Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X50-10
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X50-10 is a genuine double-acting aluminum-barrel mini cylinder with a Ø20mm bore, a 50mm nominal stroke and a rear adjustable-stroke stopper — trim up to 10mm for a usable window of 40–50mm. Adjustable air cushion (both ends).
- BoreØ20 mm
- Stroke50 mm
- Adjustable40–50 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 MBLCJ20X50-10
The AirTAC MBLCJ20X50-10 is a compact double-acting mini cylinder featuring a 20mm bore and a 50mm stroke. It integrates a rear travel stopper allowing you to trim up to 10mm, creating a precise 40-50mm usable stroke window. Delivering 157N of push force at 0.5MPa, it is paired with an adjustable air cushion at both ends to regulate end-of-stroke deceleration. This screw-tunable cushioning absorbs kinetic energy more effectively than a fixed rubber bumper, protecting the end covers during faster cycling.
This configuration uses a G1/8 port and an Ø8mm hard-chrome plated carbon steel rod. Because this specific SKU lacks the -S suffix, it is built without a magnet and cannot host a CMSG, DMSG, or EMSG position sensor. The riveted rolling-packed aluminum barrel keeps the frame light for tight machine spaces. Remember the rear stopper sets the travel end but does not hold the load; you must maintain live air pressure to keep the rod in position.
When sizing this actuator, consider stepping up to the 25mm bore if you need greater thrust (245N push at 0.5MPa), or down to a smaller body if your payload is minimal. Unlike the MBLJ which relies on a fixed bumper, this MBLCJ variant allows you to fine-tune the end cushioning for varying loads. The rear stroke adjuster and the air cushion regulate motion but neither acts as a mechanical lock, so external guides are recommended if side loads are present. Mounting is limited to Basic, FA flange, or LB foot styles; no SDB pivot or back-cover options exist. For a direct replacement, match the 20mm bore, 50mm stroke, 10mm adjust code, PT thread, and confirm no magnet is required.
The overall length follows the A + 2x stroke + adjust formula, meaning the 10mm trim slightly extends the rear footprint. If your application approaches the 300mm maximum standard stroke for this bore, adding an external guide becomes critical to prevent rod bending. This cylinder operates at speeds from 30-800mm/s and handles pressures from 0.15-1.0MPa.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X50-10 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X50-10 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø20 mm |
| Nominal stroke | 50 mm |
| Adjustable window | 40–50 mm (trim 10 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 MBLCJ20X50-10
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 20 | Bore size in mm. |
| ×50 | Nominal stroke length in mm. |
| -10 | 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 MBLCJ20X50-10 Is Used
PCB Depanelling Ejector
Uses the 40-50mm adjusted stroke window to push singulated circuit boards out of a routing fixture without overshooting, relying on the 157N force and tuned air cushion to prevent impact damage.
Micro-Clamp Actuator
Ideal for small pneumatic vises holding delicate electronic connectors, where the adjustable air cushion slows the 50mm travel precisely to avoid crushing the component at the end of the stroke.
Light-Part Sorting Diverter
Drives a lightweight flap in a pharmaceutical blister-pack conveyor, using the rear stopper to set an exact 45mm travel limit that prevents the mechanism from hitting the frame rail.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X50-10 the Right Cylinder?
When sizing this actuator, consider stepping up to the 25mm bore if you need greater thrust (245N push at 0.5MPa), or down to a smaller body if your payload is minimal. Unlike the MBLJ which relies on a fixed bumper, this MBLCJ variant allows you to fine-tune the end cushioning for varying loads. The rear stroke adjuster and the air cushion regulate motion but neither acts as a mechanical lock, so external guides are recommended if side loads are present. Mounting is limited to Basic, FA flange, or LB foot styles; no SDB pivot or back-cover options exist. For a direct replacement, match the 20mm bore, 50mm stroke, 10mm adjust code, PT thread, and confirm no magnet is required.
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 MBLCJ20X50-10 FAQ
At 0.5 MPa, the MBLCJ20X50-10 delivers 157N push and 132N pull force. At 0.7 MPa, the push force increases to 220N, with a theoretical maximum of 32 kgf at 1.0 MPa. The cylinder does not hold position without live air; the rear adjuster is a travel stop and the air cushion only decelerates, neither acts as a lock.
No. Because this specific SKU lacks the -S suffix, it is manufactured without a built-in magnet and cannot be used with AirTAC CMSG, DMSG, or EMSG sensor switches. If position detection is required, you must select the MBLCJ20X50-10S variant.
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