Airtac BSED Clamping Double Acting Cylinder BSED125X200
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED125X200 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 BSED125X200
The AirTAC BSED125X200 is a double-acting, double-rod ISO 15552 profile cylinder featuring 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 collet lock provides a bidirectional static holding force of 8600 N with no live air required.
This 125 mm bore unit uses a PT1/2 cylinder port and a separate G1/8 lock-release port. It features a 32 mm rod, an M27x2 rod-end thread, and 40 mm adjustable air cushions at both ends. This SKU has no magnet, so CMSE or DMSE position sensors cannot be used.
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 BSED125X200 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 BSED125X200 Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED125X200 |
|---|---|
| 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 BSED125X200
| 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 BSED125X200 Is Used
Heavy Machining Clamps
Secures large metal castings during CNC machining. The 8600 N fail-safe lock holds the heavy workpiece if air pressure drops, while the 8028 N equal both-way drive ensures rigid, balanced clamping and release.
Pallet Stopper Arms
Halts heavy inbound pallets on a conveyor line. The double-rod design allows a rear flag cam to trigger arrival sensors, and the spring-applied collet locks the 125 mm rod instantly during an E-stop.
Vertical Lift Platforms
Raises and lowers heavy material trays with equal force in both directions. The 8600 N static holding force prevents gravitational drift when the system is idle, though safety-rated controls are recommended for man-rated overhead loads.
Is the Airtac BSED Clamping Double Acting Cylinder BSED125X200 the Right Cylinder?
Select this model when an application demands symmetric both-way force and a robust fail-safe hold up to 8600 N. If your load requires less holding or drive force, stepping down to the 100 mm bore yields 3681 N at 0.5 MPa and a 5500 N static hold. If you need more force, this 125 mm bore is the largest available, delivering a maximum drive of 819 kgf at 0.7 MPa. Always engage the lock only after the rod stops completely, and release it only when both piston sides are pressure-balanced, allowing at least 0.5 seconds. For exact replacement matching, verify the 200 mm stroke, PT1/2 port, and Basic/LB/FA/TC mounting choice.
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 BSED125X200 FAQ
The double-rod drive force is equal both ways: 5734 N at 0.5 MPa and 8028 N at 0.7 MPa, with a maximum drive of 819 kgf. The integrated fail-safe rod lock provides a separate bidirectional static holding force of 8600 N with no live air.
The spring-applied collet clamps the rod automatically if air is lost or an E-stop trips, holding the load up to 8600 N. To release the lock safely, bring the cylinder to a complete stop, pressure-balance both piston sides, and apply air to the G1/8 release port for at least 0.5 seconds.
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