Airtac SAI50 Standard Cylinder SAI50X1250S
The AirTAC SAI50 Standard Cylinder SAI50X1250S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 1250mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ50 mm
- Stroke1250 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 SAI50 Standard Cylinder SAI50X1250S
The AirTAC SAI50X1250-S is a double-acting ISO 15552 profile cylinder engineered for extra-long 1250 mm strokes. It delivers 982 N of push force and 825 N of pull force at 0.5 MPa, making it well-suited for extended-travel material handling. This made-to-order unit features a standard carbon steel piston rod and a PT tapered port thread.
Because this variant includes the -S magnet option, it natively supports CMSE and DMSE reed or solid-state sensors. The extruded aluminum barrel integrates sensor grooves on both sides, simplifying switch mounting along the extended stroke. For high-temperature environments up to 70 C, the standard TPU seals provide reliable service.
Airtac SAI50 Standard Cylinder SAI50X1250S Technical Specifications
| Model | Airtac SAI50 Standard Cylinder SAI50X1250S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 1250 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 SAI50 Standard Cylinder SAI50X1250S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×1250 | 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 SAI50 Standard Cylinder SAI50X1250S Is Used
Extended Transfer
Drives long-travel pallet shuttles across 1250 mm distances where standard strokes fall short.
Vertical Lift
Elevates tiered storage platforms using 982 N of push force, requiring external vertical guides.
Automated Press
Applies sustained clamping pressure on large fabricated panels during slow assembly cycles.
Is the Airtac SAI50 Standard Cylinder SAI50X1250S the Right Cylinder?
Choosing this 50 mm bore over the smaller 40 mm variant upgrades your thrust from 628 N to 982 N at 0.5 MPa without stepping up to the larger 63 mm bore, which offers 1559 N. This specific 1250 mm stroke exceeds the standard maximum of 1200 mm, classifying it as a non-standard, made-to-order configuration.
At 1250 mm, the unsupported piston rod is highly susceptible to bending under side loads. You must use an external linear guide or a guided cylinder carriage to prevent rod-bearing damage. Additionally, the adjustable air cushions at both ends decelerate the piston but do not lock the load; if pressure drops, the rod will drift. Use an external pilot-operated check valve or the SAIL lock variant for secure position holding.
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 SAI50 Standard Cylinder SAI50X1250S FAQ
At 0.5 MPa, this double-acting cylinder provides 982 N of push force and 825 N of pull force. At 0.7 MPa, the push force increases to 1374 N.
Yes, the SAI50X1250-S is dimensionally interchangeable per ISO 15552. It serves as a direct replacement for other ISO 15552 profile cylinders, matching the 50 mm bore, G1/4 port, and M16x1.5 rod thread.
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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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