Airtac SGC Standard Cylinder SGC250X350S
The AirTAC Airtac SGC Standard Cylinder SGC250X350S is a genuine double acting ISO 15552 (orig. ISO 6431) tie-rod air cylinder with a Ø250mm bore and 350mm stroke, G1 air ports and adjustable end cushioning. Its large-bore tie-rod build delivers high thrust and drops into standardized ISO 15552 mounting on heavy automation.
- BoreØ250 mm
- Stroke350 mm
- Port sizeG1
- Acting typeDouble acting
- Rod threadM42×2.0
- CushionAdjustable, 60 mm
About the Airtac SGC Standard Cylinder SGC250X350S
Delivering massive thrust for heavy industry, this double-acting tie-rod cylinder pushes with 24543 N and pulls with 23562 N at 0.5 MPa. The four steel tie rods clamp the aluminum barrel to the covers, providing the high rigidity needed to handle such large-bore forces without flexing. A two-way piston seal maintains an internal oil reservoir for continuous lubrication and extended service life.
Because this SKU includes the -S magnet, it is ready for CMSG, DMSG, or EMSG position switches. The Ø250 bore uses a G1 air port and an M42x2.0 rod thread, while the front-cover packing relies on NBR seals since TPU is not offered at this diameter. Plan for about 14726 N of real work at 0.5 MPa, which means it lifts roughly 1251 kg vertically with a 2:1 safety margin.
Airtac SGC Standard Cylinder SGC250X350S Technical Specifications
| Model | Airtac SGC Standard Cylinder SGC250X350S |
|---|---|
| Series | SGC ISO 15552 tie-rod cylinder |
| Bore size | Ø250 mm |
| Stroke | 350 mm |
| Acting type | Double acting |
| Port size | G1 |
| Rod thread | M42×2.0 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 60 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SGC datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Thread options: PT (blank) / G. TPU seals are not available for the Ø250 bore (NBR / Viton only).
Theoretical Output Force (Ø250mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 24544 N | 23562 N |
| 0.7 MPa | 34361 N | — |
| Max (@1.0 MPa) | 5006 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SGC Standard Cylinder SGC250X350S
| SGC | ISO 15552 tie-rod cylinder (double-acting type). |
|---|---|
| 250 | Bore size in mm (125 / 160 / 200 / 250). |
| ×350 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSG / DMSG / EMSG sensors. |
SGC-family variants: SGC (double acting), SGCD (double rod), SGCJ (adjustable stroke). Mounting: LB / FA / FB / CA / CB / CR / TC / FTC / TCM1 / TCM2. Seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SGC Standard Cylinder SGC250X350S Is Used
Heavy Stamp Press Ejection
Provides the raw 24543 N push force required to knock thick steel blanks from a 1000-ton stamping press bed.
Palletizer Clamp Rotation
Swings heavy 1251 kg palletizing clamp arms into position, utilizing the 350 mm stroke to clear the conveyor path.
Foundry Mold Compaction
Applies up to 34360 N at 0.7 MPa to compress refractory sand in automated foundry molding lines.
Is the Airtac SGC Standard Cylinder SGC250X350S the Right Cylinder?
Choosing this 250 mm bore makes sense when the next size down (200 mm, providing 15708 N push at 0.5 MPa) is insufficient, as stepping up here yields 34360 N at 0.7 MPa. There is no larger SGC bore, so if your application exceeds the 5006 kgf theoretical maximum at 1.0 MPa, a multi-cylinder arrangement is required. The integrated -S magnet allows direct mounting of CMSG, DMSG, or EMSG sensors for end-of-stroke confirmation.
Remember that the adjustable 60 mm air cushions only decelerate the piston near the end caps; they do not function as a brake. If the load must remain suspended when air is removed or the valve is centered, you must add an external rod lock or a pilot-operated check valve to prevent drift. Furthermore, with a 350 mm stroke, ensure external guide rails are used to prevent rod bending under heavy side loads.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Long-stroke side load — support the rod end
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; support long strokes at the rod end.
- check Set cushions to minimum, then release gradually.
- check Use correct mounting accessory (LB/FA/FB/CA/CB/CR/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SGC Standard Cylinder SGC250X350S FAQ
This Ø250 mm bore cylinder features a G1 air port, an M42x2.0 rod thread, and a 60 mm adjustable air cushion. It generates 24543 N push and 23562 N pull at 0.5 MPa, 34360 N push and 32986 N pull at 0.7 MPa, with a theoretical maximum of 5006 kgf at 1.0 MPa.
Yes, it is dimensionally interchangeable per the ISO 15552 mounting interface, dropping into the same large-bore fixtures as any standard ISO cylinder. The included -S magnet allows direct mounting of CMSG, DMSG, or EMSG switches for position sensing.
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