Airtac SE50 Standard Cylinder SE50AX425S
The AirTAC Airtac SE50 Standard Cylinder SE50AX425S is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø50mm bore and 425mm stroke, PT1/4 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
- Stroke425 mm
- Port sizePT1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
About the Airtac SE50 Standard Cylinder SE50AX425S
The AirTAC SE50AX425S is a double-acting single-rod ISO 15552 profile cylinder engineered for demanding washdown environments. Equipped with a SUS420J2 stainless steel rod (code A), it provides 982 N of push force at 0.5 MPa and features a 425 mm stroke. The square extruded aluminum barrel eliminates external tie rods, yielding a compact, flush-mounting body that resists corrosion and simplifies sensor placement along its three integrated grooves.
Because the 425 mm stroke exceeds the standard 400 mm increment, this unit is manufactured as a made-to-order configuration. It includes a built-in magnet (code S) for seamless integration with AirTAC CMSE reed and DMSE electronic position sensors. Field-adjustable pneumatic cushioning at both ends allows you to fine-tune end-of-stroke deceleration, softening hard impacts during high-speed cycling.
Airtac SE50 Standard Cylinder SE50AX425S Technical Specifications
| Model | Airtac SE50 Standard Cylinder SE50AX425S |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 425 mm |
| Acting type | Double acting |
| Port size | PT1/4 |
| 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 (0–150 °C with FKM seals) |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max stroke | Up to 1200 mm |
Specifications follow the official AirTAC SE series datasheet and ISO 15552 / VDMA 24562 dimensions. Confirm against the product label before installation. Port options: PT (standard) / G (BSPP).
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 SE50 Standard Cylinder SE50AX425S
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 50 | Bore size in mm. |
| ×425 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSE / DMSE sensor sensing. |
Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B). Seals: TPU (blank) / FKM high-temp (H) / NBR (N). Thread: PT (blank) / G. Mounting: Basic, LB, FA, FB, CA, CB, CR, TC, FTC, TCM1, TCM2. Related SE-family variants: SED (double rod), SEJ (adjustable stroke), BSE (rod lock), BSED (double-rod rod lock).
Where the Airtac SE50 Standard Cylinder SE50AX425S Is Used
Flow Wrapper Cutting Head
Drives the rotary knife assembly on a food packaging line, using the 425 mm stroke to cycle the cutting head while the SUS420J2 rod withstands daily washdowns.
Bottle Diverter Gate
Actuates a sorting flap on a beverage conveyor, pushing product lanes with 982 N of thrust at 0.5 MPa while the CMSE sensor tracks gate position.
Lab Sample Indexer
Stages fluid racks in an analytical lab station, extending 425 mm to present samples to a dispenser, relying on the adjustable cushion to protect glass components.
Is the Airtac SE50 Standard Cylinder SE50AX425S the Right Cylinder?
This 50 mm bore generates 982 N push at 0.5 MPa, sitting perfectly between the 40 mm bore (628 N) and the 63 mm bore (1559 N). If your payload demands less force or a smaller footprint, step down to the 40 mm model; if you need heavier thrust, the 63 mm bore is your upgrade path. Keep in mind that a standard SE cylinder does not hold a load when air pressure is lost or the valve is centered—the piston will drift. For position-holding safety, consider the BSE rod lock variant or an external pilot-operated check valve.
At 425 mm of stroke, the 20 mm rod and M16x1.5 thread experience significant leverage under side loads. To prevent premature rod-bearing bending and seal failure, always pair this length with an external guide rail to support the payload and prevent shaft deflection. For retrofitting, this cylinder is dimensionally interchangeable per ISO 15552, matching standard mounting accessories and PT1/4 porting.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/G)
- ✓ Magnet (-S) for CMSE/DMSE 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 (LB/FA/FB/CA/CB/CR/TC/FTC/TCM1/TCM2).
- check Installation by qualified personnel per AirTAC docs.
Airtac SE50 Standard Cylinder SE50AX425S FAQ
At 0.5 MPa, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. At 0.7 MPa, the push force is 1374 N, with a maximum push capacity of 200 kgf at 1.0 MPa. It operates between 0.15-1.0 MPa and runs at speeds of 30-800 mm/s.
Yes, it is dimensionally interchangeable per ISO 15552, meaning it matches standard mounting footprints and hardware. However, the adjustable air cushion only decelerates the piston near stroke end; it is not a brake. The cylinder will not hold a load if air is lost—if you need failsafe position holding, use the BSE rod lock variant.
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