Airtac BSED Clamping Double Acting Cylinder BSED125X1000S
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED125X1000S 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, 1000mm stroke, PT1/2 ports, G1/8 lock-release.
- BoreØ125 mm
- Stroke1000 mm
- Static holding force8600 N
- ConfigurationDouble rod + lock
- Cylinder portPT1/2
- Lock-release portG1/8
About the Airtac BSED Clamping Double Acting Cylinder BSED125X1000S
The AirTAC BSED125X1000S is a double-acting, double-rod ISO 15552 profile cylinder equipped with an integrated spring-applied, air-released rod lock. A Ø32 mm rod exits both ends, delivering equal force in both directions—about 5734 N each way at 0.5 MPa and 8028 N at 0.7 MPa. The rear rod provides an excellent mounting point for tooling, cams, or flags while actively resisting rotational twist.
This fail-safe collet lock clamps the rod bidirectionally with a static holding force of 8600 N whenever air pressure is lost or an E-stop is engaged. It is a static holding lock, not a dynamic brake; engage it only after the rod stops and release it only when both piston sides are pressure-balanced, allowing at least 0.5 seconds. The cylinder operates at 0.15-0.7 MPa, features a separate G1/8 release port, and includes a -S magnet for CMSE or 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 BSED125X1000S 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 BSED125X1000S Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED125X1000S |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø125 mm |
| Stroke | 1000 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 BSED125X1000S
| B | Rod-lock cylinder prefix. |
|---|---|
| SED | ISO 15552 double-rod double-acting body. |
| 125 | Bore size in mm. |
| ×1000 | 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 BSED125X1000S Is Used
Heavy Vertical Lifts
Holds massive vertical platens securely in place during air loss with 8600 N of static holding force, while the double-rod design provides 8028 N of equal lifting and lowering force.
Multi-Station Machining
Uses the rear rod for cam-actuated sequencing while the front rod drives the workpiece, maintaining identical push and pull thrust of 5734 N at 0.5 MPa across a 1000 mm traverse.
Pallet Stop Gates
Locks heavy pallets in place precisely at 1000 mm extensions without relying on live air, utilizing the bidirectional collet to prevent drift on the production line.
Is the Airtac BSED Clamping Double Acting Cylinder BSED125X1000S the Right Cylinder?
Select this 125 mm bore when your application requires both-way symmetric drive force up to 819 kgf and a robust 8600 N static hold. If your load requires less force, stepping down to the 100 mm bore provides 3681 N at 0.5 MPa and a 5500 N holding force. As the largest standard bore, there is no larger option; if 8600 N is insufficient, you must redesign the mechanical advantage or add external braking. With a 1000 mm stroke, you must use external guide rails to prevent side-load sagging and protect the internal seals.
To replace or order this unit, verify the 1000 mm stroke, PT1/2 cylinder port, and preferred mounting style (Basic, LB, FA, or TC). The -S suffix ensures the magnetic piston is included for DMSE electronic or CMSE reed position sensing. Always confirm the load is stopped before engaging the lock and that pressure is balanced before releasing it.
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 BSED125X1000S FAQ
The drive force is equal in both directions: 5734 N at 0.5 MPa and 8028 N at 0.7 MPa (max 819 kgf). The integrated fail-safe rod lock provides a separate bidirectional static holding force of 8600 N with no live air.
The lock is spring-applied and air-released via a separate G1/8 port. You must engage the lock only after the rod completely stops, and release it only when both piston sides are pressure-balanced, allowing at least 0.5 seconds for the collet to open.
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