Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC63X125SU
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC63X125SU is a genuine double-acting aluminum-barrel mini round cylinder with a Ø63mm 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.
- BoreØ63 mm
- Stroke125 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM14×1.5
- CushionRubber bumper (MBLC variant: adjustable air cushion)
About the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC63X125SU
The AirTAC MBLC63X125SU is a double-acting aluminum mini cylinder engineered for high-force compact actuation. It delivers 1558 N of push force and 1457 N of pull force at 0.5 MPa, peaking at a theoretical 318 kgf at 1.0 MPa. Driven by a Ø16 mm carbon-steel rod with 20 µm hard-chrome plating, this 125 mm stroke unit is built for rigorous cycling.
Unlike the base MBL which relies on a fixed rubber bumper, this MBLC variant features a screw-adjustable pneumatic air cushion at both ends. You tune the needle to smoothly decelerate the piston near each stroke limit, cutting end-cover impact and vibration on heavy 63 mm bore moves. The riveted rolling-packed aluminum barrel keeps the body light for tight spaces, while the U flat-end back cover provides a rigid default rear mounting face. The built-in -S magnet enables position detection via CMSG, DMSG, or EMSG sensor switches.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC63X125SU Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC63X125SU |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø63 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M14×1.5 |
| 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1458 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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 MBLC63X125SU
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 63 | 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 MBLC63X125SU Is Used
Injection Mold Ejection
Provides the 1558 N push force needed to eject dense plastic automotive interior panels, using the tunable cushion to prevent harsh mold-striking impacts at the end of the 125 mm stroke.
Pallet Diverting
Handles heavy timber pallets on packaging lines by extending and retracting smoothly at speed, with the adjustable cushion absorbing the kinetic energy of the shifting mass.
Press Feed Clamping
Secures heavy steel blanks in a mechanical press feed system, using the 1457 N pull force to hold the material rigidly before the stamping cycle begins.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC63X125SU the Right Cylinder?
Stepping down, the 50 mm neighbour bore offers 981 N push at 0.5 MPa if your load is lighter and you need a smaller footprint; stepping up is not possible as 63 mm is the largest in this series. Choose this MBLC over the base MBL when your application runs at high speeds or high cycle frequencies where a fixed bumper would degrade. The U flat-end back cover provides rigid straight-line mounting. Remember that the adjustable air cushion only decelerates the stroke ends; it is not a lock, so the rod will drift if air is lost. Your exact replacement match is bore 63, stroke 125, port G1/4, rod thread M14x1.5, PT thread form, U back cover, and an integrated 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 MBLC63X125SU FAQ
At 0.5 MPa, it provides 1558 N of push force and 1457 N of pull force. At 0.7 MPa, the push force reaches 2181 N. The maximum theoretical force is 318 kgf at 1.0 MPa operating pressure.
The cushion is a screw-tunable pneumatic needle at both ends. You adjust it to meter the trapped exhaust air, smoothly decelerating the piston near the stroke limits. This protects the end covers from impact on fast, heavy moves, outperforming a fixed rubber bumper.
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