Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X400-20
The AirTAC Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X400-20 is a genuine double acting, adjustable stroke 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, adjustable stroke
- Rod threadM27×2.0
- CushionAdjustable, 40 mm
About the Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X400-20
Delivering 6136 N of push force at 0.5 MPa, this large-bore ISO 15552 tie-rod cylinder uses four steel rods to clamp its aluminum barrel for high rigidity. The G1/2 port feeds a 32 mm rod with a 40 mm adjustable air cushion at each end. It handles a safe working load of roughly 3682 N, which translates to lifting about 313 kg vertically with a 2:1 margin.
The -20 code means an external adjuster can shorten the extend stroke by up to 20 mm on site, giving a usable range of 380 to 400 mm without changing the cylinder itself. You can swap this unit into existing fixtures using the ISO 15552 mounting interface, and the default TPU seals provide long life across -20 to +70 C. Because this SKU lacks the -S option, it cannot take a magnetic sensor.
Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X400-20 Technical Specifications
| Model | Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X400-20 |
|---|---|
| Series | SGC ISO 15552 tie-rod cylinder |
| Bore size | Ø125 mm |
| Stroke | 400 mm |
| Acting type | Double acting, adjustable stroke |
| 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 SGCJ125~160 Adjustable Cylinder SGCJ125X400-20
| SGCJ | ISO 15552 tie-rod cylinder (adjustable-stroke 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 SGCJ125~160 Adjustable Cylinder SGCJ125X400-20 Is Used
Press Fit Tuning
Dial in the exact 380 to 400 mm extend stop on-site to seat bearings without overstressing the fixture, using the external adjuster for precise end-position control.
Divertor Gate Stop
Set a custom extend length to act as a physical product stop, easily shortening the stroke by 20 mm to accommodate different package sizes on the fly.
Pallet Positioning
Lift and position heavy pallets using the 6136 N thrust, tweaking the extend endpoint to align with varying pallet heights without re-mounting hardware.
Is the Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X400-20 the Right Cylinder?
Size this 125 mm bore against the 160 mm option, which jumps to 10053 N of push at 0.5 MPa, or drop down if less force is needed. The adjustable stroke is ideal when you need to fine-tune the extend end position on-site or want a shared spare across slightly different stroke variants. Mounting choices include FA, LB, TC, FTC, TCM1, and TCM2. Since the 400 mm stroke exceeds 500 mm is false here at 400 mm, standard side-load rules apply, but always guide the rod for best seal life. This non-magnet version cannot use CMSG or DMSG sensors; add the -S variant for position detection.
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 SGCJ125~160 Adjustable Cylinder SGCJ125X400-20 FAQ
At 0.5 MPa it provides 6136 N push and 5734 N pull. At 0.7 MPa it provides 8590 N push and 8028 N pull. The theoretical maximum force is 1251 kgf at 1.0 MPa. It uses a G1/2 port and a 32 mm rod.
The nominal 400 mm stroke is the maximum length. An external stop screw lets you shorten the extend stroke by up to 20 mm on-site, giving a usable range of 380 to 400 mm. The retract end remains fixed. This mechanism only sets the end position; it does not lock the load.
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