Airtac SE125 Standard Cylinder SE125X225
The AirTAC Airtac SE125 Standard Cylinder SE125X225 is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 225mm 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
- Stroke225 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125X225
The AirTAC SE125X225 is a double-acting, single-rod ISO 15552 profile cylinder engineered for heavy-duty pneumatic actuation. It delivers a substantial 6136 N push force at 0.5 MPa and up to 8590 N at 0.7 MPa. The square extruded aluminum barrel eliminates external tie rods, presenting a flush, corrosion-resistant exterior that mounts cleanly onto machinery while protecting the 32 mm hard-chrome piston rod and M27x2 thread.
Because this 225 mm stroke is non-standard, it is manufactured as a made-to-order unit rather than pulled from standard stock. It features field-adjustable air cushioning at both ends to tame the kinetic energy of this high-force piston at the stroke limits. Note this SKU lacks a built-in magnet, so it cannot host CMSE or DMSE position sensors without modification.
Airtac SE125 Standard Cylinder SE125X225 Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X225 |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 225 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 SE125X225
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×225 | 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 SE125X225 Is Used
Pallet Rejecter Arm
Drives a heavy-duty rejecter mechanism on automated palletizing lines, using the 6136 N push force at 0.5 MPa to shove full 1-ton pallets onto a bypass conveyor track.
Hydraulic Press Ejection
Ejects dense metal blanks from a stamping press bed, utilizing the 8590 N extend force at 0.7 MPa to break the part free from the die without an external hydraulic line.
Heavy Steel Tube Straightener
Applies lateral bending force to straighten thick-walled steel tubing, relying on the 125 mm bore's massive 1252 kgf max thrust to push the material past its yield point.
Is the Airtac SE125 Standard Cylinder SE125X225 the Right Cylinder?
This 125 mm bore is the largest in the SE series, yielding a maximum thrust of 1252 kgf at 1.0 MPa. If your application does not require this full capacity, step down to the 100 mm bore, which provides 3927 N of push force at 0.5 MPa. As the top tier, there is no larger standard SE bore to step up to for higher loads. The 225 mm stroke is a non-standard made-to-order length; confirm lead times during your RFQ. Since the stroke exceeds 300 mm, be mindful of rod-bearing bending under high side loads and utilize an external guide to prevent premature seal wear.
This plain SE cylinder cannot hold a load if air pressure is lost or the valve is centered; the piston will drift. For applications requiring mid-stroke holding or fail-safe braking, consider the BSE rod-lock variant. To retrofit an existing machine, this unit is dimensionally interchangeable per ISO 15552, sharing standard mounting interfaces and PT1/2 ports.
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 SE125X225 FAQ
The 125 mm bore generates a push force of 6136 N and a pull force of 5734 N at 0.5 MPa. At 0.7 MPa, the push force is 8590 N. The maximum push force is 1252 kgf when operating at the 1.0 MPa pressure limit.
No, this specific SE125X225 SKU does not include a built-in magnet (-S option), meaning it cannot support AirTAC CMSE reed or DMSE electronic position sensors. You would need the -S magnet option for end-of-stroke position detection.
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