Airtac SAIJ50 Adjustable Cylinder SAIJ50AX375-40
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX375-40 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 SAIJ50AX375-40
The AirTAC SAIJ50X375-40 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 335 to 375 mm, allowing you to dial back the nominal stroke by up to 40 mm during commissioning without swapping the barrel or adding external stops. With a 50 mm bore, it delivers 982 N of push thrust at 0.5 MPa and 1374 N at 0.7 MPa.
This unit uses a SUS420J2 stainless steel rod for enhanced corrosion resistance and accepts PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement. Because this is a long 375 mm stroke, the M16x1.5 rod should be guided externally to prevent excessive side-loading and premature seal wear.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX375-40 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX375-40 |
|---|---|
| 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 SAIJ50AX375-40
| 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 SAIJ50AX375-40 Is Used
Product Changeover
Quickly fine-tune the retract end position up to 40 mm when switching between product sizes on the same production line.
Machine Setup
Dial in the exact 335-375 mm travel window during commissioning without machining external stopper blocks.
Variable End Stops
Adjust the rear stopper screw to accommodate varying material lengths in automated feeding and clamping stations.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX375-40 the Right Cylinder?
Choose this 50 mm bore adjustable-stroke cylinder when your machine setup requires precise end-position tuning across product changeovers. If you need less force, stepping down to a 40 mm bore yields 628 N at 0.5 MPa; stepping up to a 63 mm bore provides 1559 N. The rear adjuster acts purely as a mechanical stop to set deceleration and travel limits—it is not a lock. If your application requires the load to be held without live air pressure, use a SAIL or BSAI locking cylinder instead. For a direct ISO 15552 interchangeable replacement, match the 50 mm bore, 375 mm stroke, 40 mm adjustment, PT port, and standard mounting (Basic, FA, LB, TC, FTC, TCM1, TCM2).
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 SAIJ50AX375-40 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 0.7 MPa, the push force increases to 1374 N.
The rear adjuster screw lets you shorten the effective travel from the 375 mm nominal stroke down to 335 mm. This mechanical stop only sets the travel end position; it does not lock the load without continuous air pressure.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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