Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X125SCA
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X125SCA is a genuine double-acting aluminum-barrel mini round cylinder with a Ø40mm bore and 125mm stroke, G1/4 air ports and a fixed rubber bumper. Its compact riveted body suits push, hold and clamp motion in tight machine spaces.
- BoreØ40 mm
- Stroke125 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionRubber bumper (MBLC variant: adjustable air cushion)
About the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X125SCA
The AirTAC MBLC40X125SCA is a double-acting aluminum mini cylinder with a 40 mm bore and 125 mm stroke. A screw-adjustable pneumatic cushion at both ends decelerates the piston smoothly near stroke extremes, cutting end-cover impact and vibration on faster moves. It is not a load lock, but a tunable deceleration device. At 0.5 MPa it yields 628 N push and 528 pull force, peaking at 128 kgf.
This variant includes a built-in magnet (-S) for CMSG, DMSG, or EMSG sensor switches to detect rod position. The CA pivot clevis back cover swings on a pin to accommodate arcing loads. A heterogeneous two-way grease-retaining piston seal and a 20 µm hard-chrome carbon-steel Ø16 rod ensure lasting friction control. The riveted rolling-packed barrel keeps the body compact for tight spaces.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X125SCA Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X125SCA |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø40 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| 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 | Rubber bumper (MBLC variant: adjustable air cushion) |
| Max stroke | Up to 500 mm |
Specifications follow the official AirTAC MBL series datasheet. Confirm against the product label before installation. Standard stroke to 500 mm (special order to 800 mm). Thread options: PT / G / NPT.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X125SCA
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 40 | Bore size in mm. |
| ×125 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related variants: MBLC (adjustable cushion), MBLD (double rod), MBLJ (adjustable stroke), MSBL/MTBL (single acting).
Where the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X125SCA Is Used
Textile Loom Beater
Drives the loom beater mechanism at high frequency, using the tunable cushion to soften the 125 mm stroke impact and protect the machine frame during rapid weaving cycles.
Packaging Flap Folder
Folds corrugated carton flaps on a continuous packaging line, relying on the CA pivot clevis to absorb slight misalignment while delivering 628 N of precise folding force.
PCB Degassing Press
Applies downward pressure to vacuum seal laminated circuit boards, using the DMSG electronic sensor to verify the 125 mm stroke endpoint before the resin cures.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X125SCA the Right Cylinder?
If 628 N of push force is excessive for your payload, step down to the 32 mm bore (402 N push at 0.5 MPa). If you need to move heavier assemblies, step up to the 50 mm bore (981 N push at 0.5 MPa). Choose this MBLC over the base MBL when cycling fast or moving enough mass that a fixed rubber bumper would fail to absorb the shock.
This 125 mm stroke CA pivot model handles angular arcing paths well. For rigid linear thrust, the U flat-end cover is preferable. The -S magnet supports CMSG reed and DMSG/EMSG electronic sensors. It uses a G1/4 port and M12x1.25 rod thread. Note that a standard double-acting cylinder drifts if air is lost; add an external rod lock for position holding.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (LB / FA / SDB) and back cover (CA pivot / U flat-end).
- check Installation by qualified personnel per AirTAC docs.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X125SCA FAQ
At 0.5 MPa it provides 628 N push and 528 N pull force. At 0.7 MPa it provides 880 N push and 739 N pull. The maximum theoretical force is 128 kgf at 1.0 MPa. It uses a G1/4 port and a Ø16 mm rod with an M12x1.25 thread.
The cushion is a screw-tunable needle at both ends that traps exhaust air to decelerate the piston near the end of travel, reducing shock on fast moves. The CA back cover is a pivot clevis that swings on a pin, making it ideal for loads that follow an arcing path rather than a rigid straight line.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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