Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X75U
The AirTAC Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X75U is a genuine double-acting aluminum-barrel mini round cylinder with a Ø20mm bore and 75mm 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
- Stroke75 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 MBLC20X75U
The AirTAC MBLC20X75U is a compact double-acting aluminum mini cylinder engineered for tight spaces. It produces 157 N of push force and 132 N of pull force at 0.5 MPa. The 75 mm stroke is well-suited for short-travel indexing and small-part ejection. Unlike the base MBL, this MBLC variant features a screw-adjustable pneumatic cushion at both ends to decelerate the piston smoothly near stroke limits.
The U suffix denotes a rigid flat-end back cover for direct inline mounting. Built with a riveted rolling-packed aluminum barrel, the body is light and compact rather than a bulky tie-rod assembly. The 20 mm bore uses a G1/8 port and an Ø8 mm carbon-steel rod with 20 µm hard-chrome plating. Note that this specific SKU lacks a built-in magnet, so it cannot support a CMSG, DMSG, or EMSG position sensor.
Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X75U Technical Specifications
| Model | Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X75U |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø20 mm |
| Stroke | 75 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 MBLC20X75U
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 20 | Bore size in mm. |
| ×75 | 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 MBLC20X75U Is Used
PCB Depaneling Router
Provides 157 N of push to separate routed circuit boards, using the 75 mm stroke and tuned air cushion to prevent jarring impacts that could stress delicate solder joints.
Thermoformed Tray Ejector
Kicks lightweight packaging trays out of a forming press, where the adjustable end-cushioning ensures quiet, vibration-free stops during continuous high-speed cycling.
Connector Pin Insertion
Drives small electronic pins into housings over a 75 mm travel, relying on the rigid U flat-end mounting for precise inline alignment without deflection.
Is the Airtac MBLC Aluminum Alloy Mini Air Cylinder MBLC20X75U the Right Cylinder?
At 157 N push (0.5 MPa), this 20 mm bore is the smallest available size. If your application requires less force, you must step out of this mini cylinder family, but if you need more power, the next size up is the 25 mm bore, which provides 245 N push and 206 N pull at 0.5 MPa. Choose this MBLC over the fixed-bumper MBL when cycling speeds are high and you need to tune the end-of-stroke deceleration to protect the end covers.
Because this U-type flat-end cover mounts rigidly, side loads will transmit directly to the 8 mm rod, which has low side-load tolerance. For arcing or pivoting movements, consider a CA pivot cover instead. Remember that the adjustable air cushion only decelerates the load; it is not a brake and will not hold position if air pressure is lost or the valve centers. Replacement match: 20 mm bore, 75 mm stroke, G1/8 port, PT thread, U flat-end back cover, no 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 MBLC20X75U FAQ
At 0.5 MPa, this 20 mm bore cylinder delivers 157 N of push force and 132 N of 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 MBLC20X75U uses a screw-tunable needle at both ends to trap and bleed exhaust air, decelerating the piston smoothly near the stroke ends. You tune the needle to match the load and speed, which reduces impact noise and vibration compared to a fixed rubber bumper.
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