Airtac BSED Clamping Double Acting Cylinder BSED40X50
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED40X50 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, 50mm stroke, PT1/4 ports, G1/8 lock-release.
- BoreØ40 mm
- Stroke50 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 BSED40X50
The AirTAC BSED40X50 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 thrust and speed in both directions—about 528 N each way at 0.5 MPa and 739 N at 0.7 MPa. The ISO 15552 extruded aluminum barrel ensures standard mounting interchangeability without external tie rods.
This unit delivers a bidirectional static holding force of 900 N with no live air required. The fail-safe collet engages automatically upon air loss or E-stop, clamping the 16 mm rod to maintain position. Control is managed via a separate G1/8 release port, and the cylinder features a 30 mm adjustable air cushion at both ends. Note that this specific SKU lacks a magnet (-S), meaning it does not support CMSE or DMSE position sensors.
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 BSED40X50 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 BSED40X50 Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED40X50 |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 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 BSED40X50
| B | Rod-lock cylinder prefix. |
|---|---|
| SED | ISO 15552 double-rod double-acting body. |
| 40 | Bore size in mm. |
| ×50 | 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 BSED40X50 Is Used
Overhead Z-Axis Pickers
Holds a 900 N vertical load securely mid-stroke if compressed air drops, preventing a 739 N both-way drive assembly from falling during an E-stop.
Pallet Stop Gates
Uses the equal both-way force to raise and lower a stop gate, while the fail-safe collet locks the 50 mm stroke position rigidly against impacting pallets.
Symmetric Clamping Jigs
Exploits the twin rear rod for anti-rotation and equal 528 N clamping at 0.5 MPa, locking the workpiece via the 900 N collet when machining stops.
Is the Airtac BSED Clamping Double Acting Cylinder BSED40X50 the Right Cylinder?
Select this 40 mm bore model when an application requires symmetric both-way force and fail-safe holding up to 900 N. If your load demands less force, the neighboring 32 mm bore provides 345 N at 0.5 MPa and a 600 N hold. If you need greater capacity, stepping up to the 50 mm bore yields 825 N at 0.5 MPa and a 1400 N hold. Always verify the actual load does not exceed the 900 N holding force, and engage the lock only after the rod completely stops.
To release the clamp safely, ensure both piston sides are pressure-balanced and allow at least 0.5 seconds before moving. Operating pressure is capped at 0.7 MPa. This BSED40X50 configuration uses a PT1/4 cylinder port, a standard 50 mm stroke, and Basic mounting. If your stroke is 300 mm or longer, add an external guide to prevent excessive side-load wear on the rod lock.
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 BSED40X50 FAQ
The integrated spring-applied collet instantly clamps the rod, providing a bidirectional static holding force of 900 N to keep the load in place. It is a fail-safe hold, not a dynamic brake, so it must only be engaged after the rod stops moving.
The double-rod drive force is equal in both directions: 528 N at 0.5 MPa and 739 N at 0.7 MPa (max 75 kgf). The fail-safe rod lock provides a separate 900 N static holding force. Release the lock via the G1/8 port only after balancing pressure on both piston sides.
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Standard models are processed and dispatched in 3-5 business days.
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