Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X80-20S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X80-20S is a genuine double-acting aluminum-barrel mini cylinder with a Ø20mm bore, a 80mm nominal stroke and a rear adjustable-stroke stopper — trim up to 20mm for a usable window of 60–80mm. Adjustable air cushion (both ends).
- BoreØ20 mm
- Stroke80 mm
- Adjustable60–80 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X80-20S
The AirTAC MBLCJ20X80-20S is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and an adjustable air cushion at both ends. It delivers 157 N push and 132 N pull at 0.5 MPa. The 20 mm adjustment code allows you to trim the rear travel, creating a usable 60-80 mm stroke window for exact positioning. An M8x1.25 rod end and G1/8 port keep the package small.
Unlike the base MBLJ with its fixed rubber bumper, this model uses screw-tunable air cushions to decelerate the rod near each end-cap, absorbing impact for faster cycling. The riveted rolling-packed aluminum barrel and 20 um hard-chrome plated carbon-steel rod provide durability. Fitted with a built-in magnet (-S), it supports CMSG reed and DMSG/EMSG electronic sensors for position feedback.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X80-20S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X80-20S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø20 mm |
| Nominal stroke | 80 mm |
| Adjustable window | 60–80 mm (trim 20 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 | Adjustable air cushion (both ends) |
| Max standard stroke | Up to 300 mm |
The rear stopper sets the end position — it is a travel stop, not a lock. Overall length = A + 2 × stroke + adjustable stroke. MBLJ/MBLCJ mounting is Basic / FA / LB only (no SDB, no back-cover code). 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 margin.
Model Code: Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X80-20S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 20 | Bore size in mm. |
| ×80 | Nominal stroke length in mm. |
| -20 | Adjustable-stroke amount (mm you can trim at the rear). |
| S | Optional built-in magnet for a CMSG/DMSG/EMSG sensor switch. |
Related: MBLJ (adjustable stroke, fixed bumper), MBL (fixed stroke), MBLD (double rod).
Where the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X80-20S Is Used
PCB Pick-and-Place Nozzle
Actuates a vertical pick-and-place nozzle for surface mount components, using the 60-80 mm stroke window to fine-tune Z-axis drop height while the air cushion prevents end-cap impact during fast retraction.
Micro-Dispense Valve Trigger
Drives a precision dosing valve for UV adhesives in electronics manufacturing, where the 157 N force cleanly opens the valve and the DMSG electronic sensor times the shot volume.
Thin-Film Web Edge Guide
Positions a lateral guide roller for flexible film tracking, using the adjustable rear stopper to set exact web tension margins within the 80 mm travel limit.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X80-20S the Right Cylinder?
For lower force needs, stepping down to the 12 mm bore version drops output to roughly 80 N, while stepping up to the 25 mm bore increases push force to 245 N at 0.5 MPa. Choose the MBLCJ over the MBLJ when your cycle speeds require tunable deceleration rather than a fixed bumper, or the MBLC if you need a fixed stroke length without the rear adjuster.
Remember that the rear adjuster is a mechanical travel stop, not a lock, and the air cushion only decelerates, neither holds the load in place without live air. Mounting is limited to Basic, FA, or LB styles, as this series lacks back-cover or SDB pivot options. To replace this exact unit, match the 20 mm bore, 80 mm stroke, 20 mm adjust code, G1/8 PT thread, and the -S magnet specification.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Adjustable window fits your end position
- ✓ Adjuster is a travel stop, not a lock
- ✓ Magnet (S) for sensors?
- ✓ Side load — add a guide on long strokes
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Set the rear stopper for the end position (a travel stop, not a lock).
- check Avoid side load; add an external guide on long strokes.
- check Mounting: Basic / FA flange / LB foot (no SDB, no back-cover code).
- check Installation by qualified personnel per AirTAC docs.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X80-20S FAQ
At 0.5 MPa, the push force is 157 N and the pull force is 132 N. At 0.7 MPa, the push force is 220 N. The maximum theoretical force is 32 kgf at 1.0 MPa. Operating pressure ranges from 0.15 to 1.0 MPa.
The rear adjustable stroke is a mechanical travel stop that sets the exact end-of-travel position within a 60-80 mm window. The adjustable air cushion is a screw-tunable valve that decelerates the piston near the end caps to prevent impact damage. Neither feature locks or holds the load in place without live air pressure.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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