DIN 472 Internal Circlip German Standard Bore Retaining Snap Ring
Keywords：
DIN 472, Internal Circlip, Internal Retaining Ring
Overview
DIN 472 internal retaining ring is a standardized industrial fastener formulated by German Industrial Standard, specially designed for bore internal groove installation. Different from DIN 471 shaft circlips, DIN 472 internal circlips are installed inside pre-machined holes to provide reliable axial limiting and anti-loosening for internal components. Equipped with two reserved lug holes for professional circlip pliers operation, the ring can be compressed for quick installation, and rebounds tightly to fit the bore groove after assembly. It effectively restrains axial movement and vibration offset of internal parts during high-speed operation and alternating load working conditions, ensuring long-term stable and reliable operation of mechanical equipment.
Material & Surface Treatment
All DIN 472 internal circlips are fully produced in accordance with EN10132-4 industry standard. Carbon steel versions adopt high-quality 65MN and C67S spring steel, processed with integral heat treatment for uniform hardness, stable elastic recovery and excellent anti-fatigue performance. Phosphating treatment is applied for carbon steel surface, delivering effective wear resistance and long-term rust protection. Stainless steel versions adopt premium SS420 stainless steel with strict burr-free finishing, ensuring ultra-smooth surface, high hardness and reliable corrosion resistance for precision assembly and harsh working conditions.
Application
DIN 472 internal circlips are widely used for internal bore positioning and anti-loosening in automotive parts, motorcycle components, gearboxes, reduction motors, hydraulic & pneumatic systems, pump equipment, compressors, construction machinery, home appliances and precision automation equipment, mainly used to fix bearings, inner sleeves and other internal transmission parts.
| Standard Compliance | Strictly manufactured per DIN 472 and EN10132-4 standards with precise tolerance, perfectly matching standard bore grooves worldwide. |
| Premium Material Performance | 65MN & C67S carbon steel offers outstanding elasticity and anti-fatigue capacity; SS420 stainless steel provides high hardness and corrosion resistance. |
| Professional Surface Craft | Carbon steel with phosphating anti-rust treatment; stainless steel with 100% burr-free finish, meeting precision machinery assembly standards. |
| Easy & Fast Installation | Compressible design with reserved lug holes enables quick assembly and disassembly, saving labor cost and installation time. |
| Compact & Stable | Miniature structure saves installation space, maintaining stable axial limiting performance under high speed and vibrating working conditions. |
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Frequently Asked Questions
product
What core advantages does standard DIN471 external circlip have over non-standard snap rings?
Produced per DIN471 & EN10132-4, it features precise dimension matching standard grooves. Made of 65Mn/C67S, it delivers outstanding anti-fatigue performance and resists loosening under long-term vibration.
How to maintain DIN472 when elastic weakness appears during equipment inspection?
Fatigued circlip cannot be restored; replace with brand-new DIN472 and forbid repeated usage of deformed old parts.
Standard installation operation of DIN6799 circlip?
Align E opening with shaft groove and press down vertically with flat screwdriver until fully seated.
Benefit of phosphated surface for DIN2093 during component service?
Phosphating improves rust and wear resistance to extend service life of DIN2093 inside hydraulic cylinders and high-pressure valves.
Self-locking fixing principle of DIN1481 slotted spring pin?
Slotted body shrinks during pressing and rebounds to expand against hole wall, forming radial preload for self-lock positioning.
business
How to select material of ISO8752 reasonably for different working environments?
Choose 65Mn black oxide carbon steel for dry indoor machinery, auto chassis and general reducer; switch to stainless steel ISO8752 for damp, oily and corrosive working conditions like water pumps and food equipment.
Correct disassembly method for DIN1 during mould maintenance?
Eject DIN1 from opposite end via pin punch; violent hammering is forbidden to avoid bore deformation.
Solution for stuck DIN7 taper pin during equipment overhaul?
Knock out from big end; drill and replace new DIN7 if severely rust locked.
Heat treated quenched steel strip includes blued strip and polished strip, what are respective advantages of two surface types?
All heat treated quenched steel strip is fully quenched with high hardness and stable elasticity. Blued steel strip forms uniform blue oxide layer for natural rust resistance with high cost performance; polished steel
What are the core advantages of annealed steel strip compared with semi-hard strip and heat treated quenched steel strip?
Made from 65Mn, C67S and other spring steel grades, annealed steel strip gets full full-annealing stress relief treatment. It owns the best ductility among three types of steel strips, hardly cracking during bending,
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