Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X50-20S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X50-20S is a genuine double-acting aluminum-barrel mini cylinder with a Ø40mm bore, a 50mm nominal stroke and a rear adjustable-stroke stopper — trim up to 20mm for a usable window of 30–50mm. Adjustable air cushion (both ends).
- BoreØ40 mm
- Stroke50 mm
- Adjustable30–50 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- 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 MBLCJ40X50-20S
The AirTAC MBLCJ40X50-20S is a compact double-acting mini cylinder featuring a single rod and a robust Ø16 mm carbon-steel piston. It generates 628 N of push force at 0.5 MPa, making it well-suited for mid-weight manipulation. A rear stroke adjuster lets you trim up to 20 mm of travel, creating a usable end-position window of 30 to 50 mm for precise mechanical timing.
Unlike the standard MBLJ bumper version, this model features a screw-tunable adjustable air cushion at both ends. This allows you to dial in end-of-stroke deceleration for faster cycling while protecting the aluminum end covers from impact. The riveted rolling-packed barrel and grease-retaining two-way piston seal ensure long service life, while the built-in magnet (-S) supports CMSG reed and DMSG/EMSG electronic sensors for position detection.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X50-20S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X50-20S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø40 mm |
| Nominal stroke | 50 mm |
| Adjustable window | 30–50 mm (trim 20 mm) |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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 500 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 MBLCJ40X50-20S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 40 | Bore size in mm. |
| ×50 | 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 MBLCJ40X50-20S Is Used
PCB Router Z-Axis
Leverages the 628 N push force to plunge a spindle, using the 30-50 mm stroke window to set exact cutting depth on varying board thicknesses.
Stainless Steel Stamper
Uses the tunable air cushion to decelerate the 880 N peak force at 0.7 MPa, preventing deflection when marking heavy-gauge metal tags.
Bottling Line Diverter
Relies on the DMSG solid-state sensor signal and compact riveted barrel to rapidly sort glass containers without cracking the glass.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X50-20S the Right Cylinder?
If your application requires less force, stepping down to the 32 mm bore yields 402 N of push at 0.5 MPa; conversely, stepping up to the 50 mm bore provides 981 N for heavier payloads. Choose this MBLCJ over the MBLJ when you need active deceleration rather than a fixed rubber bumper, or over the MBLC when you need to fine-tune the stroke end-point. Remember that the rear adjuster is a travel stop, not a lock, and the air cushion only decelerates; neither will hold a load in place without live air pressure. Mounting is limited to Basic, FA flange, or LB foot options, as no SDB pivot or back-cover code applies. For an exact replacement, match the 40 mm bore, 50 mm stroke, 20 mm adjust code, G1/4 port, PT thread, and the -S 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 MBLCJ40X50-20S FAQ
At 0.5 MPa, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. At 0.7 MPa, push increases to 880 N. The maximum theoretical force is 128 kgf at 1.0 MPa.
No, the rear adjuster is a travel stop that sets the end position within a 30-50 mm window; it does not lock the load. The adjustable air cushion only controls deceleration speed. Neither feature holds position without live air pressure.
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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