Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X125SU
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X125SU 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 MBLC40X125SU
The AirTAC MBLC40X125SU is a double-acting aluminum mini cylinder featuring a 40 mm bore and a 125 mm stroke, delivering 628 N of push force at 0.5 MPa. Its defining feature is a screw-adjustable pneumatic cushion at both stroke ends, decelerating the piston smoothly to protect the end covers on fast or heavy moves. This 125 mm stroke is well-suited for mid-range indexing and lifting tasks where a fixed rubber bumper would wear out too quickly.
Built with a riveted rolling-packed aluminum barrel for a compact, lightweight footprint, it fits tight machine envelopes without the bulk of a tie-rod body. The Ø16 mm carbon-steel rod features 20 µm hard-chrome plating, paired with a heterogeneous two-way grease-retaining piston seal for lasting friction control. The built-in magnet (-S) enables position detection, while the U flat-end back cover provides a rigid rear mount.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X125SU Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X125SU |
|---|---|
| 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 MBLC40X125SU
| 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 MBLC40X125SU Is Used
PCB Router Gantry
Lifts and lowers a high-speed spindle router on a PCB depaneling machine, using the tunable cushion to stop the 125 mm descent smoothly without shaking the fragile board.
Bottle Divert Arm
Actuates a routing flap on a packaging line to divert filled glass bottles, relying on the 628 N push force and adjustable end-cushioning to prevent impact damage at high cycle rates.
Connector Pick-and-Place
Provides the Z-axis downstroke for an electronic connector placement head, using the -S magnet and a DMSG electronic sensor to confirm the 125 mm extend position before placing parts.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X125SU the Right Cylinder?
This 40 mm bore generates 628 N push and 528 N pull at 0.5 MPa. If your payload is lighter, stepping down to the 32 mm bore yields 402 N of push force and saves space; if you need more muscle, the 50 mm bore offers 981 N. Choose this MBLC variant over the base MBL when cycling speeds or moved masses exceed what a fixed rubber bumper can absorb. The adjustable needle lets you tune end-of-stroke deceleration, but note this cushion only slows the piston near the ends—it is not a lock, so the rod will drift if air pressure is lost.
For replacement matching, verify the 40 mm bore, 125 mm stroke, G1/4 port, PT thread form, U flat-end back cover, and the -S magnet. At 125 mm stroke, side-load risk is moderate, but ensuring true alignment or using an external guide will maximize seal life.
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 MBLC40X125SU FAQ
This 40 mm bore cylinder uses a G1/4 port and a Ø16 mm rod with an M12x1.25 thread. At 0.5 MPa it pushes with 628 N and pulls with 528 N. At 0.7 MPa, push increases to 880 N. The theoretical maximum force is 128 kgf at 1.0 MPa.
A screw needle at each end cover traps a pocket of exhaust air to decelerate the piston before it hits the cap. You tune this needle to match your load and speed, reducing impact noise and vibration. It only slows the rod near the stroke ends and does not function as a braking lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC40X125SU
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.