Airtac SE125 Standard Cylinder SE125BX1000
The AirTAC Airtac SE125 Standard Cylinder SE125BX1000 is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 1000mm stroke, PT1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ125 mm
- Stroke1000 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125BX1000
The AirTAC SE125BX1000 is a double-acting, single-rod ISO 15552 profile cylinder engineered for heavy-duty linear motion. It delivers a substantial 6136 N push force at 0.5 MPa and utilizes a 1000 mm stroke to move large masses across long distances. The square extruded aluminum barrel omits external tie rods, yielding a compact, corrosion-resistant body that mounts flush into tight machine frames while maintaining the standardized ISO 15552 footprint for seamless retrofitting.
This specific configuration features a SUS304 stainless steel rod (code B) for superior resistance to moisture and corrosive washdown environments. Operating at speeds of 30-500 mm/s, it relies on field-adjustable pneumatic cushioning at both ends to decelerate the heavy 125 mm piston smoothly near the stroke ends, preventing hard impact damage. Note that this unit lacks a built-in position sensor magnet, so external end-of-stroke detection must be mechanically triggered or mounted separately.
Airtac SE125 Standard Cylinder SE125BX1000 Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125BX1000 |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 1000 mm |
| Acting type | Double acting |
| Port size | PT1/2 |
| Rod thread | M27×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 40 mm |
| Max stroke | Up to 1500 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 (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SE125 Standard Cylinder SE125BX1000
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×1000 | 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 SE125 Standard Cylinder SE125BX1000 Is Used
Automotive Body Welding Press
Provides the 6136 N push force required to clamp heavy steel automotive body panels into a fixed welding jig over a 1000 mm travel distance.
Palletizer Ejection Gate
Drives a heavy ejection gate on a high-speed end-of-line palletizer, using its 1000 mm stroke to clear large palletized goods before the next cycle.
Wastewater Treatment Valve
Actuates a heavy-duty knife gate valve in a municipal wastewater plant, leveraging the SUS304 stainless rod to withstand constant humid and chemically corrosive exposure.
Is the Airtac SE125 Standard Cylinder SE125BX1000 the Right Cylinder?
Selecting this 125 mm bore cylinder is appropriate when applications require maximum thrust, generating 6136 N of push at 0.5 MPa. If your load demands less force, stepping down to the 100 mm bore reduces the push output to 3927 N, which may better suit standard actuation tasks and conserve compressed air. Since 125 mm is the largest standard SE bore, there is no larger step-up option within the series. To match an existing ISO 15552 footprint for replacement, verify the 1000 mm stroke, PT1/2 port size, and basic mounting style.
Because this model features a 1000 mm stroke, the unsupported length of the 32 mm diameter SUS304 rod is highly susceptible to bending under side loads. An external guide rail or linear bearing must be integrated alongside the cylinder to prevent rod-bearing wear and premature seal failure. Additionally, the adjustable air cushion only decelerates the piston near stroke end; it does not hold the load if air pressure is lost, so a separate pilot-operated check valve or external rod lock mechanism is required for fail-safe position holding.
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 SE125 Standard Cylinder SE125BX1000 FAQ
At 0.5 MPa, this 125 mm bore cylinder generates 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force increases to 8590 N, with a maximum push capacity of 1252 kgf at 1.0 MPa. The operating speed range is 30-500 mm/s.
Yes, it is dimensionally interchangeable per ISO 15552, serving as a drop-in replacement for other standard ISO 15552 profile cylinders using identical mounting hardware. However, this specific SKU lacks a built-in magnet, meaning it cannot trigger AirTAC CMSE or DMSE position sensors without modifying the configuration.
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