DNC Series Tie-Rod-Free Profile Standard Cylinder | ISO 15552 High-Precision Pneumatic Cylinder

Brand: SOLH by Richge Technology

1. Product Overview & Core Structural Features

     The SOLH DNC series is a high-end tie-rod-free square profile double-acting standard pneumatic cylinder, fully compliant with ISO 15552 (former ISO 6431) and VDMA 24562 international standards. It features bidirectional PPV adjustable air cushioning, high rigidity profile structure, excellent torsion and deflection resistance, ultra-high repeat positioning accuracy and ultra-long service life. As a mainstream upgraded replacement for traditional tie-rod SC cylinders, it is widely applied in high-end automation, equipment export projects and standard interface matching scenarios with strict precision and stability requirements.

  1.1 Global Universal Standard & Strong Interchangeability

     Manufactured in strict accordance with ISO 15552 and VDMA 24562 industrial standards, all mounting dimensions and interface specifications are globally universal. It achieves complete interchangeability with mainstream international brand standard cylinders, perfectly matching European standard equipment and supporting zero-modification replacement and batch upgrading of automated production lines.

  1.2 Tie-Rod-Free High-Rigidity Profile Structure

     Adopting integrated square aluminum alloy profile cylinder tube with no exposed tie rods. The overall structure boasts high rigidity, neat appearance and outstanding corrosion resistance. Built-in standard magnetic groove on both sides of the cylinder body allows direct installation of SME-8 and SMT-8 series magnetic switches without extra brackets, realizing accurate piston position detection and signal feedback.

  1.3 Diversified Motion & Special Function Options

     The standard configuration is single-rod double-acting bidirectional drive for universal linear reciprocating motion. Multiple optional special structures meet diverse working condition demands: S2 double rod design for synchronous operation and doubled stability; Q square piston rod for anti-torsion precision positioning; S20 hollow piston rod for special ventilation and lightweight application scenarios.

  1.4 Premium PPV Adjustable Buffer System

     Equipped with standard dual-end PPV adjustable air cushion + elastic buffer pad. The buffer stroke increases with cylinder bore size, effectively reducing impact and noise during high-speed and heavy-load operation. It ensures ultra-stable cylinder movement, avoids end collision damage, and greatly improves equipment operating stability and component service life.

  1.5 Low-Friction Long-Life Sealing System

     Adopting bidirectional Y-type composite seal with built-in oil storage compensation structure. It features ultra-low starting pressure of 0.06MPa, stable low-friction operation and excellent wear resistance. Supporting oil-free maintenance operation with a cumulative operating stroke up to 4000km, it effectively reduces later maintenance costs and adapts to long-term high-frequency continuous working conditions.

2. Complete Model Naming Rules & Order Examples

  1. Typical Model Structure: DNC-50-200-PPV-A-Q

  2. Standard Order Example

     • Standard Universal Model: DNC-63-150-PPV-A (63mm bore, 150mm stroke, dual-end adjustable air buffer, built-in magnetic ring)

3. Core Technical Parameters (Standard Type)

4. 0.6MPa Theoretical Thrust & Tension Reference Chart (Single Rod)

Note: The selection safety factor shall be ≥2; enlarge the bore size by 1~2 grades or add guiding mechanism for eccentric load and cantilever working conditions.

5. Mounting Accessories & Derivative Models

  5.1 Universal ISO 15552 Standard Mounting Types

     • FA/FB (Front/Rear Flange): Vertical fixed mounting for stable heavy-load positioning

     • CA/CB (Single/Double Clevis): Hinged swing mounting for linkage and flipping mechanisms

     • LB (Foot Bracket): Horizontal base fixing for stable linear operation

     • TC (Trunnion Mount): Middle pivot mounting for flexible swing working conditions

     • L (Lateral Mount): Side fixed installation for narrow space layout

     All accessories are fully interchangeable with SI, SE, DSBA and other ISO standard cylinders, featuring strong versatility and easy replacement.

  5.2 Core Derivative Series

     • DNCB: Basic standard model, universal for conventional automation scenarios

     • DNC-KP: With clamping unit, arbitrary position locking for safety pressure maintaining and anti-offset working conditions

     • DNC-EL: End mechanical locking, reliable locking at fully extended/retracted position

     • DNC-Q: Square anti-torsion piston rod, anti-rotation accuracy up to ±0.1° for high-precision positioning

     • DNC-S2: Double piston rod design, bidirectional synchronous movement with excellent stability

     • DNC-V: Integrated solenoid valve, valve-cylinder integrated structure, space-saving and simplified piping

6. Application Scenarios & DNC vs SC Selection Comparison

  Priority Selection Scenarios for DNC Series

     • Export equipment and European standard projects requiring ISO standard interface interchangeability

     • High-speed long-cycle operation scenarios pursuing ultra-long service life and low maintenance (cumulative stroke up to 4000km)

     • Compact equipment layout requiring tie-rod-free neat appearance and multi-cylinder side-by-side installation

     • High-precision positioning, anti-torsion and heavy-load impact buffer demanding working conditions

     • High-end automation industries including automotive, electronics, packaging and machine tool equipment

7. 3-Step Quick Selection Guide

     1. Bore Selection: Confirm bore size according to actual horizontal/vertical thrust and load, reserve more than 50% safety margin; enlarge 1~2 bore grades or add guiding structure for eccentric load and cantilever conditions.

     2. Stroke Selection: Actual working stroke plus 20~50mm safety margin; maximum optional stroke up to 2000mm.

     3. Functional Configuration: Standard equipped with PPV adjustable buffer + A magnetic ring; select Q for anti-rotation demand, S2 for double rod demand, KP/EL for locking and safety positioning demand.

One Sentence Summary

     The SOLH DNC ISO 15552 tie-rod-free profile cylinder features high rigidity, ultra-high repeat precision, adjustable air buffer, long service life and diversified derivative functions, serving as a high-end universal standard cylinder solution for high-precision, export-grade and long-life automated equipment.