Airtac BSED Clamping Double Acting Cylinder BSED50X25S
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED50X25S 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 BSED50X25S
The AirTAC BSED50X25S 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 force and speed in both directions—yielding 825 N each way at 0.5 MPa. The rear rod is ideal for mounting flags, cams, or secondary tooling while resisting rotation.
This fail-safe collet lock provides a 1400 N static holding force without requiring live air. If pressure drops or an E-stop trips, the rod is securely clamped. It uses a dedicated G1/8 release port, and the -S suffix indicates a magnetic piston ready for CMSE or DMSE position sensing.
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 BSED50X25S 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 BSED50X25S Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED50X25S |
|---|---|
| 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 BSED50X25S
| 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 BSED50X25S Is Used
Vertical Lift Stops
Holds a 1400 N vertical load securely during air loss, while the 825 N both-way drive smoothly raises and lowers the platform.
Dual-End Tooling
Uses the rear rod for a cam flag to confirm position externally, leveraging equal 1154 N force for precise machining passes.
Pallet Indexing
Locks the 50 mm rod instantly when E-stops activate on the line, preventing pallet drift while sensors detect the halt.
Is the Airtac BSED Clamping Double Acting Cylinder BSED50X25S the Right Cylinder?
Select this 50 mm bore model when your application demands symmetric thrust alongside a reliable 1400 N static hold. If your load requires less force, the 40 mm bore delivers 528 N at 0.5 MPa and 900 N holding; if you need more, step up to the 63 mm bore for 1402 N at 0.5 MPa and 2200 N holding. Always verify your load is under 1400 N and engage the lock only after the rod fully stops.
For replacements, match the 50 mm bore, 25 mm stroke, PT1/4 cylinder port, and M16x1.5 rod thread. Because the stroke is 25 mm, side-load risks are minimal, but ensure proper alignment to prevent binding. Release the lock only when both piston sides are pressure-balanced, allowing at least 0.5 seconds for the collet to disengage.
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 BSED50X25S FAQ
The double-rod design provides equal drive force in both directions: 825 N at 0.5 MPa and 1154 N at 0.7 MPa (max 118 kgf). The integrated fail-safe rod lock provides a separate static holding force of 1400 N with no live air required.
The lock is spring-applied and air-released via a dedicated G1/8 port. To release safely, ensure both piston sides are pressure-balanced, then apply 0.15-0.7 MPa to the release port and wait at least 0.5 seconds before commanding motion. Never use it as a dynamic brake.
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 BSED50X25S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.