Product Parameters
| Item | Specification |
|---|---|
| Series | Inch (ASME B27.7), Metric (DIN 471/472) |
| Material | Carbon Spring Steel, 302 Stainless, Beryllium Copper |
| Installation | Pliers-assisted, self-locking |
| Style | Bent-wire, spiral wound |
| MOQ | 100 pcs |
description
External retaining rings sit in a groove on a shaft and shoulder bearings, gears, pulleys, and other rotating components to prevent axial movement. The ring flexes during installation into the groove and then maintains constant spring force throughout service - without needing secondary fasteners that would add parts and assembly time. Carbon spring steel per ASTM A228 or A229 handles cyclic loading where the ring must flex repeatedly. 302 stainless is the choice for food processing, medical devices, and marine hardware where carbon steel would corrode. Beryllium copper is used in spark-free tools and near sensitive electronic equipment where non-magnetic material is required.
Choosing the Right Ring
Higher thrust loads need spiral wound construction. Corrosive environments need stainless or beryllium copper. Frequent removal suggests self-locking ramp designs. Spiral wound provides greater radial strength and better groove retention than bent-wire for demanding applications.
FAQ
Q1: MOQ?
A1: 100 pieces for standard rings.
Q2: Materials?
A2: Carbon spring steel, 302 stainless, beryllium copper.
Q3: Standard dimensions?
A3: ASME B27.7 (inch) and DIN 471/472 (metric). Custom dimensions available.
Q4: Spiral wound vs. bent-wire?
A4: Spiral wound for higher thrust loads and demanding applications. Bent-wire for standard use.
Q5: Non-standard rings?
A5: Yes. Custom rings for non-standard groove dimensions available.
Quality is non-negotiable in precision manufacturing. Every component undergoes rigorous inspection at each stage of production.
- ISO 13485 - Full FDA compliance support; quality management system for medical device components
- ISO 11607 / FDA 21 CFR 820 - Packaging and sterilization validation for implantable and surgical devices
- ASTM F136 / F67 - Material specification compliance for implant-grade titanium and stainless
- First Article Inspection (FAI) - Full dimensional and functional report for every medical component
- Passivation / Electropolishing - ASTM A967 procedures for corrosion resistance
- Material Traceability - Heat number tracking from raw material to finished part
From raw material to finished product, every step is controlled and documented:
- Material Preparation - Bar or forging stock selection with material certification
- Rough Machining - CNC turning/milling to gear blank profile
- Gear Cutting - Hobbing, shaping, or milling for gear tooth geometry
- Heat Treatment - Carburizing, induction hardening, or through-hardening
- Grinding / Finishing - Gear tooth grinding for AGMA 10+ quality levels
- Inspection - Lead, involute, and tooth thickness measurement against drawing
- Cleaning & Packaging - Rust prevention oil coating and protective packaging
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