Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC63X125U
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC63X125U 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 MBLC63X125U
The AirTAC MBLC63X125U is a double-acting, single-rod aluminum mini cylinder engineered for demanding compact automation. It features a 63 mm bore and a 125 mm stroke, generating 1558 N of push force and 1457 N of pull force at 0.5 MPa. The integrated adjustable air cushion at both ends allows you to tune end-of-stroke deceleration via a needle screw, absorbing kinetic energy smoothly to protect the end covers on heavy or fast moves.
This model uses a robust Ø16 mm carbon-steel rod with 20 µm hard-chrome plating for wear resistance, paired with a heterogeneous two-way grease-retaining piston seal. The riveted rolling-packed aluminum barrel keeps the overall footprint tight while maintaining structural integrity. The U flat-end back cover provides a rigid rear mount, and since this specific SKU lacks the -S magnet suffix, it cannot accept a CMSG, DMSG, or EMSG position sensor switch.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC63X125U Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC63X125U |
|---|---|
| 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 MBLC63X125U
| 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 MBLC63X125U Is Used
Injection Mold Ejection
Provides 1558 N of push force to eject heavy plastic parts from injection molds, using the adjustable air cushion to soften the final ejection impact and protect mold surfaces.
Pallet Diverter Arm
Acts as a rigid U-mounted diverter on high-speed packaging lines, moving heavy pallets laterally with 1457 N of pull force while the tunable cushion prevents end-cap shock.
Bending Machine Clamp
Secures thick sheet metal in a CNC bending machine, applying 2181 N of clamping force at 0.7 MPa with a 125 mm stroke to clear the workpiece during tool engagement.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC63X125U the Right Cylinder?
Stepping down from this 63 mm bore (1558 N at 0.5 MPa), the 50 mm bore yields 981 N of push force, making it the logical choice if your payload is lighter and you need to save space. Stepping up is not possible as 63 mm is the largest standard MBL diameter, so for higher kinetic energy demands, you must manage the load externally or explore alternative series. Choose the MBLC over the fixed-bumper MBL when cycling speeds are high and the moving mass requires tunable pneumatic deceleration rather than a rubber impact stop. For exact replacement, match the 63 mm bore, 125 mm stroke, G1/4 port, PT thread, U flat-end back cover, and no magnet. Note that a plain double-acting cylinder drifts when air is removed; the air cushion only decelerates near the stroke ends and does not function as a locking brake.
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 MBLC63X125U FAQ
At 0.5 MPa, this 63 mm bore cylinder provides 1558 N of push force and 1457 N of pull force. At 0.7 MPa, the push force increases to 2181 N. The maximum theoretical force is 318 kgf at 1.0 MPa.
The MBLC63X125U features a screw-tunable pneumatic needle at both ends. You adjust the needle to trap and meter exhaust air near the stroke endpoints, smoothly decelerating the load to prevent impact damage. It is a deceleration device, not a load lock or brake.
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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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