Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X50SCA
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X50SCA is a genuine double-acting aluminum-barrel mini round cylinder with a Ø20mm bore and 50mm stroke, G1/8 air ports and a fixed rubber bumper. Its compact riveted body suits push, hold and clamp motion in tight machine spaces.
- BoreØ20 mm
- Stroke50 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionRubber bumper (MBLC variant: adjustable air cushion)
About the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X50SCA
The AirTAC MBLC20X50SCA is a compact double-acting aluminum mini cylinder featuring a 20mm bore and 50mm stroke. It delivers 157 N push and 132 N pull force at 0.5 MPa. Unlike the base MBL, this variant uses a screw-adjustable pneumatic air cushion at both stroke ends. You tune the needle to smoothly decelerate the piston, cutting end-cover impact and vibration on faster moves.
This specific SKU includes a CA pivot/clevis back cover that swings on a pin to absorb angular arcing loads, plus a built-in magnet (-S) for CMSG, DMSG, or EMSG sensor switches. The riveted rolling-packed aluminum barrel keeps the body light for tight spaces, while the Ø8 mm carbon-steel rod features 20 µm hard-chrome plating to resist wear. The heterogeneous two-way grease-retaining piston seal maintains lubrication for speeds of 30-800 mm/s.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X50SCA Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X50SCA |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø20 mm |
| Stroke | 50 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M8×1.25 |
| 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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | — |
| Max (@1.0 MPa) | 32 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 MBLC20X50SCA
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 20 | Bore size in mm. |
| ×50 | 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 MBLC20X50SCA Is Used
PCB Pick-and-Place Arms
Drives small pick-and-place heads in electronics assembly, using the 50mm stroke and CA pivot to accommodate slight angular arm movement while the air cushion protects the end covers during rapid 30-800 mm/s cycles.
Packaging Flap Tucking
Tucks carton flaps at 157 N push force, where the tunable cushion prevents harsh snapping at the stroke end, reducing noise on high-speed packaging lines.
Semiconductor Gate Valves
Actuates small pneumatic gate valves in semiconductor fab equipment, using the -S magnet to trigger DMSG electronic sensors for precise 50mm position confirmation.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X50SCA the Right Cylinder?
Choose this 20mm bore when you need 157 N of push force at 0.5 MPa in a compact footprint. If your load is lighter, the smaller 20mm bore is the smallest available size, so you would step up to the 25mm bore for 245 N. Select the MBLC over the fixed-bumper MBL when your cycle speeds are high or the moved mass is enough to wear out a rubber bumper. Remember that the adjustable air cushion only decelerates the piston near the ends; it is not a brake. A plain double-acting cylinder drifts when air is lost or the valve centers, so fit an external rod lock or pilot-operated check valve if you need true position holding.
For replacement matching: verify the 20mm bore, 50mm stroke, G1/8 port, PT thread, CA pivot back cover, and the -S magnet. The CA clevis is ideal for arcing loads, whereas a rigid U flat-end cover suits straightforward linear pushes.
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 MBLC20X50SCA FAQ
At 0.5 MPa, it provides 157 N push and 132 N pull force. At 0.7 MPa, it provides 220 N push and 185 N pull. The maximum theoretical force is 32 kgf at 1.0 MPa. The operational speed range is 30-800 mm/s.
A screw needle at each end traps a pocket of exhaust air to decelerate the piston smoothly before it hits the end cover. You tune the needle to match your load and speed, which reduces impact, noise, and vibration. It is a deceleration device, not a load lock or brake.
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