Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X175-20
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X175-20 is a genuine double-acting aluminum-barrel mini cylinder with a Ø20mm bore, a 175mm nominal stroke and a rear adjustable-stroke stopper — trim up to 20mm for a usable window of 155–175mm. Adjustable air cushion (both ends).
- BoreØ20 mm
- Stroke175 mm
- Adjustable155–175 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 MBLCJ20X175-20
The AirTAC MBLCJ20X175-20 is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and a tunable air cushion at both ends. A G1/8 port feeds the Ø8 mm carbon-steel rod, generating 157 N of push force at 0.5 MPa. The 20 mm rear adjustment lets you dial in the travel window precisely between 155 mm and 175 mm to hit a specific target. Because this specific SKU lacks the -S magnet suffix, it cannot accept a CMSG reed or DMSG electronic sensor switch for position detection.
The integrated adjustable air cushion uses screw-tunable deceleration to protect the end covers during rapid strokes, a distinct upgrade over the fixed rubber bumper found on the base MBLJ series. The riveted rolling-packed aluminum barrel and two-way grease-retaining piston seal maintain consistent lubrication over a 30-800 mm/s speed range. Remember that the rear stopper sets the travel end and the cushion only slows the load; neither component mechanically locks the rod in place.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X175-20 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X175-20 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø20 mm |
| Nominal stroke | 175 mm |
| Adjustable window | 155–175 mm (trim 20 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 MBLCJ20X175-20
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 20 | Bore size in mm. |
| ×175 | 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 MBLCJ20X175-20 Is Used
PCB Edge Routing
Deploys the 157 N push force to clamp bare PCB panels during multi-tool routing, using the 155-175 mm window to absorb panel thickness variations.
Micro-Pick Head Decel
Leverages the screw-tunable air cushion to soften the end-of-stroke impact on a 175 mm travel pick-and-place head, preventing vacuum nozzle misalignment.
Label Applicator Tamp
Drives a 175 mm tamp pad for applying serial labels to curved plastic bottles, relying on the rear stopper to set a precise 155 mm retracted rest position.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X175-20 the Right Cylinder?
If 157 N of push force is insufficient, step up to the 25 mm bore, which provides 245 N at 0.5 MPa; if you need less force and a smaller footprint, the 20 mm is the smallest available MBL series option. Choose this MBLCJ over the MBLJ when your application requires custom end-of-stroke deceleration rather than a fixed bumper, or over the MBLC when you need that 155-175 mm adjustable travel window rather than a fixed stroke length. For a direct replacement, match the 20 mm bore, 175 mm stroke, 20 mm adjust code, G1/8 PT thread, Basic mounting, and no-magnet configuration. Mounting is limited to Basic, FA flange, or LB foot styles; SDB pivot and back-cover options are not available for this series.
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 MBLCJ20X175-20 FAQ
At 0.5 MPa, the 20 mm bore provides 157 N push and 132 N pull force. At 0.7 MPa, push increases to 220 N. The maximum theoretical force is 32 kgf at 1.0 MPa, with an operating pressure range of 0.15-1.0 MPa.
The rear adjuster lets you mechanically trim the stroke by up to 20 mm, creating a usable travel window of 155 to 175 mm. The adjuster acts as a travel stop, and the separate adjustable air cushion only controls end-of-stroke deceleration; neither feature locks or holds the rod position without continuous air pressure.
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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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