Airtac BSED Clamping Double Acting Cylinder BSED50X900S
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED50X900S 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, 900mm stroke, PT1/4 ports, G1/8 lock-release.
- BoreØ50 mm
- Stroke900 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 BSED50X900S
The AirTAC BSED50X900S is a double-acting, double-rod ISO 15552 profile cylinder featuring an integrated spring-applied, air-released rod lock. A rod exits both ends, providing equal drive force of 825 N each way at 0.5 MPa and 1154 N at 0.7 MPa. The fail-safe collet mechanism delivers a 1400 N static holding force, locking the rod securely in place whenever air pressure is removed.
This model includes a magnetic piston for position sensing and uses an extruded aluminum barrel without external tie rods. It features adjustable air cushions at both ends and a separate G1/8 lock-release port. The lock is a static holding device, not a dynamic brake, so it must be engaged only after the rod stops moving.
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 BSED50X900S 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 BSED50X900S Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED50X900S |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø50 mm |
| Stroke | 900 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 BSED50X900S
| B | Rod-lock cylinder prefix. |
|---|---|
| SED | ISO 15552 double-rod double-acting body. |
| 50 | Bore size in mm. |
| ×900 | 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 BSED50X900S Is Used
Overhead Z-Axis Lifts
Holds a 1400 N vertical load safely on an overhead gantry when air drops, while delivering 1154 N both ways to raise and lower tooling.
Pallet Stopper Arms
Uses the rear rod end to mount a cam flag for sensor feedback, stopping heavy pallets with equal push-pull force and a fail-safe hold.
Machining Clamps
Secures parts symmetrically from both sides during machining, engaging the 1400 N collet lock to prevent movement during sudden E-stops.
Is the Airtac BSED Clamping Double Acting Cylinder BSED50X900S the Right Cylinder?
Select this 50 mm bore when you need symmetric 1154 N drive force and up to 1400 N of static holding. If your load requires less force, the 40 mm bore offers 528 N at 0.5 MPa and a 900 N hold; for heavier demands, the 63 mm bore provides 1402 N at 0.5 MPa and a 2200 N hold. Always verify your load stays within the 1400 N holding limit.
For this 900 mm stroke, use external guides to prevent side loads from damaging the seals. To release the lock safely, balance pressure on both piston sides and apply air to the G1/8 release port for at least 0.5 seconds. This configuration uses PT1/4 cylinder ports, a Ø20 mm rod, and an -S magnet for CMSE or DMSE sensors.
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 BSED50X900S FAQ
The drive force is equal both ways at 825 N @0.5 MPa and 1154 N @0.7 MPa, with a max drive of 118 kgf. The integrated spring-applied rod lock provides a 1400 N static holding force with no live air.
The lock is a static holding device, not a dynamic brake. Engage it only after the rod stops moving. To release, balance pressure on both piston sides and apply air to the G1/8 release port, allowing at least 0.5 seconds before moving.
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