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The external circlips are installed on the grooved shaft to fix the axial movement of the parts. The inner diameter of this type of retaining ring is slightly smaller than the diameter of the assembly shaft. When installing, you must use circlip pliers to insert the plier's mouth into the plier's hole of the retaining ring and expand the retaining ring before putting it into the pre-processed shaft groove.
A drawing for a DIN 471 circlip arrives with "2B finish" written in the title block. The quote comes back quickly, the parts ship on time, and then inspection measures 0.6 µm Ra o...
A drawing that says only "steel hardened and tempered, 45–50 HRC" leaves three decisions open: which grade of steel, what tempering temperature the supplier actually held, and how...
A coastal wind site pulled a stainless circlip out of an aluminum gearbox bore after 14 months of service. The circlip still looked new. The aluminum groove behind it was covered ...
A 5 MW coastal solar tracker lost three bearing positions in its eighteenth month of service. The 304 stainless circlips holding each pillow block had pitted through along the gro...
Anhui Ningguo Dongbo Fastener Co., Ltd. produces external circlips for grooved shafts, preventing axial movement of bearings, gears, pulleys, and other mounted components. Our range covers DIN 471, DIN 983, M1408 AV, N1402, DIN 6799, and M1800 profiles, with materials including carbon spring steel and stainless steel. We supply standard and custom configurations from our factory in Ningguo, China, serving automotive, construction machinery, energy, and power tool applications.
External circlips are installed by expanding the ring with circlip pliers and seating it into a pre-machined shaft groove. The ring's inner diameter is slightly smaller than the shaft diameter, creating an interference fit that maintains position under vibration and load. Our engineering team supports size selection, material choice, and surface treatment to match your operating conditions.
We manufacture six core external circlip types, each suited to different shaft sizes, load directions, and assembly methods. The table below outlines the main profiles and their typical applications.
For bore applications, we also produce Internal Circlips and Snap Rings to complete your retaining ring system.
| Product Type | Standard / Model | Nominal Size Range | Typical Application |
| External Circlips for Shafts | DIN 471 | 8 mm – 200 mm | General shaft retention, gearboxes, motors |
| External Circlips with Lugs | DIN 983 | 16 mm – 100 mm | High-impact axial blocking, heavy vibration |
| Reverse Retaining Ring | M1408 AV | 10 mm – 100 mm | Reverse shaft fixing, anti-slip |
| External Beveled Retaining Ring | N1402 | 15 mm – 100 mm | Chamfered grooves, automated assembly |
| External E-Clip | DIN 6799 | 1.2 mm – 24 mm | Small shafts, electronics, appliances |
| Crescent E-Clip | M1800 | 3 mm – 25 mm | Compact assemblies, tight spaces |
We select materials based on load, corrosion exposure, and temperature. Standard options include carbon spring steel (65Mn, C67S, C75S) and stainless steel (2Cr13, 304, 1.4122). Surface treatments such as phosphating, zinc plating, zinc-nickel plating, Dacromet, and electrophoresis are available to meet specific corrosion resistance requirements.
Each external circlip is defined by nominal size (d1), thickness (S), inner diameter (d3), groove diameter (d2), and load capacities (FN, FR). Our product tables provide these values to support groove design and assembly. For example, a DIN 471 circlip with d1 = 50 mm has a thickness of 2 mm, inner diameter of 45.8 mm, and groove bearing capacity of 38 kN.
We also supply rings with lugs (DIN 983) that offer higher axial spring force and compensation clearance for automated assembly. Reverse retaining rings (M1408 AV) are designed for opposite elastic deformation to secure reverse shafts.
Our factory operates a full-process production system, from raw material precision rolling to final packaging. We are IATF 16949, ISO 14001, and CNAS certified. Each production batch undergoes dimensional checks, hardness testing, and load verification. For finished products, we perform full inspection according to customer requirements and international standards.
Our testing center is equipped for material element analysis, mechanical properties, hardness, and metallography. We also use multifunctional three-coordinate measuring machines and electron microscope analyzers. This ensures that external circlips meet the specified tolerances and performance criteria.
We develop and produce external circlips according to customer drawings or samples. Custom options include non-standard dimensions, alternative materials, special surface treatments, and unique packaging. Our engineers collaborate with you to optimize the design for your application, whether you need a standard DIN part or a fully customized solution.
For non-standard stamping parts, we offer Non-standard Stamping Parts and Product Customization services to meet specific form, fit, and function requirements.
To prepare an accurate proposal, we need the following project details:
Providing these details allows us to recommend the most suitable external circlip and provide a timely quotation.
DIN 471 is a standard external circlip for shafts, while DIN 983 features lugs that provide higher axial spring force and compensation clearance. DIN 983 is often used in high-vibration or automated assembly applications.
Yes. We regularly manufacture external circlips in stainless steel grades such as 304, 2Cr13, and 1.4122, as well as carbon spring steel like 65Mn and C67S.
We offer phosphating (zinc/manganese), mechanical galvanizing, colored zinc, Dacromet, Gumet, electrophoresis, galvanized nickel, and passivation. The choice depends on corrosion resistance and appearance requirements.
Selection depends on shaft diameter, groove dimensions, and load. Our product tables list nominal size, inner diameter, thickness, and load capacities. Our engineers can assist with sizing based on your application data.
Yes. We develop and produce custom external circlips from drawings or samples, including non-standard dimensions, materials, and surface treatments. Contact us with your specifications for a tailored solution.
Our annual production capacity is 3.5 billion pieces across all product lines. We maintain a full-process production system to ensure high quality and short delivery times.
No. 110, West Outer Ring Road, Ningguo economic and Technological Development Zone, Anhui.
+86-563-4186973 (Export Business)
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