Airtac BSED Clamping Double Acting Cylinder BSED40X800
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED40X800 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, 800mm stroke, PT1/4 ports, G1/8 lock-release.
- BoreØ40 mm
- Stroke800 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 BSED40X800
The AirTAC BSED40X800 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 drive force of 528 N each way at 0.5 MPa, while the collet lock provides a 900 N static holding force with no live air required.
This unit uses a 16 mm rod with an M12x1.25 end thread, a 30 mm cushion length, and a PT1/4 cylinder port. A separate G1/8 release port controls the lock, which must only engage after the rod stops and release when piston sides are pressure-balanced, allowing at least 0.5 s. This SKU lacks a magnet, so position sensing is not supported.
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 BSED40X800 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 BSED40X800 Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED40X800 |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 800 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 BSED40X800
| B | Rod-lock cylinder prefix. |
|---|---|
| SED | ISO 15552 double-rod double-acting body. |
| 40 | Bore size in mm. |
| ×800 | 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 BSED40X800 Is Used
Vertical Lift Stations
Holds a 900 N vertical load safely in place during air loss or E-stop, while the 528 N both-way drive cycles the lift platform smoothly.
Mid-Stroke Machining
Clamps the rod at an exact 800 mm extended position for a machining operation, utilizing the equal both-way force for tool actuation.
Pallet Stops
Provides a 900 N fail-safe stop for pallets on a conveyor, with the double-rod design allowing a flag cam to mount on the rear rod.
Is the Airtac BSED Clamping Double Acting Cylinder BSED40X800 the Right Cylinder?
Select this 40 mm bore model when an application requires 739 N of equal both-way force at 0.7 MPa and a fail-safe holding capacity up to 900 N. If your load exceeds 900 N, step up to the 50 mm bore, which provides 1154 N drive force at 0.7 MPa and 1400 N holding force. If you need less force, step down to the 32 mm bore, offering 483 N drive force at 0.7 MPa and 600 N holding force.
Ensure your load stays within the 900 N holding limit when air is lost. Because the 800 mm stroke is long, verify side-load limits and use external guide rails to prevent rod binding. For replacements, match the 40 mm bore, 800 mm stroke, PT1/4 port, and Basic/LB/FA/TC mounting choice.
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 BSED40X800 FAQ
The spring-applied collet immediately clamps the rod, providing a 900 N bidirectional static holding force with no live air. It is a fail-safe lock, not a dynamic brake, so engage it only after the rod stops. For overhead or man-rated loads, use separate safety-rated controls.
The double-rod drive force is equal both ways: 528 N at 0.5 MPa and 739 N at 0.7 MPa, with a maximum drive of 75 kgf. The static holding force of the integrated lock is 900 N. Release the lock only when both piston sides are pressure-balanced, allowing at least 0.5 s.
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1-Year Warranty
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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