Airtac MBLD Dual Axis Type Mini Cylinder MBLD40X125
The AirTAC MBLD Dual Axis Type Mini Cylinder MBLD40X125 is a genuine double-acting double-rod aluminum-barrel mini cylinder with a Ø40mm bore and 125mm 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
- Stroke125 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 MBLD40X125
The AirTAC MBLD40X125 is a compact, double-acting double-rod aluminum mini cylinder featuring a 40mm bore and 125mm stroke. A single piston drives a Ø16mm carbon-steel rod out of both end covers, yielding identical extend and retract forces of 528N at 0.5MPa and 739N at 0.7MPa. This equal annulus area on both sides makes it ideal for mechanisms requiring symmetrical thrust and velocity in both travel directions.
Because this specific SKU lacks the -S magnet suffix, it cannot accept an AirTAC CMSG, DMSG, or EMSG position sensor. The riveted rolling-packed aluminum barrel houses a fixed rubber bumper to soften end-of-stroke impact, while the rear protruding rod requires clear space behind the rear cover (overall length = A + 2 x stroke). You can mount a workpiece on the front rod and a cam or position flag on the rear rod for dual-side machine timing.
Airtac MBLD Dual Axis Type Mini Cylinder MBLD40X125 Technical Specifications
| Model | Airtac MBLD Dual Axis Type Mini Cylinder MBLD40X125 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (double rod) |
| Bore size | Ø40 mm |
| Stroke | 125 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 MBLD40X125
| MBLD | MBLD aluminum-barrel double-rod mini cylinder. |
|---|---|
| 40 | 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 MBLD40X125 Is Used
PCB Edge-Depaneling Saw
Drives a circular blade forward and back through 125mm to cut router boards, using the 528N bidirectional force to maintain steady feed rates without skewing.
Shuttle Transfer Carriage
Moves small aluminum jigs between two machining stations, using the rear rod end to trip an external mechanical limit flag at each 125mm extreme.
Connector Insertion Press
Pushes a 40-pin header into a PCB socket with 739N at 0.7MPa, then retracts with identical force to release the tooling without binding the twin rods.
Is the Airtac MBLD Dual Axis Type Mini Cylinder MBLD40X125 the Right Cylinder?
Stepping down, the 32mm bore variant provides 346N at 0.5MPa, while stepping up to the 50mm bore yields 881N both ways. Choose this 40mm bore if your mechanism needs roughly 528N of balanced thrust. Unlike the single-rod MBL which offers greater forward push, the MBLD provides equal bidirectional force and better anti-rotation guidance. If your application suffers from severe end-impact, consider the MBLCD variant which features adjustable air cushions instead of fixed rubber bumpers.
Mounting is limited to Basic, FA flange, or LB foot brackets; there is no back-cover or SDB pivot option for the double-rod design. To replace this unit, match the 40mm bore, 125mm stroke, G1/4 port, PT thread, and confirm no magnet is required. Note that a plain MBLD does not hold position without live air—the rod will drift if pressure drops, so fit an external locking device for fail-safe holding.
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 MBLD40X125 FAQ
Because a rod occupies both sides of the piston, the effective annulus area is identical in both directions. It delivers 528N at 0.5MPa and 739N at 0.7MPa on both extend and retract. The maximum theoretical force is 108kgf at 1.0MPa.
A single-rod MBL has a larger forward push area than pull area, causing unequal speed and force. The MBLD double-rod design makes push and pull forces equal, improves load guidance against rotation, and provides a rear rod extension for mounting a secondary cam or flag. This base MBLD40X125 has no -S magnet, so it cannot accept CMSG or DMSG sensors.
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