Airtac B52-MBL Copper-Free Aluminum Alloy Mini Cylinder B52-MBL20X25CA
The AirTAC Airtac B52-MBL Copper-Free Aluminum Alloy Mini Cylinder B52-MBL20X25CA is a genuine double-acting aluminum-barrel mini round cylinder with a Ø20mm bore and 25mm 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
- Stroke25 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionRubber bumper (MBLC variant: adjustable air cushion)
About the Airtac B52-MBL Copper-Free Aluminum Alloy Mini Cylinder B52-MBL20X25CA
The B52-MBL20X25CA is AirTAC's copper-free (copper-prohibited) version of the MBL20X25CA, a compact double-acting aluminum mini round cylinder. With a 20 mm bore and 25 mm stroke, it delivers 157 N of push force at 0.5 MPa, fitting into tight machine spaces where larger cylinders won't. The leading "B52-" prefix marks this as the copper-free build, designed for lines where copper and copper alloys are not permitted-such as ammonia systems or certain battery, electronics, and chemical plants. The exact material substitutions should be confirmed with us for your specific application.
The CA back cover is a pivot/clevis type that lets the cylinder swing on a pin, accommodating arcing or angular loads that a rigid mount cannot handle. The riveted rolling-packed aluminum barrel keeps weight low and the footprint small, though it is not designed for disassembly like a tie-rod cylinder. The carbon-steel rod with 20 um chrome plating resists wear and corrosion, while the heterogeneous two-way piston seal retains grease for extended service life. This SKU has no magnet (-S), so it cannot accept a position sensor switch.
Airtac B52-MBL Copper-Free Aluminum Alloy Mini Cylinder B52-MBL20X25CA Technical Specifications
| Model | Airtac B52-MBL Copper-Free Aluminum Alloy Mini Cylinder B52-MBL20X25CA |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø20 mm |
| Stroke | 25 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 B52-MBL Copper-Free Aluminum Alloy Mini Cylinder B52-MBL20X25CA
| MBL | Aluminum-barrel mini round cylinder, double acting. |
|---|---|
| 20 | Bore size in mm. |
| ×25 | 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 B52-MBL Copper-Free Aluminum Alloy Mini Cylinder B52-MBL20X25CA Is Used
Ammonia Refrigeration Valve Actuation
In ammonia-based industrial refrigeration skids, this copper-free B52-MBL20X25CA actuates small shut-off valves in tight valve trains. Its 157 N push at 0.5 MPa moves lightweight spools, while the CA pivot back cover compensates for slight misalignment in the linkage.
Battery Cell Tab Forming
During lithium-ion battery tab forming, this 20 mm bore cylinder applies a controlled 157 N force to bend thin copper or aluminum tabs. The copper-free construction avoids any risk of copper contamination in the clean assembly area, and the 25 mm stroke suits the short die travel.
Pharmaceutical Vial Tapping
On a pharmaceutical filling line, this compact cylinder provides a gentle 132 N pull at 0.5 MPa to retract a small vial-tapping mechanism. The riveted body keeps weight low on the indexing starwheel, and the CA pivot allows the tap head to follow the vial's slight arc.
Is the Airtac B52-MBL Copper-Free Aluminum Alloy Mini Cylinder B52-MBL20X25CA the Right Cylinder?
At 157 N push at 0.5 MPa, this B52-MBL20X25CA suits light-duty pushing or lifting in compact assemblies. If you need more force, step up to the 25 mm bore MBL25X25, which delivers 245 N push at 0.5 MPa. There is no smaller bore in the MBL line, so this is the entry point. The 25 mm stroke handles short, precise movements; for longer travel, consider the MBL20X50 or MBL20X75. The CA pivot back cover pairs with an SDB pivot bracket or a clevis for angular motion. For faster or heavier loads where end-of-stroke impact is a concern, the MBLC variant adds an adjustable air cushion. Note that this cylinder has a fixed rubber bumper, not a cushion, and it will not hold a load if air pressure is lost-use an external rod lock or pilot-operated check valve for position holding. The G1/8 port accepts PT (tapered) threads by default.
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 B52-MBL Copper-Free Aluminum Alloy Mini Cylinder B52-MBL20X25CA FAQ
At 0.5 MPa, the push force is 157 N and the pull force is 132 N. At 0.7 MPa, push increases to 220 N. The theoretical maximum force at 1.0 MPa is 32 kgf. These figures apply to the double-acting operation-air extends and retracts the rod.
The B52- prefix designates AirTAC's copper-free (copper-prohibited) build of the MBL20X25CA, intended for lines where copper alloys are banned, such as ammonia systems. The exact substituted materials should be confirmed with us. This SKU has no built-in magnet (-S), so it cannot accept a CMSG, DMSG, or EMSG position sensor switch.
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