Airtac BSAID Clamp Cylinder BSAID40X50S
The AirTAC Airtac BSAID Clamp Cylinder BSAID40X50S is a genuine double-acting ISO 15552 cylinder with a Ø40mm bore, 50mm stroke and a spring-applied, air-released clamp-lock that holds the rod at ANY position along its travel — with a static holding force of 900 N.
- BoreØ40 mm
- Stroke50 mm
- Cylinder portG1/4
- TypeDouble rod (BSAID)
- Enclasp portG1/8
- Rod threadM12×1.25
- 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 BSAID Clamp Cylinder BSAID40X50S
The AirTAC BSAID40X50-S is a double-acting ISO 15552 profile cylinder featuring a double-rod configuration and a spring-applied, air-released clamp-lock. It provides a static holding force of 900 N and locks the piston rod at any position along its 50 mm stroke. Because it is a double-rod unit, the thrust is equal in both directions at 528 N (0.5 MPa), and the extending rod from both ends allows you to mount a workpiece on one side and a guide or position flag on the other.
It is vital to distinguish holding force from thrust: the 900 N clamp capacity secures the static load, while the 528 N thrust dictates the cylinder's driving power. The lock engages only after the rod stops and requires a third G1/8 enclasp port to release the grip. Furthermore, the variable air cushion only decelerates the piston near stroke ends; it does not hold the load.
Airtac BSAID Clamp Cylinder BSAID40X50S Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID40X50S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 mm |
| Type | Double rod (BSAID), double acting |
| Cylinder port | G1/4 |
| Rod thread | M12×1.25 |
| Lock type | Spring-applied, air-released clamp (any position) |
|---|---|
| Static holding force | 900 N |
| Enclasp / unlock port | G1/8 |
| Operating pressure | 0.15 – 0.7 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Max stroke | Up to 800 mm |
Specifications follow the official AirTAC BSAI datasheet (ISO 15552). Operating pressure is 0.15–0.7 MPa (lower than a plain SAI). Port options: PT / G.
How the Clamp-Lock Holds
static holding force (Ø40 mm)
A spring-applied gripper clamps the rod and holds the load at any position in the stroke — not just at the stroke end (that is a SAIL) — and it is bidirectional: it holds whether the rod was extending or retracting.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa (max) | 880 N | — |
Equal force both directions (double rod). Rated to the 0.7 MPa operating maximum for this series. The clamp holding force (900 N) is separate from cylinder thrust. Size with a margin.
Where the Airtac BSAID Clamp Cylinder BSAID40X50S Is Used
Vertical Axis Holding
Maintains a 900 N static hold on a vertical load at any intermediate stroke position, preventing gravity drops during air pressure loss.
Machining Position Lock
Secures a dual-sided workpiece fixture rigidly in place for machining or inspection, using the second rod end for a position flag.
Power Failure Safety
The spring-applied clamp engages instantly upon loss of system air, safely freezing the double-rod position mid-stroke.
Is the Airtac BSAID Clamp Cylinder BSAID40X50S the Right Clamp-Lock?
Choose this double-rod model when you need symmetrical force and dual-side guidance. If your application only requires unidirectional thrust, the single-rod BSAI40X50 offers a higher push thrust of 628 N. If you need a stronger hold, stepping up to the 50 mm bore provides a 1400 N holding force and 825 N pull thrust.
The clamp locks the rod securely at any position but cannot brake a moving load. Always ensure air pressures are balanced before unlocking to prevent abrupt rod jumps, and add independent safety measures for human-safety-critical holds. This PT-ported unit includes a -S magnet for CMSE reed or DMSE electronic sensors. It supports Basic, FA, LB, TC, TCM1, and TCM2 mountings, and the M12x1.25 rod thread handles side loads well.
Quick checklist
- ✓ Hold needed at any position?
- ✓ Or stroke-end only → use SAIL
- ✓ Holding force ≥ your load
- ✓ Balanced-pressure unlock circuit
- ✓ Extra safety measure for people
Airtac BSAID Clamp Cylinder BSAID40X50S FAQ
The clamp-lock provides a static holding force of 900 N. It grips the rod at any position along the stroke and holds the load bidirectionally, but it only engages after the cylinder has completely stopped moving.
The clamp is released via a third G1/8 enclasp port, but only when air pressures on both sides of the piston are balanced to prevent abrupt rod movement. Unlike the single-rod BSAI, this BSAID double-rod version provides equal 528 N thrust in both directions and omits the FB, CA, CB, and CR mountings.
Related AirTAC Lock & Standard Cylinders
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