Airtac SAIJ50 Adjustable Cylinder SAIJ50BX270-20S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX270-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 270mm 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
- Stroke270 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 SAIJ50BX270-20S
The AirTAC SAIJ50X270-20-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers 982N of push force at 0.5 MPa and provides a usable travel window of 250 to 270mm, letting you dial in the exact retract position without swapping hardware.
This variant includes a SUS304 stainless steel rod for superior corrosion resistance and an integrated magnet for CMSE or DMSE sensors. The extruded aluminum barrel retains standard ISO 15552 mounting dimensions, and the PT tapered ports ensure a tight pneumatic seal.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX270-20S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX270-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 270 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 SAIJ50BX270-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×270 | 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 SAIJ50BX270-20S Is Used
Changeover Calibration
Quickly fine-tune the 250-270mm travel window during product size changeovers on a packaging line without disassembling the cylinder.
End-Stop Trimming
Use the rear screw to precisely set the retract end position for machining operations that require strict positional tolerances.
Assembly Line Indexing
Leverage the 982N push force and integrated magnet to drive and confirm part movement in automated assembly stations.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX270-20S the Right Cylinder?
Choose this 50mm bore when an application requires moderate thrust, such as 1374N at 0.7 MPa, and step down to a 40mm bore (628N at 0.5 MPa) if the load is lighter. The 20mm rear adjustment screw is ideal for product changeovers, acting as a hard stop to fine-tune the end position rather than relying on a fixed-stroke SAI cylinder. Because the stroke is 270mm, an external guide is recommended to prevent excessive side-loading on the rod.
The rear adjuster functions strictly as a travel stop and does not hold the load without live air pressure; for positive locking, consider the SAIL or BSAI series. This SAIJ model supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, omitting FB and CA options.
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 SAIJ50BX270-20S FAQ
At 0.5 MPa, this 50mm bore cylinder provides 982N of push force and 825N of pull force. At 0.7 MPa, the push force increases to 1374N.
The rear adjuster acts as a mechanical stop that shortens the nominal 270mm stroke by up to 20mm, creating a 250-270mm usable travel window. It requires live air to hold position and does not lock the load.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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