Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X60-20
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X60-20 is a genuine double-acting aluminum-barrel mini cylinder with a Ø20mm bore, a 60mm nominal stroke and a rear adjustable-stroke stopper — trim up to 20mm for a usable window of 40–60mm. Adjustable air cushion (both ends).
- BoreØ20 mm
- Stroke60 mm
- Adjustable40–60 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X60-20
The AirTAC MBLCJ20X60-20 is a compact double-acting mini cylinder featuring a 20mm bore and 60mm stroke. It integrates a rear-mounted stroke adjuster allowing you to trim up to 20mm of travel, creating a usable end-position window of 40-60mm. Delivering 157N of push force at 0.5 MPa, it is engineered for light-duty positioning. This model uses a G1/8 port and an Ø8 rod with an M8x1.25 thread.
Unlike the standard MBLJ which relies on a fixed rubber bumper, this MBLCJ variant incorporates a screw-tunable adjustable air cushion at both ends. This allows you to precisely manage end-of-stroke deceleration for faster cycling without damaging the end covers. Note that this specific SKU lacks a built-in magnet (-S), meaning it cannot support CMSG, DMSG, or EMSG position sensors. The riveted aluminum barrel and 20um hard-chrome plated carbon-steel rod ensure durability in tight spaces.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X60-20 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X60-20 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø20 mm |
| Nominal stroke | 60 mm |
| Adjustable window | 40–60 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 MBLCJ20X60-20
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 20 | Bore size in mm. |
| ×60 | 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 MBLCJ20X60-20 Is Used
PCB Edge Guide Trimming
Ideal for routing small printed circuit boards where the 132N pull force at 0.5 MPa securely retracts a light cutting head, while the 40-60mm stroke window dials in exact edge clearance.
Micro-Dispenser Positioning
Tunes the stroke end for a fluid dispensing valve, leveraging the adjustable air cushion to prevent needle splash when abruptly stopping a 50mm rapid extension.
Small Parts Ejector
Pushes lightweight plastic caps out of a mold cavity, using the 220N push force at 0.7 MPa and the rear stopper to vary ejection distance for different bin heights.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X60-20 the Right Cylinder?
If you need less force, the neighbouring 12mm bore class (from the broader MBL family) offers lower thrust, but stepping up to the 25mm bore provides 245N push at 0.5 MPa for heavier loads. Choose this MBLCJ over the MBLJ when your application requires tunable end-of-stroke deceleration rather than a fixed bumper impact. Remember that the rear adjuster acts only as a travel stop and the cushion only decelerates; neither holds the load in place, so external locking mechanisms are required for position holding. Mounting is restricted to Basic, FA, or LB styles, as this series omits SDB and back-cover options. To replace this unit, match the 20mm bore, 60mm stroke, 20mm adjust code, G1/8 PT thread, and confirm no magnet is fitted.
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 MBLCJ20X60-20 FAQ
At 0.5 MPa, this 20mm bore cylinder provides 157N of push force and 132N of pull force. At 0.7 MPa, the push force increases to 220N. The maximum theoretical force is 32 kgf at 1.0 MPa.
No, this specific SKU lacks the -S code, meaning no built-in magnet is fitted. You cannot mount CMSG (reed), DMSG, or EMSG (electronic) sensors for rod detection. You would need the MBLCJ20X60-20S variant for position feedback.
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Standard models usually ship in 3-4 days.
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