Airtac SAIJ50 Adjustable Cylinder SAIJ50X115-50
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50X115-50 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 SAIJ50X115-50
The AirTAC SAIJ50X115-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 65 to 115 mm, allowing you to dial back the nominal stroke by up to 50 mm during commissioning. This bore generates 982 N of push force and 825 N of pull force at 0.5 MPa.
The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of switches. Because this configuration lacks a magnet, position sensing requires an external solution. The rear stopper sets the retract end position but does not function as a load lock; for holding loads without live air, consider the SAIL or BSAI series.
Airtac SAIJ50 Adjustable Cylinder SAIJ50X115-50 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50X115-50 |
|---|---|
| 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 SAIJ50X115-50
| 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 SAIJ50X115-50 Is Used
Machine Setup Calibration
Fine-tune the 65-115 mm travel window during initial commissioning to perfectly dial in the retract end position without adding external stopper blocks.
Product Changeover
Quickly adapt the cylinder's effective stroke on packaging lines when switching between product sizes, saving downtime on physical hardware swaps.
Variable End-Stop Tooling
Use the 50 mm adjustment range to alter the retract depth for machining or clamping operations that require precise, repeatable end-position tweaking.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50X115-50 the Right Cylinder?
Choose this 50 mm bore when a 32 mm bore (402 N push at 0.5 MPa) is too weak, but a 63 mm bore (1559 N push at 0.5 MPa) is oversized. The 50 mm bore uses a G1/4 PT port and a 16 mm carbon steel rod with an M12x1.25 thread. An adjustable stroke is ideal for machine setups requiring variable end stops without swapping hardware, unlike a fixed-stroke SAI cylinder.
For ISO 15552 interchangeability, match the 115 mm stroke, 50 mm adjustment range, G1/4 port, and standard carbon steel rod. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2. Since the stroke is under 300 mm, side-load concerns are minimal, though the 16 mm rod handles moderate lateral stress well.
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 SAIJ50X115-50 FAQ
At 0.5 MPa, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. At the maximum operating pressure of 1.0 MPa, it delivers up to 200 kgf of push force.
The rear adjuster acts as a mechanical stop that trims the effective travel back by up to 50 mm. This creates a usable stroke window of 65 to 115 mm, allowing precise end-position tuning without replacing the cylinder.
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