Airtac MBLD Dual Axis Type Mini Cylinder MBLD50X125
The AirTAC Airtac MBLD Dual Axis Type Mini Cylinder MBLD50X125 is a genuine double-acting double-rod aluminum-barrel mini cylinder with a Ø50mm bore and 125mm stroke. A rod exits both end covers, so extend and retract force are EQUAL — about 881 N each way at 0.5 MPa. Fixed rubber bumper.
- BoreØ50 mm
- Stroke125 mm
- Port sizeG1/4
- Acting typeDouble acting, double rod
- Rod threadM14×1.5
- CushionFixed rubber bumper
- 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 MBLD Dual Axis Type Mini Cylinder MBLD50X125
The AirTAC MBLD50X125 is a double-acting, double-rod aluminum mini cylinder featuring a 50mm bore and 125mm stroke. Because a carbon-steel rod protrudes from both end covers, the annulus area is identical on extend and retract. This yields exactly 881N of force at 0.5 MPa in both directions, making it ideal for synchronous dual-side mechanisms. The riveted rolling-packed barrel and 20um hard-chrome plating ensure rugged, compact operation. This SKU uses a default PT tapered port thread and lacks a built-in magnet.
A defining physical trait of this double-rod design is that overall length equals the base body length plus twice the stroke, meaning the rear rod actively protrudes and requires dedicated clearance in your machine layout. The end-of-stroke deceleration is handled by a fixed rubber bumper. Because this specific model lacks the -S suffix, it cannot accept a CMSG, DMSG, or EMSG position sensor. The twin 16mm rods provide better resistance to torsional twist than a single rod, though external guides remain necessary for heavy lateral loads.
Airtac MBLD Dual Axis Type Mini Cylinder MBLD50X125 Technical Specifications
| Model | Airtac MBLD Dual Axis Type Mini Cylinder MBLD50X125 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (double rod) |
| Bore size | Ø50 mm |
| Stroke | 125 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.
Output Force (Ø50mm, equal both ways)
| Pressure | Extend & retract force |
|---|---|
| 0.5 MPa | 881 N |
| 0.7 MPa | 1234 N |
| Max (@1.0 MPa) | 180 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.
Model Code: Airtac MBLD Dual Axis Type Mini Cylinder MBLD50X125
| MBLD | MBLD aluminum-barrel double-rod mini cylinder. |
|---|---|
| 50 | Bore size in mm. |
| ×125 | 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).
Where the Airtac MBLD Dual Axis Type Mini Cylinder MBLD50X125 Is Used
Textile Loom Let-Off
Drives a symmetric tensioning beam in a textile loom, using the 881N both-way force to maintain uniform fabric tension during 125mm travel without torsional twist.
PCB Conveyor Centering
Deploys a rear-rod mounted cam to actuate a secondary lane-stop while the front rod pushes a PCB pallet, synchronizing dual actions within a compact electronics assembly cell.
Packaging Flap Folder
Folds carton flaps simultaneously from both sides, leveraging the equal extend and retract speeds to keep the packaging line balanced over its 125mm stroke.
Is the Airtac MBLD Dual Axis Type Mini Cylinder MBLD50X125 the Right Cylinder?
To size this 50mm bore correctly, note that stepping down to the 40mm bore drops your equal both-way force to 528N at 0.5 MPa, while stepping up to the 63mm bore increases it to 1457N. Choose the MBLD50X125 when a 125mm stroke delivers the precise travel needed for a dual-ended push-pull cycle. If your application suffers from severe end-of-stroke shock loads, consider the MBLCD variant, which substitutes the fixed rubber bumper with an adjustable air cushion. Mounting is limited to Basic, FA flange, or LB foot brackets; there is no SDB pivot or back-cover option available for the double-rod series. To replace this cylinder, match the 50mm bore, 125mm stroke, G1/4 port, PT thread, and lack of a magnet. Remember that the fixed bumper softens impact but does not lock the rod; without live air pressure, the cylinder will drift and cannot hold position.
Quick checklist
- ✓ Equal force both ways at your pressure
- ✓ Rear-rod clearance (length = A + 2 × stroke)
- ✓ Mounting: Basic / FA / LB only
- ✓ Magnet (S) for sensors?
- ✓ Side load — add a guide on long strokes
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Leave clearance for the rear rod (length = A + 2 × stroke).
- check Avoid side load; add an external guide on long strokes.
- check Mounting: Basic / FA flange / LB foot (no SDB, no back-cover code).
- check Installation by qualified personnel per AirTAC docs.
Airtac MBLD Dual Axis Type Mini Cylinder MBLD50X125 FAQ
The force is perfectly equal in both directions because the double-rod design creates the same annulus area on both sides of the piston. It outputs 881N at 0.5 MPa and 1233N at 0.7 MPa for both extend and retract. The maximum theoretical force is 180kgf (approx 1765N) at 1.0 MPa.
This specific MBLD50X125 SKU lacks the -S code, meaning it has no built-in magnet and cannot accept CMSG, DMSG, or EMSG sensors. The double-rod configuration allows you to mount a workpiece on one end and a mechanical position flag or cam on the protruding rear rod, while also providing better anti-rotation guidance than a single-rod cylinder.
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