Airtac MBLD Dual Axis Type Mini Cylinder MBLD40X250S
The AirTAC MBLD Dual Axis Type Mini Cylinder MBLD40X250S is a genuine double-acting double-rod aluminum-barrel mini cylinder with a Ø40mm bore and 250mm stroke. A rod exits both end covers, so extend and retract force are EQUAL — about 528 N each way at 0.5 MPa. Fixed rubber bumper.
- BoreØ40 mm
- Stroke250 mm
- Port sizeG1/4
- Acting typeDouble acting, double rod
- Rod threadM12×1.25
- 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 MBLD40X250S
The AirTAC MBLD40X250S is a compact double-acting double-rod aluminum mini cylinder. A Ø16 carbon-steel rod with 20 um hard-chrome plating exits both end covers, yielding identical 528 N extend and retract force at 0.5 MPa. The built-in magnet (-S) supports CMSG reed or DMSG/EMSG electronic sensors for position detection. The 250 mm stroke suits mid-range transfer tasks.
Because the piston annulus area is identical on both sides, push and pull speeds match exactly. The riveted rolling-packed aluminum barrel and grease-retaining piston seal ensure stable operation. Overall length equals A plus 2 x stroke, so you must leave rear-rod clearance for the protruding end. The end-of-stroke impact is absorbed by a fixed rubber bumper.
Airtac MBLD Dual Axis Type Mini Cylinder MBLD40X250S Technical Specifications
| Model | Airtac MBLD Dual Axis Type Mini Cylinder MBLD40X250S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (double rod) |
| Bore size | Ø40 mm |
| Stroke | 250 mm |
| Acting type | Double acting, double rod |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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 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 (Ø40mm, equal both ways)
| Pressure | Extend & retract force |
|---|---|
| 0.5 MPa | 528 N |
| 0.7 MPa | 739 N |
| Max (@1.0 MPa) | 108 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 MBLD40X250S
| MBLD | MBLD aluminum-barrel double-rod mini cylinder. |
|---|---|
| 40 | 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 MBLD40X250S Is Used
PCB Stencil Cleaner
Drives a 250 mm squeegee carriage on a solder paste stencil printer, using the 528 N force and twin rods to keep the blade perfectly anti-rotation without tilting.
Semiconductor Wafer Gate
Actuates a dual-side access door on a wafer loading station, using the rear rod end to trip an external CMSG reed sensor for a confirmed open signal.
Textile Web Guide
Shifts a fabric edge-guide roller 250 mm in and out, relying on the equal both-way speed to prevent tension snags across the loom beam.
Is the Airtac MBLD Dual Axis Type Mini Cylinder MBLD40X250S the Right Cylinder?
If you need less force, step down to the 32 mm bore (346 N @0.5 MPa). If your application requires more thrust, step up to the 50 mm bore (881 N @0.5 MPa). For this 250 mm stroke, the 8-16 mm rod needs external guide support to prevent bending under side loads. The base MBLD uses a fixed rubber bumper; choose the MBLCD variant if your cycle speed demands adjustable air cushioning.
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; the bumper softens impact but is not a lock. To replace this unit, match the 40 mm bore, 250 mm stroke, G1/4 port, PT thread, and -S 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 MBLD40X250S FAQ
Because the double-rod design has equal annulus area on both sides, the force is identical in both directions: 528 N at 0.5 MPa, 739 N at 0.7 MPa, and a maximum of 108 kgf at 1.0 MPa.
A rod exits both ends, giving equal extend/retract force and speed. The rear rod can mount a cam or position flag, and the twin rods resist twist better than a single rod. The -S code means a magnet is fitted for CMSG, DMSG, or EMSG sensors.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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