Airtac SEJ Adjustable Cylinder SEJ40X75-20
2. Asymmetric bidirectional piston seal structure with compact dimensions and integrated oil reservoir function;
3. Rodless square aluminum tubing construction enhances corrosion resistance;
4. Adjustable cushioning mechanism ensures smooth stroke modulation;
5. Customizable configurations with multiple cylinder variants and mounting accessories;
6. High-temperature resistant sealing materials enable operational range of 0-150°C.
Category: Adjustable Cylinders | Brand: AirTAC | Series: SEJ
AirTAC SEJ Adjustable Cylinder SEJ40X75-20 Technical Specifications
- Model: SEJ40X75-20
- Type: Double-acting adjustable stroke cylinder
- Bore size: 40 mm
- Stroke: 75 mm (±1.5mm adjustment range)
- Operating pressure: 0.1–0.9 MPa
- Temperature range: -20℃ to 80℃
- Cushioning type: Adjustable pneumatic cushion (both ends)
- Mounting style: Front flange with integrated mounting slots
- Port size: M5x0.8 (standard) / NPT1/8 optional
- Piston rod material: Chrome-plated steel (S45C)
- Cylinder tube: Hard anodized aluminum alloy
- Seal material: Nitrile rubber (NBR) / Polyurethane (PU) options
- Adjustment mechanism: Hex socket screw with locknut (tool-operated)
- Weight: 1.85 kg ±3%
- Dimensions:
- Extended length: 192 mm
- Retracted length: 117 mm
- Body width: 60 mm (including mounting flanges)
- Height: 62 mm (port center to base)
The SEJ40X75-20 features a precision-ground piston rod (Ra≤0.4μm) and integrated shock absorption system with 15° adjustable cushioning angles. Its corrosion-resistant design includes IP65-rated wiper seals for harsh environments. The dual-ported exhaust allows flow rate optimization, achieving ≤0.15 m/s² vibration levels at full stroke.
- Pick-and-place robotic end effectors requiring millimeter positioning
- Glass cutting machinery with variable material thickness
- Pharmaceutical tablet press force adjustment systems
- Automated welding jigs needing shock-free deceleration
- Semiconductor wafer handling with cleanroom compatibility
Installation guidelines:
Align cylinder axis within ±0.5° of load direction. For stroke adjustment:
1) Loosen locknut 2) Turn hex screw (0.75mm pitch per rotation) 3) Re-tighten
at 2.5-3 N·m torque. Lubricate with ISO VG32 hydraulic oil monthly.
| Property | Property Value |
|---|---|
| sku | SEJ40X75-20 |
| Adjustable Stroke | <20mm> |
| Seal Material | Polyurethane |
| 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:-20-70°C Speed Range:30-800mm/s |
| Port Size | PT1/4 |
| Magnet | Non-magnetic |
| Bore Diameter | <40mm> |
| Stroke | 75mm |
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.