2. Unlocking methods: Featuring automatic and manual unlocking operation modes.
Category: Locking Cylinders , Brand: AIRTAC , Series: SILF
AirTAC SILF Series Front Lock Cylinder SIF40X400 Specifications
- Model: SIF40X400
- Type: Double-acting with mechanical front lock mechanism
- Bore size: 40 mm
- Stroke: 400 mm
- Operating pressure: 0.1–1.0 MPa
- Locking force: 1,200 N (at 0.5 MPa)
- Lock release pressure: ≥0.3 MPa
- Piston speed: 50–800 mm/s
- Port size: M5x0.8 (G1/8 adapter optional)
- Buffer type: Adjustable air cushion
- Mounting style: Basic type (MF1)
- Rod end type: Male thread M16x1.5
- Ambient temperature: -20℃ to 80℃
- Material: Aluminum alloy barrel, Chrome-plated piston rod
- Seal material: NBR (standard), optional Polyurethane
- Weight: 3.8 kg (including mounting brackets)
- Dimensions: 558mm(L) × 56mm(W) × 56mm(H) (retracted length)
- Extended length: 958mm (retracted length + stroke)
- Protection class: IP54 (standard wiper seal)
- Lubrication: Pre-lubricated (Grease-free operation available)
High-precision locking cylinder featuring instant position retention capability through its integrated front mechanical lock. The dual-safety design combines pneumatic holding force with physical locking, achieving zero drift during power/pressure loss. Optimized for vertical applications requiring position memory and emergency stop functions.
- Automated welding fixture position locking
- Elevator safety brake actuation systems
- CNC machine tool clamping units
- Overhead material handling systems
- Solar panel tilt adjustment mechanisms
- Packaging line emergency stop stations
- Lock engagement requires minimum 0.3MPa pressure - install pressure gauge for verification
- Maintain 0.5mm minimum clearance between lock mechanism and mating surface
- For vertical mounting, install drip-proof cover (accessory code: SIF-CAP4)
- Relubricate every 500km of cumulative stroke movement
| Property | Property Value |
|---|---|
| sku | SIF40X400 |
| 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℃ to 80℃ Speed Range: 30-800 mm/s |
| Port Size | PT1/4 |
| Magnet | Non-magnetic |
| Bore Diameter | <40mm> |
| Stroke | <400mm> |
| Lock Position | Front Cover with Lock |
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.



