Airtac SAIJ50 Adjustable Cylinder SAIJ50BX375-75S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX375-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 375mm 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
- Stroke375 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 SAIJ50BX375-75S
The AirTAC SAIJ50X375-75-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear mechanical stroke adjuster. It provides a usable travel window of 300 to 375 mm, allowing you to dial back the 375 mm nominal stroke by up to 75 mm during commissioning. Delivering 982 N of push force at 0.5 MPa, it fits neatly into the mid-range force class for pneumatic actuation.
This specific configuration features a SUS304 stainless steel piston rod (code B) for superior corrosion resistance and includes a standard magnet (-S) for position sensing with AirTAC CMSE reed or DMSE electronic switches. The extruded aluminum barrel includes sensor grooves on both sides, and the body uses PT tapered port threads. The rear adjuster functions strictly as a travel stop to fine-tune the end position without adding external stops.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX375-75S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX375-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 375 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 SAIJ50BX375-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×375 | 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 SAIJ50BX375-75S Is Used
Machine Changeover
Quickly fine-tune the retract end-position by up to 75 mm when switching product sizes on a packaging line, avoiding the need to physically swap cylinders.
Variable End-Stop Setup
Dial in the exact 300 to 375 mm travel window during commissioning to perfectly time the stroke without bolting on external mechanical stops.
Corrosion-Resistant Actuation
Leverage the SUS304 stainless steel rod for light-duty testing or assembly stations where moisture or minor chemical exposure is a concern.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX375-75S the Right Cylinder?
Select this 50 mm bore cylinder when your application requires 982 N of push force at 0.5 MPa, which sits comfortably below the 63 mm bore offering 1559 N but well above the 40 mm bore at 628 N. The adjustable stroke is ideal for machine setups requiring variable end-stops or product-size changeovers, letting you fine-tune the retract position without swapping out the entire actuator. For operations needing true load-holding without live air pressure, this adjuster will not act as a lock; you should instead explore the SAIL or BSAI series.
Because the nominal stroke is 375 mm, the M16x1.5 rod thread and 20 mm rod diameter should be guided externally to prevent excessive side-loading on the seals. As a dimensionally interchangeable ISO 15552 profile cylinder, it uses a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). To match this exact SKU, specify the 50 mm bore, 375 mm stroke, 75 mm adjustment, PT ports, SUS304 rod, and the -S magnet.
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 SAIJ50BX375-75S FAQ
At a standard 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. It can reach up to 1767 N of push force at 0.9 MPa.
The rear adjuster acts as a mechanical stop that lets you shorten the effective travel from the 375 mm nominal stroke down to as little as 300 mm. It is a travel stop for end-position tuning, not a lock, and does not hold the load without live air pressure.
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