Airtac SGCD Dual Rod Cylinder SGCD125X400
The AirTAC Airtac SGCD Dual Rod Cylinder SGCD125X400 is a genuine double acting, double rod ISO 15552 (orig. ISO 6431) tie-rod air cylinder with a Ø125mm bore and 400mm stroke, G1/2 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.
- BoreØ125 mm
- Stroke400 mm
- Port sizeG1/2
- Acting typeDouble acting, double rod
- Rod threadM27×2.0
- CushionAdjustable, 40 mm
About the Airtac SGCD Dual Rod Cylinder SGCD125X400
Delivering 5734 N of thrust in both directions at 0.5 MPa, this large-bore ISO 15552 tie-rod cylinder uses a twin-rod piston to equalize push and pull areas. The G1/2 port feeds the 125 mm bore, generating a safe working load of roughly 3440 N for real work, which translates to lifting about 292 kg vertically with a 2:1 margin.
Four steel tie rods clamp the aluminum barrel securely, while the symmetric load path prevents torsional twist. This non-magnetic SKU cannot host CMSG or DMSG sensors, but the -S variant adds that capability. Standard TPU seals handle -20 to +70 C, with a Viton H option extending heat resistance to 150 C.
Airtac SGCD Dual Rod Cylinder SGCD125X400 Technical Specifications
| Model | Airtac SGCD Dual Rod Cylinder SGCD125X400 |
|---|---|
| Series | SGC ISO 15552 tie-rod cylinder |
| Bore size | Ø125 mm |
| Stroke | 400 mm |
| Acting type | Double acting, double rod |
| Port size | G1/2 |
| Rod thread | M27×2.0 |
| 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, 40 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 (Ø125mm)
| Pressure | Force (both ways) | — |
|---|---|---|
| 0.5 MPa | 5734 N | 5734 N |
| 0.7 MPa | 8027 N | 8027 N |
| Max (@1.0 MPa) | 1251 kgf | |
Double-rod: the rod passes through both covers, so output force is equal in both directions.
Model Code: Airtac SGCD Dual Rod Cylinder SGCD125X400
| SGCD | ISO 15552 tie-rod cylinder (double-rod type). |
|---|---|
| 125 | Bore size in mm (125 / 160 / 200 / 250). |
| ×400 | 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 SGCD Dual Rod Cylinder SGCD125X400 Is Used
Dual-End Transfer Pusher
Drives a synchronized pair of transfer fingers on a conveyor line, using the equal force both ways to push and retract loads without speed variation.
Symmetric Lift Platform
Raises and lowers a 292 kg vertical lift fixture, relying on the twin rods to prevent torsional twist and maintain platform alignment.
Twin-Spindle Clamp
Actuates two opposing clamping spindles simultaneously from a single piston, ensuring perfectly balanced holding force on large weldments.
Is the Airtac SGCD Dual Rod Cylinder SGCD125X400 the Right Cylinder?
When sizing this 125 mm bore, stepping up to the 160 mm version yields 9425 N each way at 0.5 MPa, while dropping to a smaller bore reduces output. Choose this double-rod design when your mechanism demands anti-rotation guidance, twin tooling driven from both ends, or a symmetric load path. Mounting options include FA, LB, TC, FTC, TCM1, and TCM2 brackets. Because the 400 mm stroke exceeds 500 mm, you must guide the load externally to prevent side-load binding. Note this specific SKU lacks a magnet, so it cannot accept position sensors.
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 SGCD Dual Rod Cylinder SGCD125X400 FAQ
Because it is a double-rod cylinder, force is equal in both directions using the pull-side area. It delivers 5734 N at 0.5 MPa and 8028 N at 0.7 MPa each way, with a theoretical maximum of 1169 kgf at 1.0 MPa. The bore uses a G1/2 port.
No, a standard pneumatic cylinder drifts when air is removed or a valve is centered. The adjustable 40 mm air cushions only decelerate the piston near stroke end. To hold a load securely, you must add an external rod lock or a pilot-operated check valve.
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