CJ2K Series Stainless Steel Mini Cylinder｜Non-Rotating Rod Type

Brand: SOLH by Richge Technology

Product Overview

     SOLH CJ2K series is non-rotating rod stainless steel mini cylinder, derived from CJ2 mini cylinder family. Core feature: Hexagonal anti-rotation piston rod integrated with internal guide structure to prevent piston rod spinning during extension & retraction. Ideal for precision stations where the end fixture must maintain fixed angular position. Adopting 304 stainless steel barrel, compact and lightweight. Supports three operation modes: double acting, single acting spring return, single acting spring extend. Bore sizes: Φ10, Φ16. Fully dimensionally interchangeable with imported original CJ2K. Optional built-in magnetic ring compatible with M9BW magnetic switches. Widely adopted in small automation, 3C equipment, precision tooling and jig pushing applications.

Complete Model Coding Explanation

   1. Model Example：CJ2KB10-30SZ-M9BW-B

   2. Ordering Example

    CJ2KB10-30SZ-M9BW

     -- Non-rotating mini cylinder, basic mounting, bore 10, stroke 30, single acting spring return, built-in magnetic ring, equipped with M9BW magnetic switch.

Core Structure & Performance Advantages

   1. Hexagonal piston rod mechanical anti-rotation (Core Advantage)

     -- Hexagonal cross-section piston rod matched with front guide bushing to restrict circumferential rotation.

     -- Anti-rotation accuracy: Φ10 ≤ ±1.5°; Φ16 ≤ ±1°.

     --  ✅ Solve deflection problems caused by free torsion of ordinary round piston rod during reciprocation.

   2. 304 stainless steel barrel, compact slim outline

     -- Rust resistance and moisture-proof performance; cylindrical structure saves installation space inside compact equipment cabinets.

   3. Multiple operation modes available

     -- Double acting: Air supply on both sides, stable thrust, preferred for continuous mass production

     -- S Spring return: Extend when energized, auto retract after power loss

     -- T Spring extend: Retract when energized, auto extend after power loss to meet safety reset requirements

   4. Diversified mounting options

     -- Basic type, foot mount L, flange F, double clevis D. Supports vertical, horizontal and inverted assembly.

   5. Oil-free operation

     -- Pre-coated long-lasting grease inside, compatible with dry oil-free compressed air for stable long-term operation.

   6. Optional magnetic position detection

     -- Z version equipped with built-in magnet, cooperate with M9BW switch to send extend/retract in-place signal to PLC for automatic interlock control.

   7. Standard rubber cushion

     -- Built-in rubber cushion pads on both ends to absorb piston impact and reduce operating noise.

Standard Technical Specifications

   1. Theoretical Output Thrust @0.5MPa (N)

Selection Comparison: CJ2K Non-Rotating VS Standard CJ2 Round Rod

    1. ✅ Prefer CJ2K under these working conditions

     -- Flat jigs, shift forks or positioning pins mounted on rod end, load deflection is prohibited;

     -- Small indexing tooling, pushing workpieces inside guide grooves;

     -- Linear feed of camera & inspection fixtures that require constant angle;

     -- Flat clamps connected to piston rod, torsion will cause material jamming or positioning failure.

   2. ❌ Standard CJ2 acceptable scenarios

     -- Simple ejection, pushing round workpieces, no angular restriction on load, cost priority.

3-Step Selection Guide

   1. Confirm anti-twist requirement

     -- Flat/square fixture with positioning groove → Must choose CJ2K non-rotating version.

   2. Select operation mode

     -- Continuous reciprocating & maximum thrust → Double acting (without S/T suffix)

     -- Extend with air, auto retract after shutdown → S spring return

     -- Retract with air, auto eject after shutdown → T spring extend

   3. Configure sensor & mounting

     -- PLC position feedback required: Add suffix Z (built-in magnet) + M9BW magnetic switch

     -- Mounting selection: Flange F for end face installation; Foot L for side frame mounting; Double clevis D for hinged swing motion

Typical Application Scenarios

     -- 3C Automation: PCB flat jig pushing, connector positioning in slots

     -- Optical Inspection Equipment: Camera linear feeding with fixed detection angle

     -- Small Tooling & Fixtures: Flat workpiece ejection, material feeding in guide slots

     -- Packaging Machinery: Flat carton positioning, small label pushing

     -- Laboratory automation & humid workshops (stainless steel anti-rust barrel)

Standard Pneumatic Circuit Reference

   1. Double Acting Push Circuit

     -- AFC Air Filter Regulator Lubricator → 4V210-06 5/2 Solenoid Valve → PU4 Tubing → CJ2KB16-60Z-M9BW

   2. Single Acting Spring Reset Circuit

     -- AR Pressure Regulator → 3V210 3/2 Solenoid Valve → CJ2KB10-30SZ

Precautions for Use

     -- Avoid excessive radial side load on piston rod. Lateral force accelerates guide bushing wear and reduces anti-rotation precision.

     -- Install end load coaxially to minimize torsion moment.

     -- Install AF air filter upstream to prevent dust jamming the guide assembly.

     -- Avoid long-term high-speed operation under full 0.7MPa pressure; make full use of rubber cushion.

     -- Fluorine rubber seal version customizable for strong acid & alkali corrosive environments.

One Sentence Summary

     SOLH CJ2K stainless steel non-rotating hexagonal rod mini cylinder provides precise anti-twist linear motion, available in double/single acting variants with multiple mounting styles, compatible with M9BW magnetic switches, perfect actuator for 3C testing, optical inspection and precision jig positioning stations where angular deviation is forbidden.