Airtac SGC Standard Cylinder SGC125X420
The AirTAC Airtac SGC Standard Cylinder SGC125X420 is a genuine double acting ISO 15552 (orig. ISO 6431) tie-rod air cylinder with a Ø125mm bore and 420mm 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
- Stroke420 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- CushionAdjustable, 40 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SGC Standard Cylinder SGC125X420
Delivering 6136 N of push force at 0.5 MPa, this double-acting 125 mm bore tie-rod cylinder handles demanding linear motion across a 420 mm stroke. Four steel tie rods clamp the aluminium barrel to the covers for high rigidity, while the two-way piston seal maintains an internal oil reservoir for long service life. Plan for about 3682 N of real work, which lifts roughly 313 kg vertically with a 2:1 margin.
Because this SKU lacks the -S magnet, it cannot accept CMSG, DMSG or EMSG position switches. The design uses the standard ISO 15552 mounting interface, so it drops directly into existing large-bore fixtures. It features a G1/2 port, an M27x2.0 rod thread, and adjustable 40 mm air cushions at both ends to decelerate the piston smoothly.
Airtac SGC Standard Cylinder SGC125X420 Technical Specifications
| Model | Airtac SGC Standard Cylinder SGC125X420 |
|---|---|
| Series | SGC ISO 15552 tie-rod cylinder |
| Bore size | Ø125 mm |
| Stroke | 420 mm |
| Acting type | Double acting |
| 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 | 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 SGC Standard Cylinder SGC125X420
| SGC | ISO 15552 tie-rod cylinder (double-acting type). |
|---|---|
| 125 | Bore size in mm (125 / 160 / 200 / 250). |
| ×420 | 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 SGC125X420 Is Used
Pallet Diversion Gate
Actuates a heavy diverter arm on a packaging line to route loaded pallets, utilising the 6136 N push force to overcome lateral friction.
Lift and Transfer Unit
Raises 300 kg product totes within a 420 mm vertical envelope, relying on the rigid tie-rod construction to maintain alignment under load.
Press Ejection Mechanism
Ejects formed metal blanks from a stamping die, using the adjustable 40 mm air cushions to soften the impact at the end of the stroke.
Is the Airtac SGC Standard Cylinder SGC125X420 the Right Cylinder?
When sizing this 125 mm bore unit, verify your actual load against the 6136 N push rating at 0.5 MPa. If you need less force, there is no smaller bore in the SGC family, so look to other series; if your application requires more thrust, step up to the 160 mm bore which provides 10053 N at 0.5 MPa. Since this 420 mm stroke exceeds 500 mm, ensure external guide rails support the load to prevent rod bending and premature seal wear.
Note that a plain SGC cylinder does not hold its position if air pressure drops or the valve is centred, as the piston will drift and the cushion only decelerates near stroke end. To suspend a load safely, install an external rod lock or a pilot-operated check valve. Without the -S suffix, this specific unit cannot mount magnetic 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 SGC Standard Cylinder SGC125X420 FAQ
The SGC125X420 delivers 6136 N push and 5734 N pull at 0.5 MPa, 8590 N push and 8028 N pull at 0.7 MPa, with a theoretical maximum of 1251 kgf at 1.0 MPa. It uses a G1/2 air port and an M27x2.0 piston rod thread.
No, this specific SKU does not include a magnet. You must purchase the -S variant to mount CMSG, DMSG or EMSG switches. The unit follows the ISO 15552 mounting interface, allowing interchangeability with standard large-bore fixtures.
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1-Year Warranty
Covers non-human-caused product damage.
Made to Order
Large-bore cylinders built to order — confirm lead time.
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