Airtac BSED Clamping Double Acting Cylinder BSED125X150S
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED125X150S 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, 150mm stroke, PT1/2 ports, G1/8 lock-release.
- BoreØ125 mm
- Stroke150 mm
- Static holding force8600 N
- ConfigurationDouble rod + lock
- Cylinder portPT1/2
- Lock-release portG1/8
About the Airtac BSED Clamping Double Acting Cylinder BSED125X150S
The AirTAC BSED125X150S 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 in both directions—about 5734 N each way at 0.5 MPa. This symmetric thrust is ideal for carrying tooling or a flag on the rear rod while resisting rotation.
The fail-safe collet lock delivers an 8600 N static holding force with no live air, securing the load instantly if pressure drops. It is a holding lock, not a dynamic brake; engage it only after the rod stops, release it only when piston sides are pressure-balanced, and allow at least 0.5 seconds for the transition. The unit features a separate G1/8 release port, a 40 mm cushion length, and an operating pressure ceiling of 0.7 MPa.
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 BSED125X150S 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 BSED125X150S Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED125X150S |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø125 mm |
| Stroke | 150 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 BSED125X150S
| B | Rod-lock cylinder prefix. |
|---|---|
| SED | ISO 15552 double-rod double-acting body. |
| 125 | Bore size in mm. |
| ×150 | 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 BSED125X150S Is Used
Heavy Press Ejection
Symmetric 8028 N both-way drive pushes and retracts heavy stamping dies, while the 8600 N lock holds the ejector position securely during press cycling.
Overhead Lift Holding
Raises and lowers substantial vertical loads with equal both-way force; the fail-safe collet locks the rod instantly if air pressure is lost mid-cycle.
Indexing Conveyor Stop
Uses the rear rod for a cam flag to track position, while the front rod halts heavy pallets; the spring-applied lock maintains the stop position without live air.
Is the Airtac BSED Clamping Double Acting Cylinder BSED125X150S the Right Cylinder?
Select this 125 mm bore when your application demands symmetric both-way force and a robust fail-safe hold. Verify your static load is 8600 N or less. If your load exceeds 8600 N, step up to a larger custom solution; if you need less force, the 100 mm bore offers 3681 N at 0.5 MPa with a 5500 N holding force. Always engage the lock only after motion stops, and release it only when both piston sides are pressure-balanced.
This 150 mm stroke model includes the -S magnet for CMSE (reed) and DMSE (electronic) sensors. The cylinder uses a PT1/2 port, an M27x2 rod thread, and supports Basic, LB, FA, and TC mountings. For any stroke of 300 mm or longer, add an external guide to prevent side-load wear.
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 BSED125X150S FAQ
The equal both-way drive force is 5734 N at 0.5 MPa and 8028 N at 0.7 MPa (max 819 kgf). The static fail-safe holding force of the integrated rod lock is 8600 N.
Engage the spring-applied collet only after the rod completely stops moving. To release, ensure both piston sides are pressure-balanced and allow at least 0.5 seconds before moving the rod.
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