Airtac SGCD Dual Rod Cylinder SGCD125X900S
The AirTAC Airtac SGCD Dual Rod Cylinder SGCD125X900S is a genuine double acting, double rod ISO 15552 (orig. ISO 6431) tie-rod air cylinder with a Ø125mm bore and 900mm 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
- Stroke900 mm
- Port sizeG1/2
- Acting typeDouble acting, double rod
- Rod threadM27×2.0
- CushionAdjustable, 40 mm
About the Airtac SGCD Dual Rod Cylinder SGCD125X900S
Delivering 5734 N of thrust in both directions at 0.5 MPa, this large-bore ISO 15552 tie-rod cylinder features a piston rod exiting both covers. Because the pressure area is identical on each face, push and pull forces remain perfectly equal. This makes it good for about 3440 N of real work, roughly 292 kg lifted vertically with a 2:1 safety margin. The G1/2 port supplies ample air flow for the 125 mm bore.
Four steel tie rods clamp the aluminum barrel to the covers, providing rigid structural integrity and a highly durable two-way piston seal. The built-in -S piston magnet allows precise position sensing using CMSG, DMSG, or EMSG switches. For high-temperature environments up to 150 degrees C, Viton H seals are available instead of the standard TPU. Since the 900 mm stroke is quite long, external guide support is strongly recommended to prevent rod bending under side loads.
Airtac SGCD Dual Rod Cylinder SGCD125X900S Technical Specifications
| Model | Airtac SGCD Dual Rod Cylinder SGCD125X900S |
|---|---|
| Series | SGC ISO 15552 tie-rod cylinder |
| Bore size | Ø125 mm |
| Stroke | 900 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 SGCD125X900S
| SGCD | ISO 15552 tie-rod cylinder (double-rod type). |
|---|---|
| 125 | Bore size in mm (125 / 160 / 200 / 250). |
| ×900 | 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 SGCD125X900S Is Used
Symmetric Conveyor Divert
Drives a dual-sided diverting arm across a belt. The equal push and pull force ensures consistent pressure on packages moving in either direction without twisting.
Twin-Spindle Machining Clamp
Clamps two metal workpieces simultaneously. A rod extending from each end actuates opposing fixtures with identical 5734 N of force at 0.5 MPa.
Long-Stroke Pallet Stop
Acts as a 900 mm retractable stop gate for heavy pallets. The extended stroke allows wide clearance for varied pallet widths entering a cell.
Is the Airtac SGCD Dual Rod Cylinder SGCD125X900S the Right Cylinder?
When sizing this double-rod unit, the 125 mm bore sits at the lower edge of the SGCD range, offering 5734 N equal force at 0.5 MPa. If your application requires less force, you must drop out of the SGCD family entirely, as 125 mm is the smallest available bore. If you need more power, stepping up to the 160 mm bore yields 9425 N both ways. Choose the double-rod configuration when you need anti-rotation stability, symmetric load paths, twin tooling driven from both ends, or a rear-mounted sensor cam. Mounting options include FA, LB, TC, FTC, TCM1, and TCM2. The -S suffix ensures you have the magnet required for CMSG, DMSG, or EMSG sensors. At 900 mm of stroke, always use an external guide to manage side loads and prevent rod deflection.
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 SGCD125X900S FAQ
As a double-rod cylinder, force is equal in both directions: 5734 N at 0.5 MPa, 8028 N at 0.7 MPa, and a theoretical max of 1169 kgf at 1.0 MPa. It operates at 30-500 mm/s, uses a G1/2 port, and features a 40 mm adjustable air cushion at each end.
No, a plain cylinder drifts on air loss because the air cushion only decelerates near stroke end and does not act as a brake. For vertical load holding, you must add an external rod lock or a pilot-operated check valve.
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