Airtac SAIJ50 Adjustable Cylinder SAIJ50AX275-40
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX275-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 275mm 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
- Stroke275 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 SAIJ50AX275-40
The AirTAC SAIJ50X275-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that trims the effective travel by up to 40 mm. This yields a usable stroke window of 235 to 275 mm, allowing you to dial in the exact end position during commissioning without adding external stops. It delivers a push force of 982 N at 0.5 MPa, making it well-suited for medium-duty handling tasks.
This variant uses a SUS420J2 stainless steel rod (option A) for improved corrosion resistance compared to standard carbon steel. The extruded aluminum barrel incorporates sensor grooves on both sides, and the fluid porting utilizes PT tapered threads (G1/4). The rear adjuster acts purely as a mechanical stop to set the retract position; it does not hold the load without live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX275-40 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX275-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 275 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 SAIJ50AX275-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×275 | 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 SAIJ50AX275-40 Is Used
End-Position Tuning
Dial in the exact retract distance within the 235-275 mm window during machine setup to perfect product placement without swapping hardware.
Product Changeover
Quickly adjust the stroke stop on the line when running different package sizes, leveraging the 40 mm trim range to adapt on the fly.
Medium-Duty Handling
Utilize the 982 N push force at 0.5 MPa to push or lift workpieces reliably in automated assembly cells.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX275-40 the Right Cylinder?
Choose this 50 mm bore when your application requires roughly 982 N of push force at 0.5 MPa. If your setup demands less force, stepping down to a 40 mm bore yields 628 N, while moving up to a 63 mm bore provides 1559 N. The adjustable stroke is ideal for product changeovers where the end-stop varies slightly, eliminating the need to physically swap out a fixed-stroke SAI cylinder.
Because this unit features a 275 mm stroke, an external guide rail is recommended to prevent excessive side-loading on the piston rod. To replace an ISO 15552 cylinder, match the 50 mm bore, 275 mm stroke, 40 mm adjustment, G1/4 PT port, and your required mounting bracket from the SAIJ set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Note that this plain SAIJ does not hold position without air; for load-holding without live pressure, consider the SAIL or BSAI series.
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 SAIJ50AX275-40 FAQ
It features a rear adjusting screw that mechanically shortens the stroke by up to 40 mm. This creates a usable travel window of 235 to 275 mm, allowing you to fine-tune the retract end position at commissioning. The adjuster is a stop, not a lock, and requires live air to hold the load.
At 0.5 MPa operating pressure, the SAIJ50X275-40 provides a push force of 982 N and a pull force of 825 N. It operates at speeds between 30 and 800 mm/s.
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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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