Airtac BSED Clamping Double Acting Cylinder BSED50X400
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED50X400 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, 400mm stroke, PT1/4 ports, G1/8 lock-release.
- BoreØ50 mm
- Stroke400 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 BSED50X400
The AirTAC BSED50X400 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 rear rod is ideal for carrying tooling or flags and helps resist rotation.
The fail-safe collet lock delivers a 1400 N static holding force with no live air required. It engages only after the rod stops and releases via a separate G1/8 port when both piston sides are pressure-balanced, requiring at least 0.5 s. This SKU has no magnet, so it does 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 BSED50X400 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 BSED50X400 Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED50X400 |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø50 mm |
| Stroke | 400 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 BSED50X400
| B | Rod-lock cylinder prefix. |
|---|---|
| SED | ISO 15552 double-rod double-acting body. |
| 50 | Bore size in mm. |
| ×400 | 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 BSED50X400 Is Used
Vertical Lift Stages
Holds a 1400 N vertical load safely in place during air loss or E-stop, while the double-rod provides equal 1154 N lifting and lowering force.
Dual-End Tooling
Uses the rear rod for mounting a flag or secondary tool, benefiting from anti-rotation and equal both-way drive force for machining operations.
Pallet Stopper Arms
Applies 825 N at 0.5 MPa to halt pallets symmetrically, engaging the 1400 N spring collet lock to hold the load without continuous air.
Is the Airtac BSED Clamping Double Acting Cylinder BSED50X400 the Right Cylinder?
Choose this 50 mm bore when you need both symmetric force and fail-safe holding up to 1400 N. If your load requires less force, step down to the 40 mm bore (528 N @0.5 MPa, 900 N hold); if you need more, step up to the 63 mm bore (1402 N @0.5 MPa, 2200 N hold). Always verify your load is within the 1400 N holding limit.
With a 400 mm stroke, use a guide to prevent side-load damage to the seals and barrel. To match this replacement exactly, confirm the 50 mm bore, 400 mm stroke, PT1/4 cylinder port, and your 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 BSED50X400 FAQ
The spring-applied collet lock engages automatically, providing a 1400 N static holding force to keep the rod at its position. It is a fail-safe hold, not a dynamic brake, so it must engage only after the rod stops.
The double-rod drive force is equal both ways: 825 N at 0.5 MPa and 1154 N at 0.7 MPa (max 118 kgf). The integrated static holding force of the lock is 1400 N.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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