Airtac BSE Clamp Standard Cylinder BSE40X350S
The AirTAC Airtac BSE Clamp Standard Cylinder BSE40X350S is a genuine double-acting ISO 15552 cylinder with an integrated spring-applied, air-released ROD LOCK. If air is cut or an E-stop is hit, the collet clamps the Ø16mm rod and holds up to 900 N in either direction — no drift. Ø40mm bore, 350mm stroke, PT1/4 cylinder ports, G1/8 lock-release port.
- BoreØ40 mm
- Stroke350 mm
- Static holding force900 N
- Lock typeSpring-lock / air-release
- 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 BSE Clamp Standard Cylinder BSE40X350S
The AirTAC BSE40X350S is a double-acting, single-rod ISO 15552 profile cylinder featuring an integrated spring-applied, air-released rod lock. A collet mechanism delivers a bidirectional static holding force of 900 N. If air pressure drops or an E-stop trips, the lock engages automatically to hold the rod securely in place.
Operating pressure is capped at 0.15-0.7 MPa, and the lock requires a separate G1/8 release port to unlock. The -S magnet option allows position sensing via CMSE reed or DMSE electronic sensors. With a 350 mm stroke, the extruded aluminum barrel provides an ISO 15552 mounting interface without external tie rods.
Rod Lock — 900 N Static Holding (Ø40mm)
A spring clamps the collet onto the rod, so the Airtac BSE Clamp Standard Cylinder BSE40X350S holds its position in both directions when air is lost, exhausted or an E-stop trips. Apply 0.15–0.7 MPa to the G1/8 release port to unlock. Engage the lock only after the rod has stopped (it is not a dynamic brake), and release only when the pressures on both sides of the piston are balanced. Allow at least 0.5 s for full release before moving.
Airtac BSE Clamp Standard Cylinder BSE40X350S Technical Specifications
| Model | Airtac BSE Clamp Standard Cylinder BSE40X350S |
|---|---|
| Series | BSE ISO 15552 rod-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 350 mm |
| Static holding force | 900 N |
| Cylinder port | PT1/4 |
| Lock-release port | G1/8 |
| Rod thread | M12×1.25 |
|---|---|
| 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 |
| Cushion | Adjustable, 30 mm |
| Max stroke | Up to 800 mm |
Specifications follow the official AirTAC BSE datasheet. The lock uses the SE standard body; SE mounting accessories fit BSE except FTC. Port options: PT (standard) / G (BSPP); lock-release port is G1/8.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa (max) | 880 N | — |
| Max drive (@0.7 MPa) | 90 kgf | |
Drive force is separate from the 900 N static holding force of the lock. BSE operates up to 0.7 MPa. Size with a safety margin.
Model Code: Airtac BSE Clamp Standard Cylinder BSE40X350S
| B | Rod-lock cylinder prefix. |
|---|---|
| SE | ISO 15552 standard double-acting body. |
| 40 | Bore size in mm. |
| ×350 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSE / DMSE sensor sensing. |
Thread: PT (blank) / G. Mounting (BSE): Basic, LB, FA, FB, CA, CB, CR, TC (FTC is not available on BSE). Related: SE (no lock), BSED (double-rod rod lock). Sensors CMSE/DMSE fit magnetic BSE.
Where the Airtac BSE Clamp Standard Cylinder BSE40X350S Is Used
Vertical Pneumatic Lifts
Secure vertical lifting platforms holding 50 kg workpieces. The 900 N collet lock prevents back-driving on air loss, keeping the platform safely elevated without live air.
Pallet Transfer Stops
Control heavy pallet flow on packaging lines. The 879 N drive force extends the stop gate, while the fail-safe lock holds the rod rigid against impacting loads during E-stop.
Z-Axis Tool Clamping
Hold machining heads in the down position. The spring-applied collet ensures the tool stays clamped if compressed air is exhausted, preventing accidental drops.
Is the Airtac BSE Clamp Standard Cylinder BSE40X350S the Right Cylinder?
Verify your suspended load stays under the 900 N static holding force. If you need less holding capacity, the 32 mm bore offers a 402 N push at 0.5 MPa and 600 N hold. For heavier demands, the 63 mm bore provides 1559 N push at 0.5 MPa and 2200 N hold. The lock is a fail-safe hold, not a dynamic brake; engage it only after the rod fully stops, and release it only when piston pressures are balanced, allowing at least 0.5 s for full release.
At 350 mm, this stroke demands careful attention to side loads. Use a dedicated guide rail to prevent binding and cylinder damage. To match this exact replacement, confirm the 40 mm bore, 350 mm stroke, PT1/4 cylinder port, and -S magnet option. Note that all SE mounting accessories fit the BSE body, except FTC.
Quick checklist
- ✓ Load to hold ≤ 900 N?
- ✓ Fail-safe hold on air loss / E-stop needed
- ✓ Lock engaged only when stopped
- ✓ G1/8 release-air line available
- ✓ Magnet (-S) for CMSE/DMSE sensors?
Installation & Safety Notes
- check Engage the lock only after the rod has stopped — not as 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 Add safety-rated controls for man-rated / overhead loads.
- check Use SE mounting accessories (FTC excepted).
Airtac BSE Clamp Standard Cylinder BSE40X350S FAQ
The drive force is 628 N push and 528 N pull at 0.5 MPa, and 879 N push at 0.7 MPa (max 90 kgf). The separate static holding force of the spring-applied rod lock is 900 N.
The lock is spring-applied, so a loss of air instantly clamps the rod with 900 N of bidirectional force. To release, supply air to the separate G1/8 port at 0.15-0.7 MPa, but only after balancing piston pressures and waiting at least 0.5 s before moving.
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