Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X125CA
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X125CA 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 MBLC40X125CA
The AirTAC MBLC40X125CA is a double-acting aluminum mini cylinder engineered with a screw-adjustable air cushion at both ends. Delivering 628 N of push force and 528 N of pull force at 0.5 MPa, this 40 mm bore unit is tailored for dynamic cycles where a fixed rubber bumper would fail. The 125 mm stroke provides ample travel for mid-length indexing tasks. Because this specific SKU lacks the -S suffix, it has no built-in magnet and cannot accept a CMSG, DMSG, or EMSG position sensor.
A defining trait of this configuration is the CA pivot clevis back cover, which allows the cylinder body to swing on a pin to accommodate arcing or angular loads. The riveted rolling-packed aluminum barrel keeps the envelope compact and lightweight, while the 20 µm hard-chrome plated carbon-steel rod pairs with a heterogeneous two-way grease-retaining piston seal to maintain lubrication over high-frequency cycles.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X125CA Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X125CA |
|---|---|
| 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 MBLC40X125CA
| 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 MBLC40X125CA Is Used
Pallet Diverters
Ideal for swinging or pushing pallets on a 125 mm arc, using the CA clevis to absorb lateral misalignment while the cushion softens the 628 N end stop.
Stamping Press Feeders
Feeds blanks into a mechanical press; the tunable cushion prevents the 880 N force at 0.7 MPa from slamming the clevis bracket during rapid retraction.
Packaging Flap Folders
Folds carton flaps at high frequency where the riveted aluminum body resists shop debris and the cushioning protects the mechanical linkage.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X125CA the Right Cylinder?
When sizing this actuator, stepping down to the 32 mm bore reduces output to 402 N push at 0.5 MPa, whereas stepping up to the 50 mm bore increases it to 981 N. Choose the MBLC over the base MBL when moving heavier masses at high speeds, as the needle valve smoothly decelerates the piston near the stroke ends to prevent end-cover impact. Note that the adjustable cushion only decelerates near the ends; it is not a lock, so the rod will drift if air is lost or the valve centers. For exact replacement matching, verify the 40 mm bore, 125 mm stroke, G1/4 port, PT tapered thread, CA pivot cover, and the absence of a magnet.
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 MBLC40X125CA FAQ
At 0.5 MPa, this 40 mm bore cylinder provides 628 N push and 528 N pull force. At 0.7 MPa, it yields 880 N push and 739 N pull. The maximum theoretical force is 128 kgf at 1.0 MPa.
The screw-adjustable pneumatic cushion traps exhaust air at both ends to decelerate the piston smoothly, which is critical for heavy loads at high speeds. Unlike a fixed rubber bumper, you can tune the needle to match the load and speed, cutting impact noise and vibration. This SKU has no -S magnet, so it cannot fit a sensor.
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