472 Internal Retaining Ring is a standard fastener installed in a borehole groove for mechanical assembly to hold bearings, gears, bushing and other components in place to prevent axial movement. The DIN 472 standard developed by the German Institute of Standardization is widely used in mechanical manufacturing, automobiles, hydraulic equipment, industrial automation, etc.
1.Structural Characteristics of DIN 472 Internal Retaining Rings
472 retaining rings usually has an open fixed ring structure with two mounting holes for easy installation and removal with special clamps.
Main Structures include:
Ring Opener
Mounting Holes
Edge of Work
Elastic Locking Structure
After installation, due to its elasticity, the support ring and the pre-machined annular groove are reliably connected to realize reliable positioning.
2.472 Internal Retaining Rings Work?
When the support ring is installed in a groove inside the hole, its elastic resilience secures it to the groove, causing mechanical arrest.
Its main functions include:
prevent parts from axial detachment;
Ensure bearing position
Limit movement of components
Simplified assembly structure
This design achieves reliable fixation without increasing thread or welding.
3. Common Materials
Depending on the working environment, DIN 472 retaining rings can be manufactured of different materials.
Common materials include:
Carbon Sprung Steel
65Mn spring steel
304 stainless steel
316 stainless steel
Stainless steel retaining rings has good corrosion resistance, suitable for humid or corrosive environment.
4. Key Application Areas
DIN 472 retaining rings is widely used in various mechanical and industrial systems.
Common applications include:
Bearing fixation;
Gearbox
Electrical equipment
Hydraulic cylinders
Automotive transmission systems
Engineering machinery
Agricultural machinery
Due to convenient installation and low cost, it has become a standard fasteners for many mechanical structures.
