Airtac BSED Clamping Double Acting Cylinder BSED40X25S
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED40X25S 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 BSED40X25S
The AirTAC BSED40X25S 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 528 N each way at 0.5 MPa and 739 N at 0.7 MPa. The rear rod is ideal for mounting external tooling or flag actuators while resisting rotational twist.
The fail-safe collet lock provides a 900 N static holding force in both directions without requiring live air. It engages automatically upon air loss or E-stop activation to freeze the load. Remember to engage the lock only after the rod stops, and release it only when both piston sides are pressure-balanced, allowing at least 0.5 seconds for the transition.
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 BSED40X25S 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 BSED40X25S Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED40X25S |
|---|---|
| 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 BSED40X25S
| 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 BSED40X25S Is Used
Pneumatic Lift Stops
Holds a 900 N vertical lift stationary at the top of its 25 mm travel during an air loss event, preventing sudden drops while the double-rod ensures stable retraction.
Clamp Positioning
Applies 739 N of equal both-way clamping force in a machining fixture, locking the 16 mm rod securely to maintain 900 N of static resistance against part ejection.
Transfer Diverter
Uses the dual-rod design to mount a diverter flag on the rear while providing 528 N of symmetric actuation, freezing the mechanism instantly when E-stops are tripped.
Is the Airtac BSED Clamping Double Acting Cylinder BSED40X25S the Right Cylinder?
Select this 40 mm bore model when an application demands both symmetric pushing and pulling forces alongside a fail-safe hold of up to 900 N. If your load requires less force, the 32 mm bore offers 345 N at 0.5 MPa and a 600 N hold. For heavier loads, the 50 mm bore provides 825 N at 0.5 MPa and a 1400 N hold. Always verify your required holding force stays under the 900 N limit.
This unit includes a magnet for position sensing via CMSE reed or DMSE electronic sensors. The cylinder port is PT1/4, and the lock-release port is G1/8. Operating pressure is capped at 0.7 MPa. Because the 25 mm stroke is short, side-load risks are minimal, but always ensure the load is guided to prevent binding.
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 BSED40X25S FAQ
The integrated spring-applied collet engages instantly, providing a 900 N bidirectional static holding force to keep the rod at its position without live air. It is a holding lock, not a dynamic brake, so it must only engage after the rod stops moving.
The BSED40X25S delivers equal both-way drive forces of 528 N at 0.5 MPa and 739 N at 0.7 MPa, with a maximum drive of 75 kgf. The fail-safe rod lock provides a static holding force of 900 N.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC BSED Cylinders
Request a Quote for Airtac BSED Clamping Double Acting Cylinder BSED40X25S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.