Airtac SEJ Adjustable Cylinder SEJ80X250-75S
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 SEJ80X250-75S Technical Specifications
- Model: SEJ80X250-75S
- Type: Double-acting adjustable stroke cylinder
- Bore size: 80mm (±0.1mm manufacturing tolerance)
- Stroke: 250mm (adjustable through mechanical stops)
- Operating pressure: 0.05-1.0 MPa
- Temperature range: -10℃ to 80℃
- Port size: G3/8 (BSPP thread)
- Cushioning type: 75S (adjustable pneumatic cushion at both ends)
- Mounting style: Basic type (axial foot mounting holes)
- Material: Aluminum alloy barrel with hard anodized surface
- Seal material: NBR + PU combination
- Stroke adjustment range: ±5mm from nominal stroke
- Repeat positioning accuracy: ±0.2mm
- Max piston speed: 500-700 mm/s (cushion adjusted)
- Lubrication requirement: ISO VG32 turbine oil recommended
- Weight: ~8.7kg (excluding accessories)
- Dimensions:
- Length: 436mm (fully retracted)
- Width: 115mm (mounting foot span)
- Height: 105mm (barrel diameter with cushion screws)
- Protection rating: IP54 (standard wiper seal configuration)
High-precision adjustable stroke cylinder featuring dual pneumatic cushioning with 75° adjustment screws for precise deceleration control. The hardened piston rod (Cr-Mo steel induction hardened) and wear-resistant guide rings ensure extended service life in high-cycle applications. Includes built-in magnetic sensor slots for position feedback devices.
- Precision press-fit operations in automotive assembly
- Variable stroke material handling systems
- Packaging machine product ejection mechanisms
- Plastic injection molding machine core-pull actuators
- Adjustable clamping fixtures for CNC machining
Operation guidance:
Adjust cushion screws in 1/4-turn increments while monitoring cycle times.
Always maintain lubrication flow rate ≥1 drop/min/port.
Use locknuts after stroke adjustment to prevent positional drift.
| Property | Property Value |
|---|---|
| sku | SEJ80X250-75S |
| Adjustable Stroke | 75mm |
| 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 | PT3/8 |
| Magnet | S-Magnetic |
| Bore Diameter | 80 mm |
| Stroke | <250MM> → <250mm> |
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.