CJ1 Series Miniature Pin Cylinder (Ultra-Small Micro Air Cylinder φ2.5 / φ4mm)

Brand: SOLH by Richge Technology 

Product Overview

     SOLH CJ1 series are ultra-miniature single / double acting pin-type cylinders. Core merits: ultra-compact tiny outline, lightweight construction, low output thrust and rapid response. Designed for precision driving within confined space, micro load push & pull tasks, miniature stations for electronics & 3C automation. It is the core actuator for micro automation applications.

Core Structure & Design Features

     -- Drive Types: Single acting (spring return) & Double acting.Bore options: φ2.5 (single acting exclusive); φ4 (available for single / double acting).

     -- Structural Characteristic: Round body, slender pin piston rod, no built-in cushion, basic end-thread mounting. φ4 model outer body diameter only 4mm, net weight as low as several grams.

     -- Dynamic Performance: Cushion-free structure enables fast piston response. Operating speed: 50~500mm/s, suitable for high-frequency short-stroke movements.

     -- Material & Sealing: Hard anodized aluminum body, NBR seal components, oil-free design, compatible with clean or slightly oily workshop environments.

     -- Flexible Installation: Basic version with threads on both ends for axial fixation. Port orientation on rod-side head can be adjusted ±90°, convenient for tubing routing in cramped layouts.

Complete Model Coding Rule

   1. Model Example：CJ1B4-10SU4

   2. Standard Order Reference Examples

     -- CJ1B2-10SU4：Bore 2.5, stroke 10, single acting spring return

     -- CJ1B4-15U4：Bore 4, stroke 15, double acting

     -- CJ1B4-5SU4：Bore 4, stroke 5, single acting spring return

Universal Core Technical Specifications (0.5MPa Supply Pressure)

Core Competitive Advantages

   1. Ultra-miniature footprint for tight installation space

     -- Minimum bore φ2.5, outer body diameter φ4, weight only 2~3.5g, easily integrated into ultra-compact equipment layouts.

   2. Low thrust precision linear driving

     -- Output thrust ranges 0.64~6.3N @0.5MPa, ideal for micro loads ≤100g, avoids impact damage to delicate small workpieces.

   3. High-frequency rapid response

     -- Cushion-free structure delivers fast actuation, supports ≥300 cycles per minute short-stroke operation to boost production efficiency.

   4. Oil-free operation & long service life

     -- NBR sealing system supports oil-free compressed air for clean production environments; mechanical service life ≥3 million cycles.

   5. Adjustable port direction & simple assembly

     -- Rod-side air port rotatable ±90°. Dual-end external threads allow direct axial locking without extra mounting brackets, simplifying on-site commissioning.

Mounting Options & Typical Industrial Applications

   1. Mounting Forms

     -- Axial thread mounting: Directly screw both ends onto equipment for straight push-pull motion

     -- Side bracket mounting: Optional miniature bracket for lateral installation, suitable for swing or side driving

   2. Typical Application Scenarios

     -- 3C & Electronics: Mobile button durability testing, micro plastic part clamping, chip ejection & positioning

     -- Precision Instrumentation: Mini valve switching, fiber optic positioning, fine adjustment mechanisms

     -- General Automation: Micro component loading/unloading, lightweight label peeling, miniature jig actuation

     -- Medical Equipment: Small instrument telescopic motion, micro fluid propulsion, precision positioning assemblies

3-Step Fast Selection Guide

   1. Bore selection based on payload

     -- φ2.5 for load ≤50g；φ4 for load 50~100g. Reserve minimum 50% safety margin due to low thrust characteristics.

   2. Stroke confirmation

     -- Select stroke according to required travel distance; prioritize shorter strokes for stable high-frequency operation.

   3. Action mode selection

     -- Single acting (with suffix S): Unidirectional push/pull with spring reset for power-fail safety design

     -- Double acting: Bidirectional precise linear driving without return spring

One Sentence Summary

     SOLH CJ1 ultra-miniature pin pneumatic cylinder is available in single spring return and double acting variants with φ2.5 / φ4 bore, ultra-lightweight compact design and adjustable air port direction, providing low-thrust precision micro linear motion, widely adopted for 3C testing, precision instruments and medical miniature automation equipment.