm, settable during commissioning without removing the cylinder.
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