Airtac MBLD Dual Axis Type Mini Cylinder MBLD20X250
The AirTAC MBLD Dual Axis Type Mini Cylinder MBLD20X250 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 MBLD20X250
The AirTAC MBLD20X250 is a compact, double-acting double-rod aluminum mini cylinder engineered for applications requiring equal force and speed in both directions. Because an Ø8 mm rod exits both ends of the piston, the annulus area is identical on extend and retract, yielding 132 N of force each way at 0.5 MPa. The 250 mm stroke is well-suited for intermediate linear transfers in tight spaces, while the riveted rolling-packed aluminum barrel and 20 µm hard-chrome plated carbon-steel rod ensure durable, low-friction operation.
This base configuration features a fixed rubber bumper to soften end-of-stroke impacts and uses PT threaded ports. Note that because this SKU lacks the -S magnet code, it cannot support CMSG, DMSG, or EMSG position sensors. The twin-rod design inherently resists torsional rotation better than a single rod, and the rear protrusion can drive a secondary mechanism or position flag. Remember that the overall length is A + 2 x stroke, so you must leave physical clearance at the rear for the extending rod.
Airtac MBLD Dual Axis Type Mini Cylinder MBLD20X250 Technical Specifications
| Model | Airtac MBLD Dual Axis Type Mini Cylinder MBLD20X250 |
|---|---|
| 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 MBLD20X250
| 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 MBLD20X250 Is Used
PCB Shuttle Transfer
Moves bare printed circuit boards between inspection stations with 132 N of equal push/pull force, using the rear rod end to mount a physical limit flag.
Gripper Jaw Sync
Drives a synchronized parallel gripper mechanism on a packaging machine, leveraging the twin rods to keep the jaws aligned and prevent torsional twist.
Component Ejector
Pushes electronic connectors out of a test socket at 250 mm stroke, relying on the fixed rubber bumper to soften the repetitive ejection impact.
Is the Airtac MBLD Dual Axis Type Mini Cylinder MBLD20X250 the Right Cylinder?
If you need less reach, the neighbouring MBLD20X200 provides a shorter 200 mm travel with the same 132 N output. Stepping up to the larger MBLD25X250 increases your both-way force to 206 N at 0.5 MPa if your payload demands it. Keep in mind the MBLD20X250 has no back-cover or SDB pivot option; mounting is limited to Basic, FA flange, or LB foot brackets. At 250 mm of stroke, the small Ø8 mm rod is susceptible to side-load bending, so an external guide rail is strongly recommended to prevent premature seal wear. The fixed rubber bumper absorbs impact but does not lock position—if the air supply drops, the rod will drift. For direct replacement, match the 20 mm bore, 250 mm stroke, G1/8 port, PT thread, and lack of magnet.
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 MBLD20X250 FAQ
Because it is a double-rod cylinder, the force is identical in both directions. It generates 132 N at 0.5 MPa and 185 N at 0.7 MPa on both extend and retract. The maximum theoretical force is 27 kgf at 1.0 MPa.
Unlike a single-rod cylinder which has a larger push force than pull force, the MBLD20X250 has a rod on both sides of the piston, making extend and retract forces perfectly equal. Additionally, the rear rod can be used to drive a secondary mechanism or mount a cam, but it requires rear clearance equal to the stroke length.
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