Airtac SAIJ50 Adjustable Cylinder SAIJ50BX275-30
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX275-30 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 SAIJ50BX275-30
The AirTAC SAIJ50X275-30 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 245-275 mm usable travel window, allowing you to dial back the nominal 275 mm stroke by up to 30 mm during commissioning without swapping hardware. It delivers 982 N of push thrust at 0.5 MPa and features a SUS304 stainless steel rod for corrosion resistance.
This model uses a G1/4 port and relies on variable air cushions at both ends to manage deceleration. The extruded aluminum barrel includes sensor grooves on both sides, though this specific SKU omits the internal magnet, meaning it is not ready for AirTAC CMSE or DMSE position sensing without modification.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX275-30 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX275-30 |
|---|---|
| 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 SAIJ50BX275-30
| 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 SAIJ50BX275-30 Is Used
Product Changeover
Quickly adjust the 245-275 mm travel window to accommodate different package sizes on a packaging line without changing out the cylinder.
End-Position Tuning
Fine-tune the exact retract position during machine commissioning using the rear stopper, avoiding the need for external mechanical shims.
Variable End Stops
Ideal for diverter gates where the stroke length occasionally needs slight reduction to hit a new lane without repositioning the whole assembly.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX275-30 the Right Cylinder?
Choose this 50 mm bore when an application requires 982 N of push force at 0.5 MPa (or 1374 N at 0.7 MPa). If your process needs less force, stepping down to a 40 mm bore yields 628 N; stepping up to a 63 mm bore provides 1559 N. The adjustable stroke is ideal for product changeovers, letting you fine-tune the retract end-position via the rear stopper screw rather than installing external stops or reverting to a fixed-stroke SAI cylinder.
Because the 275 mm stroke exceeds 300 mm when fully extended with side loads, an external guide is recommended to prevent rod binding. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for fail-safe load holding, consider the SAIL or BSAI series. This unit is dimensionally interchangeable per ISO 15552 and uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) with PT tapered ports.
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 SAIJ50BX275-30 FAQ
The rear adjuster screw lets you shorten the effective stroke by up to 30 mm, creating a 245-275 mm travel window. It acts as a mechanical stop to set the retract end position and works alongside the air cushions for deceleration.
At 0.5 MPa it provides 982 N of push force and 825 N of pull force. At 0.7 MPa, the push force increases to 1374 N.
Authorized Export Seller
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.
Request a Quote for Airtac SAIJ50 Adjustable Cylinder SAIJ50BX275-30
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.