Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X60-50S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X60-50S is a genuine double-acting aluminum-barrel mini cylinder with a Ø20mm bore, a 60mm nominal stroke and a rear adjustable-stroke stopper — trim up to 50mm for a usable window of 10–60mm. Adjustable air cushion (both ends).
- BoreØ20 mm
- Stroke60 mm
- Adjustable10–60 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X60-50S
The AirTAC MBLCJ20X60-50S is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and tunable air cushions at both ends. It delivers 157 N of push force and 132 N of pull force at 0.5 MPa. The 50 mm adjustment code allows you to trim the rear travel, creating a usable stroke window from 10 mm to 60 mm for exact endpoint positioning in tight spaces.
This SKU includes a built-in magnet (-S) for compatibility with AirTAC CMSG reed and DMSG/EMSG electronic sensor switches. Unlike the fixed rubber bumper on a standard MBLJ, the screw-tunable cushion valves on this unit allow you to regulate end-of-stroke deceleration, absorbing kinetic energy to protect the end covers during faster cycling. The Ø8 mm hard-chrome plated carbon-steel rod and riveted barrel ensure durable, leak-free operation.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X60-50S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X60-50S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø20 mm |
| Nominal stroke | 60 mm |
| Adjustable window | 10–60 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 MBLCJ20X60-50S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 20 | Bore size in mm. |
| ×60 | 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 MBLCJ20X60-50S Is Used
PCB Pick & Place
Drives a compact vacuum pick head for electronic component placement, using the 10-60 mm stroke window to dial in exact Z-axis descent without re-mounting hardware.
Micro-Clamp Actuation
Powers a small pneumatic clamping jaw in a dental fixture machining center, relying on the tunable air cushion to prevent impact damage when securing delicate titanium parts.
Label Applicator Tamp
Actuates a high-speed tamp pad for applying serial labels to pharmaceutical cartons, using the built-in magnet to trigger a DMSG sensor for precise dispense timing.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X60-50S the Right Cylinder?
Choose this 20 mm bore when you need 157 N of push force at 0.5 MPa within a confined footprint. If your application requires less force, stepping down is not an option as 20 mm is the smallest available size in this series. If you need significantly more power, step up to the 25 mm bore, which provides 245 N of push force at 0.5 MPa. Compared to the MBLJ, this MBLCJ variant is specifically chosen when adjustable air cushioning is required to smoothly stop heavier loads at the stroke ends.
The rear 50 mm adjuster acts strictly as a mechanical travel stop to set your 10-60 mm window; it does not lock or hold the load in place—use an external locking mechanism if position holding is required without live air. Mounting is limited to Basic, FA (flange), or LB (foot) styles, as no back-cover or SDB pivot options exist for this series. For a direct replacement, match the 20 mm bore, 60 mm stroke, 50 mm adjust code, G1/8 port, PT thread, and the -S magnet. Since the 60 mm stroke is well below the 300 mm maximum standard, side-load risks are minimal, but external guidance is still recommended for lateral 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 MBLCJ20X60-50S FAQ
At 0.5 MPa, this 20 mm bore cylinder provides 157 N of push force and 132 N of pull force. At 0.7 MPa, the push force increases to 220 N. The maximum theoretical force is 32 kgf at the 1.0 MPa operating pressure limit.
The 50 mm adjustable stroke is a rear mechanical stopper that lets you trim the usable travel window down to 10 mm; it sets the end position but does not lock the load. The adjustable air cushion is a separate needle valve that regulates exhaust flow to decelerate the piston near the end caps, preventing harsh impacts at high speeds.
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