
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC50X20SU is a genuine double-acting aluminum-barrel mini round cylinder with a Ø50mm bore and 20mm 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 MBLC50X20SU is a double-acting aluminum mini cylinder engineered for compact spaces requiring substantial force, delivering 981 N of push thrust at 0.5 MPa. Its defining feature over the base MBL is a screw-adjustable pneumatic cushion at both stroke ends. This needle valve lets you tune the end-of-stroke deceleration to match heavier loads, preventing end-cover impact and reducing vibration on high-frequency lines. The 20 mm stroke is ideal for short, powerful clamping or ejecting motions.
This SKU includes a built-in magnet (S) for CMSG, DMSG, or EMSG sensor switches to detect rod position, and a rigid U flat-end back cover. It features a riveted rolling-packed aluminum barrel for a lightweight footprint, a 20 µm hard-chrome plated carbon-steel rod, and a heterogeneous two-way grease-retaining piston seal. Note that the cushion only decelerates near the ends; it is not a brake and will not hold the load if air pressure is lost.
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC50X20SU |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø50 mm |
| Stroke | 20 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 | 982 N | 881 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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. |
|---|---|
| 50 | Bore size in mm. |
| ×20 | 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 a compact 981 N punch to eject dense plastic parts from injection molds, using the adjustable cushion to soften the impact at the end of the 20 mm travel.
Powers a heavy diverter gate on a packaging conveyor, relying on the built-in magnet to confirm gate position and the short stroke for rapid, repeatable routing.
Secures thick electronic PCB assemblies in an automated test fixture, using the 881 N pull force to hold the board rigidly while probes engage the circuit.
Choose this 50 mm bore when you need 981 N of push force at 0.5 MPa for short 20 mm movements. If your application is lighter, stepping down to the 40 mm bore yields 628 N of push force while saving space. If you need to move a larger mass, stepping up to the 63 mm bore provides 1558 N. The adjustable air cushion makes this MBLC version superior to the fixed rubber bumper MBL when cycling quickly with heavy tooling. For exact replacements, match the 50 mm bore, 20 mm stroke, G1/4 port, PT thread, U flat-end back cover, and the -S magnet. Because the stroke is only 20 mm, side-load risk is minimal compared to longer strokes, but always ensure the rigid U cover is squarely mounted to avoid rod binding.
Quick checklist
This 50 mm bore cylinder uses a G1/4 port and a Ø16 mm rod with an M14x1.5 thread. It generates 981 N push and 881 N pull at 0.5 MPa, 1374 N push at 0.7 MPa, and a theoretical maximum of 200 kgf at 1.0 MPa.
The cushion is a screw-tunable needle valve at both ends that traps exhaust air to decelerate the piston smoothly before it hits the end cover. You adjust it to match your load and speed, which reduces noise and wear; it is a damping feature, not a locking brake.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.