
The AirTAC Airtac MBLD Dual Axis Type Mini Cylinder MBLD63X25S is a genuine double-acting double-rod aluminum-barrel mini cylinder with a Ø63mm bore and 25mm stroke. A rod exits both end covers, so extend and retract force are EQUAL — about 1458 N each way at 0.5 MPa. Fixed rubber bumper.
The AirTAC MBLD63X25S is a compact, double-acting double-rod aluminum mini cylinder. A single piston drives a Ø16 mm carbon-steel rod out of both end covers, yielding exactly 1457 N of force in both extend and retract directions at 0.5 MPa. This 25 mm short stroke is built for high-force positioning in tight spaces. The riveted rolling-packed aluminum barrel and grease-retaining piston seal ensure durable, leak-free operation.
Because the rod occupies both sides of the piston, the annulus area is identical in both chambers, making push and pull forces perfectly equal. The built-in magnet (-S) allows CMSG reed or DMSG/EMSG electronic switches to track position. End-of-stroke impact is absorbed by a fixed rubber bumper, while the rear rod end provides a convenient mounting point for a cam or position flag.
| Model | Airtac MBLD Dual Axis Type Mini Cylinder MBLD63X25S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (double rod) |
| Bore size | Ø63 mm |
| Stroke | 25 mm |
| Acting type | Double acting, double rod |
| Port size | G1/4 |
| Rod thread | M14×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Fixed rubber bumper |
| Max standard stroke | Up to 500 mm |
Double-rod overall length = A + 2 × stroke — leave clearance for the rear rod. MBLD/MBLCD mounting is Basic / FA / LB only (no SDB, no back-cover code). Thread options: PT / G / NPT.
| Pressure | Extend & retract force |
|---|---|
| 0.5 MPa | 1458 N |
| 0.7 MPa | 2041 N |
| Max (@1.0 MPa) | 297 kgf |
A rod on both piston faces makes the annulus area equal, so extend and retract force (and speed) are the same. Actual usable force is lower due to friction.
| MBLD | MBLD aluminum-barrel double-rod mini cylinder. |
|---|---|
| 63 | Bore size in mm. |
| ×25 | Stroke length in mm. |
| S | Optional built-in magnet for a CMSG/DMSG/EMSG sensor switch. |
| FA / LB | Mounting: FA flange or LB foot (no SDB on double-rod). |
Related: MBLCD (double rod, adjustable cushion), MBLC (single rod + cushion), MBL (single rod).
Uses the 2040 N retract force at 0.7 MPa to reliably knock stamped metal parts out of a die in a 25 mm quick stroke.
Mounts a physical stop flag on the rear rod to block pallets on a conveyor, utilizing equal both-way speed for smooth retraction.
Drives a bed-of-nails testing head with 1457 N of force, using the twin-rod design to prevent chassis rotation during probe contact.
For 63 mm bore applications, sizing up is not possible as this is the largest MBLD series bore. Stepping down to the 50 mm bore drops your both-way force to 881 N at 0.5 MPa. If your cycle speed causes severe end-impact, upgrade to the MBLCD variant which features adjustable air cushions instead of the standard fixed rubber bumper. Mounting is limited to Basic, FA flange, or LB foot brackets; there is no SDB pivot or back-cover option. A plain MBLD does not hold position without live air, so use an external lock for static holding. Replacement requires matching the 63 mm bore, 25 mm stroke, G1/4 PT port, and -S magnet.
Quick checklist
Because a rod exits both ends, the push and pull forces are equal. It generates 1457 N at 0.5 MPa and 2040 N at 0.7 MPa in both directions. The maximum theoretical force is 297 kgf at 1.0 MPa.
The twin-rod design provides equal extend and retract forces, prevents load rotation better than a single rod, and allows you to mount a secondary mechanism or position flag on the rear rod end.
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