Airtac MBLD Dual Axis Type Mini Cylinder MBLD20X250S
The AirTAC MBLD Dual Axis Type Mini Cylinder MBLD20X250S is a genuine double-acting double-rod aluminum-barrel mini cylinder with a Ø20mm bore and 250mm stroke. A rod exits both end covers, so extend and retract force are EQUAL — about 132 N each way at 0.5 MPa. Fixed rubber bumper.
- BoreØ20 mm
- Stroke250 mm
- Port sizeG1/8
- Acting typeDouble acting, double rod
- Rod threadM8×1.25
- 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 MBLD20X250S
The AirTAC MBLD20X250S is a compact double-acting double-rod mini cylinder featuring a 20mm bore and 250mm stroke. Because the Ø8mm carbon-steel rod exits both end covers, the annulus area is identical on each side. This yields exactly 132N of force at 0.5 MPa in both extend and retract directions, ensuring perfectly balanced motion for light-duty positioning. The built-in magnet (-S) allows CMSG reed or DMSG/EMSG electronic sensors to track piston position along the 250mm travel.
This 250mm stroke suits extended linear transfers where a rear rod can drive a secondary mechanism or position flag. The riveted aluminum barrel keeps the frame light, while the fixed rubber bumper absorbs end-of-stroke impact. Remember that overall length equals the base body plus twice the stroke, so you must leave physical clearance at the rear for the protruding rod.
Airtac MBLD Dual Axis Type Mini Cylinder MBLD20X250S Technical Specifications
| Model | Airtac MBLD Dual Axis Type Mini Cylinder MBLD20X250S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (double rod) |
| Bore size | Ø20 mm |
| Stroke | 250 mm |
| Acting type | Double acting, double rod |
| Port size | G1/8 |
| Rod thread | M8×1.25 |
| 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 300 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 (Ø20mm, equal both ways)
| Pressure | Extend & retract force |
|---|---|
| 0.5 MPa | 132 N |
| 0.7 MPa | 185 N |
| Max (@1.0 MPa) | 27 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 MBLD20X250S
| MBLD | MBLD aluminum-barrel double-rod mini cylinder. |
|---|---|
| 20 | Bore size in mm. |
| ×250 | 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 MBLD20X250S Is Used
PCB Edge Conveyor Transfer
Uses the balanced 132N force and 250mm stroke to push circuit boards evenly between belt stages, while the rear rod mounts a physical limit flag to confirm cycle completion.
Loom Yarn Guide Indexing
Provides equal 132N force in both directions to shift a yarn guide across a 250mm path, preventing tension asymmetry that would occur with a single-rod cylinder.
Label Dispenser Head Pitch
Moves a labeling head 250mm to apply tamper-evident seals, relying on the -S magnet to trigger a DMSG electronic sensor for precise pitch registration.
Is the Airtac MBLD Dual Axis Type Mini Cylinder MBLD20X250S the Right Cylinder?
For higher thrust, stepping up to the 25mm bore provides 206N at 0.5 MPa; dropping to a smaller bore is not possible as 20mm is the minimum. Choose this MBLD double-rod format over the single-rod MBL when your mechanism requires equal push/pull forces or anti-rotation guidance via twin rods. If your application generates severe end-impact shocks, consider the MBLCD variant which features adjustable air cushions instead of this model's fixed rubber bumper.
Mounting is limited to Basic, FA flange, or LB foot brackets—there is no SDB pivot or back-cover option. At 250mm, this stroke approaches the 300mm maximum limit for a 20mm bore, meaning the small 8mm rod is highly susceptible to bending under lateral loads; always use an external guide rail to support the workpiece. For a direct replacement, match the 20mm bore, 250mm stroke, G1/8 PT port, and -S magnet. Note that a plain MBLD drifts without live air—the bumper softens impact but does not lock 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 MBLD20X250S FAQ
Because the double-rod design has equal piston area on both sides, output force is identical in both directions: 132N at 0.5 MPa, 185N at 0.7 MPa, and a maximum theoretical 27 kgf at 1.0 MPa.
Unlike a single-rod MBL cylinder where push force exceeds pull force, the MBLD has a rod exiting both ends. This equalizes extend and retract forces, and allows you to mount a secondary cam, tool, or position sensor flag on the rear rod protrusion.
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