Airtac SAIJ50 Adjustable Cylinder SAIJ50AX105-40S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX105-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 105mm 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
- Stroke105 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 SAIJ50AX105-40S
The AirTAC SAIJ50X105-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 65 to 105 mm usable travel window. Delivering 982 N of push force at 0.5 MPa, it provides robust performance for mid-range automation tasks. The extruded aluminum barrel includes sensor grooves on both sides, and this variant includes a magnet for position detection.
This model uses a SUS420J2 stainless steel rod (code A) to resist corrosion and handle higher side loads than a standard carbon steel rod. It features PT tapered port threads and is equipped with adjustable air cushions at both ends to absorb kinetic energy. The rear adjuster acts purely as a mechanical stop to dial in the end position during commissioning, not as a load-holding lock.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX105-40S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX105-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 105 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 SAIJ50AX105-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×105 | 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 SAIJ50AX105-40S Is Used
Machine Setup Changeover
Dial in the exact end position within the 65-105 mm window during product line changeovers without physically replacing the cylinder or adding external stopper blocks.
Variable End-Stop Positioning
Fine-tune the retract stroke by up to 40 mm at commissioning to accommodate sensor alignment or mechanical variance, ensuring precise end-of-travel positioning.
Corrosive Assembly Lines
Leverage the SUS420J2 stainless steel rod and 982 N of thrust to drive light assembly presses in environments where standard carbon rods might face degradation.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX105-40S the Right Cylinder?
Choose this 50 mm bore when your application requires around 982 N of push force at 0.5 MPa, stepping up from a 40 mm bore that provides 628 N, or down from a 63 mm bore delivering 1559 N. An adjustable stroke is selected over a fixed SAI cylinder when you need variable end-stops for product changeovers or fine-tuning without swapping physical hardware. For load-holding without live air pressure, a plain SAIJ cannot hold position; you would need an external rod lock or a SAIL/BSAI series cylinder instead.
For ISO 15552 replacement, match the 50 mm bore, 105 mm nominal stroke, 40 mm adjustment range, PT port threads, and the -S magnet option. The supported SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the nominal stroke is 105 mm, an external guide is recommended for optimal side-load management.
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 SAIJ50AX105-40S FAQ
At a 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 200 kgf of push force.
The rear mechanical stopper allows you to trim the effective stroke back by up to 40 mm from the 105 mm nominal length, creating a 65 to 105 mm usable travel window. The adjuster is a travel stop only and does not hold the load without continuous air pressure.
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