Airtac BSED Clamping Double Acting Cylinder BSED50X25
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED50X25 combines a double-rod ISO 15552 cylinder — a Ø20mm rod out BOTH ends for equal force both directions — with an integrated spring-applied, air-released ROD LOCK that holds up to 1400 N in either direction if air is lost. Ø50mm bore, 25mm stroke, PT1/4 ports, G1/8 lock-release.
- BoreØ50 mm
- Stroke25 mm
- Static holding force1400 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 BSED50X25
The AirTAC BSED50X25 is a double-acting, double-rod ISO 15552 profile cylinder featuring an integrated spring-applied, air-released rod lock. Because a rod exits both ends, it delivers equal thrust and speed in both directions—generating 825 N each way at 0.5 MPa. The extruded aluminum barrel provides a clean, tie-rod-free ISO 15552 mounting interface.
The fail-safe collet mechanism provides a bidirectional static holding force of 1400 N with zero live air required. This lock engages only after the rod stops and releases via a separate G1/8 port when piston sides are pressure-balanced. Note that this specific SKU lacks a magnet, so it will not support CMSE or DMSE position sensors.
Double Rod + 1400 N Rod Lock (Ø50mm)
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 BSED50X25 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 BSED50X25 Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED50X25 |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø50 mm |
| Stroke | 25 mm |
| Static holding force | 1400 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 1000 mm |
Specifications follow the official AirTAC BSED datasheet. Rod thread M16×1.5 both ends. Mounting (BSED): Basic, LB, FA, TC. Port options: PT (standard) / G (BSPP); lock-release port is G1/8.
Theoretical Output Force (Ø50mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 825 N |
| 0.7 MPa (max) | 1155 N |
| Max drive (@0.7 MPa) | 118 kgf |
A rod exits both ends, so force is equal on extend and retract. Drive force is separate from the 1400 N static lock holding force. Size with a safety margin.
Model Code: Airtac BSED Clamping Double Acting Cylinder BSED50X25
| B | Rod-lock cylinder prefix. |
|---|---|
| SED | ISO 15552 double-rod double-acting body. |
| 50 | 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 BSED50X25 Is Used
Vertical Lift Jaws
Holds a 1400 N vertical gripper load securely mid-stroke if compressed air drops, while the double rod provides 825 N of equal lifting and lowering force.
Mid-Transfer Stopper
Uses the rear exiting rod to mount a cam flag for timing, while the collet locks the 825 N stroke instantly during an E-stop on the line.
Symmetric Press Tool
Equal both-way drive force ensures consistent press pressure without drift, while the spring-applied lock prevents tool drop when air is vented.
Is the Airtac BSED Clamping Double Acting Cylinder BSED50X25 the Right Cylinder?
Select this 50mm bore when an application requires symmetric 825 N both-way force alongside a 1400 N fail-safe hold. If your load demands less holding power, step down to the 40mm bore (739 N drive force, 900 N hold). For heavier loads, step up to the 63mm bore (1962 N drive force, 2200 N hold). Always verify the load to be held is under 1400 N.
Adhere strictly to safety operating rules: engage the lock only after the rod stops, release only when both sides are pressure-balanced, and allow at least 0.5 s for the transition. Operating pressure is capped at 0.7 MPa. To replace this unit, match the 50mm bore, 25mm stroke, PT1/4 cylinder port, and your specific mounting choice (Basic, LB, FA, or TC).
Quick checklist
- ✓ Need both symmetric force AND fail-safe hold?
- ✓ Load to hold ≤ 1400 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 BSED50X25 FAQ
The spring-applied collet immediately engages and clamps the rod, providing a bidirectional static holding force of 1400 N to prevent unintended movement. The lock is not a dynamic brake, so it must only engage after the rod has stopped.
The double-rod design delivers equal force both ways: 825 N at 0.5 MPa and 1154 N at 0.7 MPa, with a maximum drive force of 118 kgf. The fail-safe rod lock provides a separate static holding force of 1400 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 BSED50X25
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.