
2. SG series adopts dual Y-type unidirectional piston seals with self-compensating design, delivering extended service life and low starting pressure. SGC series features space-saving asymmetric bidirectional seals with oil reservoir functionality;
3. SG series utilizes steel cylinder construction with exceptional impact resistance;
4. SGC series employs aluminum cylinder tubes compatible with optional magnetic piston position sensing (not available for SG series);
5. Precision adjustable pneumatic cushioning mechanism ensures smooth deceleration;
6. Comprehensive range of bore sizes and mounting accessories for flexible system integration;
7. High-temperature resistant seals enable reliable operation from 0°C to 150°C.
Category: Standard Cylinders | Brand: AirTAC | Series: SGJ Adjustable Steel Cylinder Series
AirTAC SGJ125X450-20 Steel Pipe Adjustable Cylinder Specifications
- Model: SGJ125X450-20
- Type: Double-acting adjustable cushion cylinder (steel pipe structure)
- Bore size: Ø125 mm
- Stroke: 450 mm (adjustable stroke mechanism)
- Rod diameter: Ø45 mm (chrome-plated steel)
- Operating pressure: 0.05–0.9 MPa
- Temperature range: -20℃ to 80℃
- Port size: G1/2 (ISO standard thread)
- Cushion type: Adjustable hydraulic buffer (both ends)
- Mounting style: Basic type (optional flange/feet mounting)
- Material: Steel cylinder tube, aluminum end caps
- Seal material: NBR (nitrile rubber)
- Weight: 24.8 kg ±2%
- Dimensions: 790mm(L) × 155mm(W) × 155mm(H) (at full extension)
- Max theoretical force: 9,978N @0.63MPa (push side)
- Speed range: 50–1000 mm/s (lubricated operation)
- ISO certification: 6431, 15552 compliant
Industrial-grade adjustable stroke cylinder with precision-machined steel construction, featuring dual hydraulic cushioning for shock absorption. The corrosion-resistant chrome rod and modular design enable customization with optional magnetic sensors (not included). Requires ISO VG32 hydraulic oil mist lubrication for optimal performance.
- Heavy-duty press machine actuation systems
- Automotive assembly line positioning devices
- Die-casting machine ejection mechanisms
- Paper roll handling equipment
- Shipbuilding fixture clamping controls
 Installation note: 
            Maintain 0.5-1mm clearance between rod end and load during alignment. 
            Use locknuts (M45x1.5 thread) for position adjustment. Lubricate through 
            air supply (oil mist type) at 1 drop/m³ airflow.
 Installation note: 
            Maintain 0.5-1mm clearance between rod end and load during alignment. 
            Use locknuts (M45x1.5 thread) for position adjustment. Lubricate through 
            air supply (oil mist type) at 1 drop/m³ airflow.
        | Property | Property Value | 
|---|---|
| sku | SGJ125X450-20 | 
| Adjustable Stroke | <20mm> | 
| Seal Material | NBR | 
| Understood. Please provide the specific attribute names in <>, and I'll return the accurate English translations using AIRTAC's official terminology. Example: User input: <缸径> My output: Bore | Operating Temperature: -20°C to 70°C Speed Range: 30 to 500 mm/s | 
| Port Size | PT 1/2 | 
| Cushion Stroke | <40mm> | 
| Bore Diameter | 125mm | 
| Stroke | 450mm | 
Returns will be accepted for up to 15 days of Customer’s receipt or tracking number on Not used items. You, as a Customer, are obliged to inform us via email before you return the item, only in the case of:
- Received the wrong item.
- Item arrived not as expected (ie. damaged packaging).
- Item had defects.
- Over delivery time.
- The shipper does not allow the goods to be inspected before payment.
The returned product(s) must be in the original packaging, safety wrapped, undamaged and unworn. This means that the item(s) must be safely packed in a carton box for protection during transport, possibly the same carton used to ship to you as a customer.
 
              