Airtac BSED Clamping Double Acting Cylinder BSED125X200S
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED125X200S 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, 200mm stroke, PT1/2 ports, G1/8 lock-release.
- BoreØ125 mm
- Stroke200 mm
- Static holding force8600 N
- ConfigurationDouble rod + lock
- Cylinder portPT1/2
- Lock-release portG1/8
About the Airtac BSED Clamping Double Acting Cylinder BSED125X200S
The AirTAC BSED125X200S is a double-acting double-rod ISO 15552 profile cylinder with an integrated spring-applied, air-released rod lock. A rod exits both ends, delivering equal drive force of 5734 N each way at 0.5 MPa and 8028 N at 0.7 MPa. The integrated collet lock provides a bidirectional static holding force of 8600 N with no live air required.
This fail-safe lock engages automatically if air pressure drops, securely holding the load in place. It is a static holding device, not a dynamic brake, so engage it only after the rod stops and release it only when both piston sides are pressure-balanced. 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 BSED125X200S 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 BSED125X200S Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED125X200S |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø125 mm |
| Stroke | 200 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 BSED125X200S
| B | Rod-lock cylinder prefix. |
|---|---|
| SED | ISO 15552 double-rod double-acting body. |
| 125 | Bore size in mm. |
| ×200 | 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 BSED125X200S Is Used
Heavy Machining Jigs
Clamps heavy cast iron engine blocks during CNC milling. The 8600N fail-safe lock prevents the 8028N both-way drive from shifting if compressed air drops.
Vertical Pallet Lifts
Raises and lowers loaded pallets with equal push and pull force. The spring-applied collet locks the 32mm rod instantly on E-stop to prevent falling loads.
Heavy Conveyor Stops
Halts large automotive transfer pallets. The double-rod design mounts rear flags for position sensing while the lock holds 819 kgf against momentum.
Is the Airtac BSED Clamping Double Acting Cylinder BSED125X200S the Right Cylinder?
Select this 125mm bore model when your application requires symmetric both-way force and a robust fail-safe hold up to 8600 N. If your load is lighter, the 100mm bore version offers 3681 N at 0.5 MPa and a 5500 N holding force. If you need maximum push and pull capacity, this 125mm bore provides 8028 N at 0.7 MPa and 819 kgf max drive. Always verify your load is under the 8600 N holding limit.
For safe operation, allow at least 0.5 seconds for the lock to release after balancing piston pressures. The cylinder port is PT1/2, the lock-release port is G1/8, and the operating pressure is capped at 0.7 MPa. When ordering a replacement, match the 200mm stroke, PT thread, and -S magnet option.
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 BSED125X200S FAQ
If air is lost or an E-stop trips, the spring-applied collet clamps the 32mm rod, providing a bidirectional static holding force of 8600 N with no live air. It is a static lock, not a dynamic brake, so engage it only after the rod stops.
The drive force is equal both ways: 5734 N at 0.5 MPa and 8028 N at 0.7 MPa, with a max drive of 819 kgf. The static holding force of the rod lock is 8600 N. Operating pressure is 0.15-0.7 MPa.
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