Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X40-10
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X40-10 is a genuine double-acting aluminum-barrel mini cylinder with a Ø20mm bore, a 40mm nominal stroke and a rear adjustable-stroke stopper — trim up to 10mm for a usable window of 30–40mm. Adjustable air cushion (both ends).
- BoreØ20 mm
- Stroke40 mm
- Adjustable30–40 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 MBLCJ20X40-10
The AirTAC MBLCJ20X40-10 is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and an adjustable air cushion at both ends. With a 20mm bore, it delivers 157N push and 132N pull force at 0.5MPa. The 10mm rear adjustment creates a usable 30-40mm stroke window, ideal for fine-tuning short-travel mechanisms.
Unlike the base MBLJ's fixed rubber bumper, the screw-tunable air cushion on this unit allows precise deceleration control for faster cycle speeds while protecting the end covers. The rear stopper sets the travel end but does not hold the load; the rod drifts without live air pressure. This PT-threaded SKU lacks a built-in magnet, so it cannot accept CMSG, DMSG, or EMSG position sensors.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X40-10 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X40-10 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø20 mm |
| Nominal stroke | 40 mm |
| Adjustable window | 30–40 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 MBLCJ20X40-10
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 20 | Bore size in mm. |
| ×40 | 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 MBLCJ20X40-10 Is Used
PCB Router Head Stop
Sets the Z-axis plunge depth on a light-duty PCB routing spindle, using the 30-40mm window to dial in the exact 40mm travel limit while the air cushion prevents impact bounce at 157N push force.
Micro-Clamp Actuator
Drives a small pneumatic clamp in an electronics assembly fixture, where the adjustable cushion slows the rod near the end of the stroke to protect delicate surface-mount components during clamping.
Label Dispenser Gate
Indexes a peel plate in a desktop label applicator, using the 10mm rear travel stopper to trim the plate position accurately without needing to physically move the entire cylinder mount.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X40-10 the Right Cylinder?
Stepping down is not an option as 20mm is the smallest bore. If you need more force, the 25mm bore provides 245N push at 0.5MPa. Choose this 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 cushioning combined with a variable stroke window. Remember, neither the cushion nor the adjuster acts as a lock to hold a load. Mounting is limited to Basic, FA, or LB styles (no SDB or back-cover options). For a direct replacement, match bore 20, 40mm stroke, 10mm adjust code, G1/8 port, PT thread, and no magnet.
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 MBLCJ20X40-10 FAQ
At 0.5MPa, the 20mm bore provides 157N push and 132N pull force. At 0.7MPa, push increases to 220N. The maximum theoretical force is 32kgf at 1.0MPa operating pressure.
No. This specific SKU lacks the built-in -S magnet, meaning it cannot trigger AirTAC CMSG (reed), DMSG, or EMSG (solid-state) sensor switches. You must select an MBLCJ model with the S suffix for position detection.
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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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