Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X150-50S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X150-50S 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 50mm for a usable window of 100–150mm. Adjustable air cushion (both ends).
- BoreØ20 mm
- Stroke150 mm
- Adjustable100–150 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 MBLCJ20X150-50S
The AirTAC MBLCJ20X150-50S is a compact, double-acting single-rod mini cylinder featuring a riveted aluminum barrel. It integrates a rear stroke adjuster allowing you to trim up to 50 mm of travel, creating a usable end-position window of 100 to 150 mm. Delivering 157 N of push force at 0.5 MPa, this 20 mm bore unit is tailored for lighter-duty machinery requiring exact end-of-stroke positioning.
Unlike the base MBLJ which relies on a fixed rubber bumper, this MBLCJ variant incorporates a screw-tunable adjustable air cushion at both ends to decelerate the rod smoothly. The rear stopper sets the travel end but does not lock or hold the load; without live air pressure, the rod will drift. The integrated -S magnet enables position detection via CMSG reed or DMSG/EMSG electronic switches, and the Ø8 mm carbon-steel rod features 20 µm hard-chrome plating to resist wear.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X150-50S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X150-50S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø20 mm |
| Nominal stroke | 150 mm |
| Adjustable window | 100–150 mm (trim 50 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 MBLCJ20X150-50S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 20 | Bore size in mm. |
| ×150 | Nominal stroke length in mm. |
| -50 | 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 MBLCJ20X150-50S Is Used
PCB Router Z-Axis
Governs the vertical plunge of a light-duty PCB depaneling router, using the 100-150 mm adjustable window to set exact cutting depth while the air cushion prevents chatter at stroke end.
Lab Dispenser Positioning
Trims the downward travel of a fluid dispensing head in automated lab equipment, leveraging the 157 N push force to actuate a valve seat without slamming the delicate manifold.
Small Parts Ejector
Pushes lightweight plastic caps out of a molding machine chute, relying on the tunable cushion to silently decelerate the 150 mm stroke before hitting the front cover.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X150-50S the Right Cylinder?
Stepping up from this 20 mm bore (157 N push @0.5 MPa) to the 25 mm bore yields 245 N, while stepping down is not an option as 20 mm is the smallest available size. Choose the MBLCJ over the MBLJ when your application requires tunable end-of-stroke deceleration rather than a fixed bumper, or over the MBLC if you need that rear travel-stop mechanism. Remember that the adjuster and cushion only manage motion; they do not hold position. Mounting is limited to Basic, FA flange, or LB foot styles (no SDB or back-cover options). For exact replacement matching, verify: 20 mm bore, 150 mm stroke, 50 mm adjust code, PT threaded port, and the -S magnet. With a 150 mm stroke on an Ø8 mm rod, external guidance is recommended to prevent rod bending under side loads.
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 MBLCJ20X150-50S FAQ
At 0.5 MPa it provides 157 N push and 132 N pull force; at 0.7 MPa it pushes 220 N. The maximum theoretical force is 32 kgf at 1.0 MPa. It uses a G1/8 port and an M8x1.25 rod-end thread.
The rear adjustable stroke lets you mechanically trim the travel end-point within a 100-150 mm window, acting as a hard stop. The adjustable air cushion uses screws at both ends to tune the pneumatic deceleration rate. Neither feature locks or holds the load in place.
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.
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