Airtac BSED Clamping Double Acting Cylinder BSED125X100S
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED125X100S combines a double-rod ISO 15552 cylinder — a Ø32mm rod out BOTH ends for equal force both directions — with an integrated spring-applied, air-released ROD LOCK that holds up to 8600 N in either direction if air is lost. Ø125mm bore, 100mm stroke, PT1/2 ports, G1/8 lock-release.
- BoreØ125 mm
- Stroke100 mm
- Static holding force8600 N
- ConfigurationDouble rod + lock
- Cylinder portPT1/2
- Lock-release portG1/8
About the Airtac BSED Clamping Double Acting Cylinder BSED125X100S
The AirTAC BSED125X100S is a double-acting, double-rod ISO 15552 profile cylinder featuring an integrated spring-applied, air-released rod lock. A rod exits both ends, providing equal drive force of 5734 N each way at 0.5 MPa and a maximum of 819 kgf at 0.7 MPa. The rear rod is ideal for mounting tooling, flags, or anti-rotation guides.
This fail-safe collet lock delivers a massive 8600 N static holding force with zero live air required. It engages bidirectionally only after the rod stops, while a dedicated G1/8 release port manages the unlock pressure. The extruded aluminum barrel has no external tie rods, and the -S magnet supports CMSE reed and DMSE electronic sensors.
Double Rod + 8600 N Rod Lock (Ø125mm)
A rod exits both ends for symmetric force and back-rod tooling, and a spring clamps the collet so the Airtac BSED Clamping Double Acting Cylinder BSED125X100S holds its position in both directions on air loss or E-stop. Apply 0.15–0.7 MPa to the G1/8 release port to unlock. Engage only after the rod has stopped (not a dynamic brake), and release only when both piston sides are pressure-balanced; allow ≥0.5 s for full release.
Airtac BSED Clamping Double Acting Cylinder BSED125X100S Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED125X100S |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø125 mm |
| Stroke | 100 mm |
| Static holding force | 8600 N |
| Cylinder port | PT1/2 |
| Lock-release port | G1/8 |
| Configuration | Double rod, double acting |
|---|---|
| Operating pressure | 0.15 – 0.7 MPa |
| Unlocking pressure | 0.15 – 0.7 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Max stroke | Up to 1000 mm |
Specifications follow the official AirTAC BSED datasheet. Rod thread M27×2 both ends. Mounting (BSED): Basic, LB, FA, TC. Port options: PT (standard) / G (BSPP); lock-release port is G1/8.
Theoretical Output Force (Ø125mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 5734 N |
| 0.7 MPa (max) | 8027 N |
| Max drive (@0.7 MPa) | 819 kgf |
A rod exits both ends, so force is equal on extend and retract. Drive force is separate from the 8600 N static lock holding force. Size with a safety margin.
Model Code: Airtac BSED Clamping Double Acting Cylinder BSED125X100S
| B | Rod-lock cylinder prefix. |
|---|---|
| SED | ISO 15552 double-rod double-acting body. |
| 125 | Bore size in mm. |
| ×100 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSE / DMSE sensor sensing. |
Thread: PT (blank) / G. Mounting (BSED): Basic, LB, FA, TC. Related: SED (double rod, no lock), BSE (single-rod rod lock). Sensors CMSE/DMSE fit magnetic BSED.
Where the Airtac BSED Clamping Double Acting Cylinder BSED125X100S Is Used
Heavy Vertical Lifts
Holds massive 8600 N vertical loads securely in place during power loss or E-stop events, preventing catastrophic drops.
Press Tooling Ejection
Uses the equal 8028 N both-way force to extend and retract heavy stamping dies, locking exactly at the ejection end.
Overhead Crane Stops
Secures large suspended assemblies on the rear rod end while the front rod actuates positioning mechanisms.
Is the Airtac BSED Clamping Double Acting Cylinder BSED125X100S the Right Cylinder?
Choose this 125 mm bore when you need both-way symmetric force and heavy fail-safe holding. Verify your load does not exceed the 8600 N static hold. If you need less force, the 100 mm bore offers 3681 N at 0.5 MPa and a 5500 N hold; if you need more, step up to the 125 mm (the largest size) for its 8028 N drive force. For overhead or man-rated safety, always use safety-rated controls, as the lock is a static hold, not a dynamic brake. At 100 mm stroke, side-load is minimal, but always guide the load. Replacement parts must match the bore, stroke, PT1/2 port, and -S magnet.
Quick checklist
- ✓ Need both symmetric force AND fail-safe hold?
- ✓ Load to hold ≤ 8600 N?
- ✓ Back-rod space for tooling/flag
- ✓ Lock engaged only when stopped
- ✓ G1/8 release-air line available
Installation & Safety Notes
- check Engage the lock only after the rod has stopped — not a dynamic brake.
- check Release only when both piston sides are pressure-balanced.
- check Allow ≥0.5 s for full release before commanding motion.
- check Feed the G1/8 release port with 0.15–0.7 MPa clean air.
- check Support both rod ends; avoid side load.
- check Use BSED mounting (Basic/LB/FA/TC).
Airtac BSED Clamping Double Acting Cylinder BSED125X100S FAQ
The spring-applied collet immediately clamps the rod, providing a bidirectional static holding force of 8600 N with no live air. It is a fail-safe holding lock, not a dynamic brake, so it must engage only after the rod stops.
The double-rod design provides equal drive force both ways: 5734 N at 0.5 MPa and 8028 N at 0.7 MPa (max 819 kgf). The integrated rod lock provides a separate 8600 N static holding force.
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