Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X100
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X100 is a genuine double-acting ISO 15552 profile cylinder with a Ø50mm bore, 100mm stroke and a built-in spring-applied, air-released mechanical lock in the front cover — it holds the load at the extended (rod-out) stroke end even when air is lost.
- BoreØ50 mm
- Stroke100 mm
- Port sizeG1/4
- Lock positionFront cover
- Rod threadM16×1.5
- UnlockAir + manual
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X100
The AirTAC SAILF50X100 is a double-acting ISO 15552 profile cylinder featuring a mechanical lock integrated into the front cover. A spring-applied, air-released mechanism engages when the piston reaches the extended stroke end, securely holding the 20mm carbon steel rod in place without requiring continuous live pressure. You can release the lock automatically by supplying air to the release port or by using the manual lever. Delivering 982N of push force at 0.5 MPa, it provides robust load handling for vertical or horizontal holding tasks.
Unlike a plain SAI cylinder, this SAILF model ensures power-loss safety by clamping the rod specifically at the extended end. The variable air cushion at the locker end is 20mm, notably shorter than the 30mm cushion on the rear free end, which is a critical spec for deceleration tuning. The lock is a static holding device that engages after the cylinder stops; it does not brake a moving rod. For mid-stroke clamping requirements, the BSAI clamp-lock series is the correct alternative.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X100 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X100 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø50 mm |
| Stroke | 100 mm |
| Acting type | Double acting, with lock |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| Lock type | Spring-applied, air-released (front cover) |
|---|---|
| Unlock | Automatic (air) & manual |
| Operating pressure | 0.15 – 1.0 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable (30 mm free end / 20 mm lock end) |
| Max stroke | Up to 1200 mm |
Specifications follow the official AirTAC SAIL datasheet (ISO 15552). Confirm against the product label before installation. Port options: PT / G.
How the Lock Holds
The lock is spring-applied and air-released: a spring drives a lock pin into the rod when the release air is removed, so the load is held at the extended (rod-out) stroke end without live pressure. Supply air to the release port to unlock automatically, or use the manual release lever.
The lock engages only when the piston reaches the stroke terminal on the front-cover side — it is a static end-of-stroke hold, not a mid-stroke clamp and not a moving-rod brake. For locking at any position along the stroke, choose a BSAI clamp-lock instead.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Cylinder thrust is separate from the lock's holding capability. Actual usable force is lower than theoretical due to friction and back-pressure — size with a margin.
Where the Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X100 Is Used
Vertical Lift Safety
Holds an extended vertical load securely in place during a sudden air pressure loss, preventing sudden drops on lifting platforms.
Flow Control Diverter
Maintains a diverter arm in the extended position without consuming continuous compressed air, saving energy on high-cycle packaging lines.
Machine Guard Hold
Keeps a safety guard or gate locked open at the end of its stroke until the operator releases the lock via the manual lever or air signal.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X100 the Right Lock Cylinder?
Select this 50mm bore when your application demands 982N push force at 0.5 MPa (or 1767N at 0.7 MPa) and a secure hold at the extended stroke end. If your load-holding requirement is at the retracted position, choose the SAILB50X100 instead. Because the lock only engages at the stroke terminal, you must select a BSAI cylinder if you need to hold the load at an arbitrary mid-stroke point. For reliable operation, avoid using a fast-exhaust valve with this lock cylinder; use an independent-exhaust solenoid valve to prevent back-pressure on the locker side from accidentally releasing the lock. If human safety depends on the load staying extended, add an independent safety measure as well.
When replacing this unit, verify the 100mm stroke, front locker position, 1/4 PT port threads, and the standard carbon steel rod. The extruded aluminum barrel includes sensor grooves on both sides for mounting position detection. Although this model does not include a magnet, adding the -S option enables compatibility with AirTAC CMSE reed and DMSE electronic solid-state sensors.
Quick checklist
- ✓ Hold needed at the extended (rod-out) end?
- ✓ Or lock anywhere → use BSAI
- ✓ Independent-exhaust valve fitted
- ✓ Port/thread type (PT/G)
- ✓ Extra safety measure for people
Airtac SAILF Front Locking Pneumatic Cylinder SAILF50X100 FAQ
At a 0.5 MPa operating pressure, the SAILF50X100 provides 982N of push force and 825N of pull force. At 0.7 MPa, the push force increases to 1374N.
The lock is spring-applied and air-released, engaging only when the piston reaches the extended stroke end in the front cover. It provides a static hold after the cylinder stops, not a dynamic brake. Unlocking requires supplying release air or using the manual lever.
Related AirTAC Lock & Standard Cylinders
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