Airtac BSED Clamping Double Acting Cylinder BSED40X25
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED40X25 combines a double-rod ISO 15552 cylinder — a Ø16mm rod out BOTH ends for equal force both directions — with an integrated spring-applied, air-released ROD LOCK that holds up to 900 N in either direction if air is lost. Ø40mm bore, 25mm stroke, PT1/4 ports, G1/8 lock-release.
- BoreØ40 mm
- Stroke25 mm
- Static holding force900 N
- ConfigurationDouble rod + lock
- Cylinder portPT1/4
- Lock-release portG1/8
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac BSED Clamping Double Acting Cylinder BSED40X25
The AirTAC BSED40X25 is a double-acting, double-rod ISO 15552 profile cylinder featuring an integrated spring-applied, air-released rod lock. Because the annulus area is identical on both sides, it generates an equal drive force of 528 N each way at 0.5 MPa. A rod exits both ends, allowing you to mount rear-rod tooling or flags while resisting rotational torque.
The fail-safe collet lock provides a 900 N static holding force without requiring live air. If pressure drops or an E-stop trips, the rod is securely clamped at position. This unit uses a PT1/4 cylinder port alongside a dedicated G1/8 release port, and operates within a 0.15-0.7 MPa pressure ceiling.
Double Rod + 900 N Rod Lock (Ø40mm)
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 BSED40X25 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 BSED40X25 Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED40X25 |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 25 mm |
| Static holding force | 900 N |
| Cylinder port | PT1/4 |
| 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 – 800 mm/s |
| Max stroke | Up to 800 mm |
Specifications follow the official AirTAC BSED datasheet. Rod thread M12×1.25 both ends. Mounting (BSED): Basic, LB, FA, TC. Port options: PT (standard) / G (BSPP); lock-release port is G1/8.
Theoretical Output Force (Ø40mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 528 N |
| 0.7 MPa (max) | 739 N |
| Max drive (@0.7 MPa) | 75 kgf |
A rod exits both ends, so force is equal on extend and retract. Drive force is separate from the 900 N static lock holding force. Size with a safety margin.
Model Code: Airtac BSED Clamping Double Acting Cylinder BSED40X25
| B | Rod-lock cylinder prefix. |
|---|---|
| SED | ISO 15552 double-rod double-acting body. |
| 40 | Bore size in mm. |
| ×25 | 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 BSED40X25 Is Used
Vertical Lift Stops
Lifts a 50 kg platen using 528 N of symmetric thrust, relying on the 900 N spring-applied collet to hold the load securely during air loss.
Dual-Tool Transfer
Uses the double-rod design to mount a grip on one end and a cam flag on the other, ensuring equal speed and force in both directions.
Clamp Position Hold
Extends a clamp on a 25 mm stroke and engages the fail-safe lock to maintain 900 N of holding resistance without consuming continuous air.
Is the Airtac BSED Clamping Double Acting Cylinder BSED40X25 the Right Cylinder?
Select this 40 mm bore when an application demands both symmetric thrust and mid-stroke holding. Verify your load requires 900 N or less of static holding force. If you need less drive force, the 32 mm bore offers 345 N at 0.5 MPa and a 600 N hold; stepping up to the 50 mm bore provides 825 N at 0.5 MPa and a 1400 N hold.
This SKU lacks a magnet, so position sensing is not available. To replace safely, match the 25 mm stroke, PT1/4 port, and mounting choice (Basic, LB, FA, or TC). Remember: the lock is 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 for the collet to clear.
Quick checklist
- ✓ Need both symmetric force AND fail-safe hold?
- ✓ Load to hold ≤ 900 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 BSED40X25 FAQ
The double-rod design yields an equal drive force of 528 N at 0.5 MPa and 739 N at 0.7 MPa (max 75 kgf) in both directions. The integrated fail-safe rod lock provides a separate static holding force of 900 N.
The spring-applied, air-released collet engages automatically upon air loss, clamping the 16 mm rod with 900 N of holding force. To release it safely after pressure is restored, balance pressure on both piston sides and wait at least 0.5 seconds before cycling.
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