Q4306 internal circlip (also known as internal retaining ring) is a precision fastening component manufactured in accordance with Q430 automotive standard and GB/T 893 international standard. It is designed for axial positioning of components such as bearings, gears, bushings, and pistons within bore applications.
Though compact in size, this circlip plays a critical role in preventing axial movement during operation, ensuring stable transmission and improving overall equipment reliability.
Key Features
Standardized Design & High Compatibility
- Fully compliant with Q430 and GB/T 893 standards
- Precise dimensions with excellent interchangeability
- Direct replacement without modification
High-Quality Material
Made from premium 65Mn spring steel, offering:
- High elasticity
- Excellent toughness
- Strong fatigue resistance
Heat Treatment Process
Quenching and tempering treatment (HRC 44–51) ensures:
- Uniform hardness
- Long service life
- Resistance to deformation and breakage
Precision Manufacturing
- Precision stamping with tight tolerance control
- Smooth edges, no burrs or scratches
- Perfect fit into groove for secure positioning
Surface Treatment Options
- Black oxide
- Phosphating
- Zinc plating
Providing excellent:
- Corrosion resistance
- Anti-rust performance
- Suitability for oil, moisture, and mild corrosive environments
Working Principle
The circlip’s outer diameter is slightly larger than the bore in its free state. When installed into the groove, it compresses and firmly grips the groove wall through its elasticity, creating strong axial retention force and preventing displacement or detachment.
Core Functions
- Axial positioning of internal components
- Prevents axial movement and vibration damage
- Ensures stable and reliable transmission
- Improves equipment safety and performance
Product Advantages
- Strong retention force, no loosening or slipping under vibration
- Easy installation with standard circlip pliers
- Compact structure, saves installation space
- Reduces need for complex components like nuts or shoulders
- High durability for long-term use
- Excellent interchangeability across multiple applications
- Ready stock for bulk supply
Technical Specifications
- Product Name: Internal Circlip / Retaining Ring for Bore
- Model: Q4306
- Standard: Q430 / GB/T 893
- Material: 65Mn Spring Steel
- Hardness: HRC 44–51
- Process: Precision Stamping + Heat Treatment
- Surface Finish: Black / Phosphated / Zinc Plated
Application Scenarios
- Heavy truck & light truck gearbox bore positioning
- Bearing housing retention
- Hydraulic cylinder internal fixing
- Engineering machinery assembly
- General mechanical internal bore applications
Compatible Components
- Bearings
- Gears
- Bushings
- Shafts & sleeves
- Pistons
Installation Advantages
- Equipped with standard plier holes for quick installation/removal
- No complex tools required
- Suitable for fast repair and batch assembly
- Reduces labor time and operational cost
Supply & Service
- Large inventory with stable supply
- Support bulk orders and OEM customization
- Professional export packaging
- Technical support and after-sales service
Q4306 internal circlip is a small but essential component for reliable axial positioning in mechanical systems. With high-quality material, precision manufacturing, and excellent durability, it ensures stable operation, reduces maintenance costs, and improves assembly efficiency—making it an ideal choice for automotive and industrial applications.