CRQ2 Series Ultra-Thin Rack & Pinion Rotary Cylinder | Zero Backlash Compact Swing Cylinder

Brand: SOLH by Richge Technology

1. Product Overview & Core Advantages

     The SOLH CRQ2 series is an ultra-thin flat rack & pinion rotary cylinder featuring dual-piston zero-backlash structure. With ultra-low body height and integrated flange mounting design, it supports 90°/180°/360° wide-range swing angles and covers bore sizes from φ10 to φ40. Optimized for space-limited equipment layouts, this cylinder delivers high-precision and stable rotary performance for light & medium-duty indexing, flipping and rotating stations, serving as the preferred compact rotary solution for 3C, packaging and medical automation equipment.

2. Complete Technical Specifications

  2.1 Basic Parameters

     • Bore Size: φ10/φ15/φ20/φ30/φ40 (Ultra-thin flat structure)

     • Operation Mode: Double-acting rack & pinion drive

     • Working Pressure Range: 0.15~0.7MPa; φ20/φ30/φ40 up to 1.0MPa

     • Proof Pressure: 1.05MPa

     • Ambient Temperature: 0℃~60℃ (ice-free environment)

     • Lubrication: Oil-free self-lubricating operation

     • Buffer Configuration: φ10/φ15 with built-in rubber buffer only; φ20/φ30/φ40 with dual rubber buffer + optional adjustable air buffer (suffix C)

     • Angle Adjustment: Standard ±5° fine adjustment via end bolts

     • Magnetic Compatibility: CDRQ2 built-in magnetic ring, compatible with D-M9B / D-A93 series switches

  2.2 Theoretical Torque Table (@0.5MPa, N·m)

  2.3 Standard Swing Angle & Adjustable Range

     • 90° Swing: Adjustable range 80°~100°

     • 180° Swing: Adjustable range 170°~190°

     • 360° Extended Swing: Adjustable range 350°~370° for special full-rotation demands

  2.4 Port Size Specification

     • φ10/φ15: M5×0.8

     • φ20/φ30/φ40: Standard Rc1/8; Optional G1/8 & NPT thread

3. Model Naming Rules & Order Examples

  1. Complete Model Structure: CDRQ2BS20-180C

  2. Typical Order Examples

     • Standard Non-Buffer Model: CRQ2BW15-90 (Basic type, dual shaft, φ15 bore, 90° swing, non-magnetic, rubber buffer)

     • High-Precision Buffer Model: CDRQ2BS40-180C (Magnetic ring equipped, single shaft, φ40 bore, 180° swing, air buffer)

4. Structural Principle & Core Strengths

  4.1 Internal Structure & Working Principle

     The CRQ2 series adopts symmetric dual-piston double rack meshing structure. Compressed air drives dual pistons for synchronous linear motion, which pushes the gear rack to output stable rotary torque. The integrated flat body comes with built-in buffer mechanism, end angle adjustment bolts, single-side piping interface and dual-side magnetic switch grooves. The symmetric force structure eliminates shaking and backlash during operation, achieving ultra-stable high-precision rotary positioning.

  4.2 Unique Core Advantages

     • Ultra-Thin Flat Body: Extremely low body height (17~37mm), the cylinder body can be directly used as a flange, eliminating extra mounting brackets and greatly saving vertical installation space.

     • Zero Backlash Design: Double-rack full meshing structure realizes zero clearance rotation, ensuring high repeat positioning accuracy and jitter-free start-stop operation.

     • Neat Piping & Wiring: Single-side air interface and same-side dual switch grooves simplify on-site wiring and piping layout for cleaner equipment structure.

     • Precise Angle Fine-Tuning: Standard ±5° adjustable swing angle adapts to diverse precise positioning requirements.

     • Diversified Shaft Options: Optional single shaft (universal) and dual shaft (bidirectional linkage) to match various automated connection modes.

5. Installation & Selection Guidelines

  5.1 Installation Mode

      Basic B Type: The bottom of the cylinder body supports direct mounting with reserved positioning holes. The integrated flange design requires no additional fixing accessories, featuring fast installation and high positioning accuracy.

  5.2 Core Selection Criteria

     • Space Limitation Priority: Choose CRQ2 ultra-thin series for vertical height limited scenarios; select MSQ/HRQ series for sufficient installation space.

     • Precision & Backlash Demand: Rack & pinion CRQ2 for zero-backlash high-precision positioning; vane-type CRB2 for low-cost large-angle light-load rotation.

     • Swing Angle Confirmation: Standard 90°/180° for conventional flipping/positioning; 360° extended type for full-circle rotation working conditions.

     • Buffer Matching: Select C air buffer for high-speed and medium-heavy load operation; standard rubber buffer meets low-speed light-load demands.

     • Signal Feedback Demand: Choose CDRQ2 magnetic ring version for PLC position detection and automated linkage control; CRQ2 non-magnetic version for simple rotary motion without signal feedback.

6. Typical Application Scenarios

     • 3C & Electronics Industry: PCB board flipping, chip sorting, small fixture rotation and precision component positioning.

     • Packaging & Printing Equipment: Label swinging, box sealing positioning, baffle deflection and continuous packaging line directional switching.

     • Compact Automation Stations: Miniature valve switching, precise indexing positioning and rotary operation in narrow equipment space.

     • Medical & Precision Machinery: Small manipulator rotation, precision medical accessory flipping and mini automated rotary platforms.

7. CRQ2B vs CDRQ2B Comparison Table

One Sentence Summary

     The SOLH CRQ2 series ultra-thin zero-backlash rotary cylinder features flat integrated flange design, multi-angle adjustable rotation and space-saving installation, providing high-precision, stable and compact rotary solutions for light & medium-duty narrow-space automated flipping and indexing stations.