Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X150-20S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X150-20S is a genuine double-acting aluminum-barrel mini cylinder with a Ø20mm bore, a 150mm nominal stroke and a rear adjustable-stroke stopper — trim up to 20mm for a usable window of 130–150mm. Adjustable air cushion (both ends).
- BoreØ20 mm
- Stroke150 mm
- Adjustable130–150 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionAdjustable air cushion (both ends)
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X150-20S
The AirTAC MBLCJ20X150-20S is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and a screw-tunable air cushion at both ends. It delivers 157 N of push force and 132 N of pull force at 0.5 MPa. The rear stopper allows you to trim up to 20 mm of travel, creating a usable end-position window of 130 to 150 mm for precise mechanical timing.
Unlike the base MBLJ which relies on a fixed rubber bumper, this model's adjustable cushion lets you dial in end-of-stroke deceleration to absorb kinetic energy from faster moves, protecting the end covers. The riveted rolling-packed barrel and heterogeneous two-way grease-retaining piston seal maintain tight pressure containment. Fitted with a built-in magnet (-S), it supports CMSG reed switches and DMSG/EMSG electronic sensors for position feedback. The Ø8 carbon-steel rod features 20 µm hard-chrome plating to resist wear in dynamic applications.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X150-20S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X150-20S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø20 mm |
| Nominal stroke | 150 mm |
| Adjustable window | 130–150 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 MBLCJ20X150-20S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 20 | Bore size in mm. |
| ×150 | 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 MBLCJ20X150-20S Is Used
PCB Pick-and-Place Timing
Uses the 130-150 mm adjustable stroke window to precisely set the lowering depth of a vacuum pickup head on a PCB assembly line, while the air cushion prevents jarring stops at 157 N push force.
Micro-Dispenser Valve Actuation
Tunes the exact open stroke of a metering valve on a medical syringe filling machine, leveraging the DMSG electronic sensor to confirm the closed position and the cushion to protect the valve seat.
Small-Part Ejection Pusher
Pushs lightweight plastic components out of an injection mold cavity with 132 N of pull force, using the rear stopper to compensate for mold plate thickness variations without reprogramming the PLC.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X150-20S the Right Cylinder?
Choose this 20 mm bore if you need 157 N push force at 0.5 MPa. If your process requires less force, the smallest available bore is the only option below this; if you need to step up to the next size, the 25 mm bore provides 245 N of push force at 0.5 MPa. The MBLCJ is preferred over the MBLJ when your moving mass or cycle speed demands tunable deceleration rather than a fixed rubber bumper impact. If your stroke length is fixed, the MBLC variant offers the same cushioning without the rear adjuster.
Remember that the rear adjuster is a travel stop, not a load-holding brake; the rod will drift if air is removed. Mounting is limited to Basic, FA flange, or LB foot styles—no SDB pivot or back-cover options exist. For a drop-in replacement, match the 20 mm bore, 150 mm stroke, 20 mm adjust code, G1/8 port, PT thread, and the -S magnet. At 150 mm stroke, the small Ø8 rod is susceptible to side-load bending, so use an external guide rail to prevent premature seal failure.
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 MBLCJ20X150-20S 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 increases to 220 N. The maximum theoretical force is 32 kgf at 1.0 MPa. The operating pressure range is 0.15 to 1.0 MPa.
The adjustable stroke is a rear mechanical stopper that physically limits the rod travel, allowing you to trim up to 20 mm off the 150 mm stroke for a usable window of 130-150 mm. The adjustable air cushion is a needle screw that tunes the exhaust flow at the end caps to decelerate the piston. Neither system locks the load; the rod will drift if air pressure is lost.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC Adjustable-Stroke Cylinders
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