The AirTAC AirTAC MBL63X125SU Mini Cylinder | 63mm Bore 125mm Stroke 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.
The AirTAC MBL63X125SU is a double-acting aluminum mini round cylinder engineered for heavy-duty clamping in confined machinery spaces. Operating at 0.5 MPa, it provides 1558 N of push force and 1457 N of pull force across its 125 mm stroke. The riveted rolling-packed barrel design crimps the front and rear covers directly to the tube, yielding a lightweight, compact footprint that outmuscles larger profile cylinders without claiming ISO 15552 dimensional interchangeability. This specific U-type configuration features a rigid flat-end rear cover for secure, stationary mounting.
This SKU includes a built-in magnet (-S) for position detection via AirTAC CMSG reed or DMSG/EMSG electronic sensor switches. The carbon steel piston rod is treated with 20 um of hard chrome plating for superior wear and corrosion resistance, while a heterogeneous two-way piston seal retains grease internally for an extended service lifespan. End-of-stroke deceleration relies on a fixed rubber bumper rather than an adjustable cushion screw, making it ideal for predictable, repetitive cycles.
| Model | AirTAC MBL63X125SU Mini Cylinder | 63mm Bore 125mm Stroke |
|---|---|
| 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.
| 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.
| 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).
Provides the 1558 N of thrust required to knock out heavy molded plastic parts from tight tooling cavities where tie-rod cylinders cannot fit.
Uses the 125 mm stroke to deploy a heavy blocking gate on a 50 kg assembly line conveyor, absorbing the pallet impact via the fixed rubber bumper.
Applies precise downward clamping force on circuit board test fixtures, utilizing the built-in magnet to trigger DMSG electronic sensors at the exact press depth.
Delivering 318 kgf of maximum theoretical force at 1.0 MPa, this 63 mm bore is the largest standard size in the MBL series. If your application requires less force, step down to the 50 mm bore which yields 981 N of push at 0.5 MPa. Because this is the top tier, there is no larger MBL option; for even greater thrust, an ISO 15552 profile cylinder would be required. Choose the MBLC variant if your payload mass requires adjustable air cushioning to soften end-of-stroke impacts, or select the MSBL/MTBL single-acting models if you only need unidirectional push or pull actuation.
When replacing this unit, match the 63 mm bore, 125 mm stroke, G1/4 port size, and PT thread form. Ensure the U flat-end back cover and the -S magnet are retained for your existing CMSG/DMSG/EMSG sensor mounting. Note that the fixed rubber bumper softens impact but does not lock the rod; if pressure is lost or the valve is centered, the load will drift or drop. To hold a suspended load safely without live air pressure, integrate an external pilot-operated check valve or a dedicated rod lock.
Quick checklist
At 0.5 MPa, this double-acting cylinder delivers 1558 N push and 1457 N pull force. At 0.7 MPa, push increases to 2181 N, with a maximum theoretical force of 318 kgf at 1.0 MPa. The operational speed ranges from 30-800 mm/s.
No, the base MBL uses a fixed rubber bumper to absorb end-of-stroke impacts and lacks an adjustable cushion screw. If your application involves heavy moving masses requiring adjustable end-cushioning, you should upgrade to the MBLC variant.
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