External retaining ring WZM-25

spiral

Carbon steel and 302 and 316 stainless steel external spiral retainer ring

Description:
Our external spiral retaining ring has no interfering ears in assembly and the inner diameter is burr-free, enabling manual and automatic quick installation and removal. Unlike die-stamped circlips that have ears which can interfere during assembly and produce burrs on internal diameters, spiral retaining rings install cleanly.

A 2 turn external spiral retaining ring is made of two spiral coils wound around each other. This design is typically used in applications requiring a high level of retention.

The advantages of external spiral retaining ring are as follows:

• Simple structure, small volume and low material usage, resulting in low cost; suitable for compact device designs and limited installation space; reduces the number of parts required.
• Multi-point contact provides larger current carrying capacity where applicable; good electrical conductivity and high electrical and thermal stability.
• Low contact pressure per contact point, giving good wear resistance.
• Unique structure gives a wide application range and greater adaptability to machining and assembly tolerances.

How to use a 2 turn external spiral retaining ring?
Identify the component to be retained and ensure the ring size matches the component's external geometry. Hold the component and the retaining ring together, then twist the retaining ring two turns in the same direction as the thread or orientation required by the assembly until it seats. Once properly installed the ring should remain in place and retain the component.

Processing Steps
Design → Drawing → Flat the wire → CNC Machining → Heat treatment → Surface → Finishing → Quality Inspection → Packing

Finish
Oil dip, passivation, blacking, zinc/nickel/chrome/silver/gold plating, powder coating, etc.

Specification:
(Some specifications and sizes are available in multiple part numbers and ranges.)

Table (Part Number | Used | Inside Diameter (mm) | Radial Wall (mm) | Thickness (mm) | Turns | Shaft Diameter (mm) | Groove Diameter (mm) | Groove Width (mm))
Part Number | Used | Inside Diameter (mm) | Radial Wall (mm) | Thickness (mm) | Turns | Shaft Diameter (mm) | Groove Diameter (mm) | Groove Width (mm)
EZ-6 | External | 5.61 | 0.48 | 0.64 | 2-Turn | 6 | 5.66 | 0.74
WZM-25 | External | 5.79 | 0.51 | 0.64 | 2-Turn | 6.35 | 5.84 | 0.74
EZ-7 | External | 6.53 | 0.61 | 0.64 | 2-Turn | 7 | 6.58 | 0.74
WZM-31 | External | 7.29 | 0.64 | 0.64 | 2-Turn | 7.92 | 7.37 | 0.74
EZ-8 | External | 7.49 | 0.61 | 0.64 | 2-Turn | 8 | 7.57 | 0.74
EZ-9 | External | 8.41 | 0.74 | 0.64 | 2-Turn | 9 | 8.48 | 0.74
WZM-37 | External | 8.86 | 0.76 | 0.64 | 2-Turn | 9.53 | 8.94 | 0.74
EZ-10 | External | 9.4 | 0.74 | 0.64 | 2-Turn | 10 | 9.5 | 0.74
EZ-11 | External | 10.39 | 0.86 | 0.64 | 2-Turn | 11 | 10.46 | 0.74
WZM-43 | External | 10.39 | 0.89 | 0.64 | 2-Turn | 11.1 | 10.46 | 0.74
... | ... | ... | ... | ... | ... | ... | ... | ...
WZM-1350 | External | 326.06 | 16.81 | 4.75 | 2-Turn | 342.9 | 328.35 | 5.31
DNZ-340 | External | 327.69 | 15.88 | 5.87 | 2-Turn | 340 | 330 | 6.2
WZM-1375 | External | 332.08 | 16.81 | 4.75 | 2-Turn | 349.25 | 334.42 | 5.31
DNZ-350 | External | 337.64 | 15.88 | 5.87 | 2-Turn | 350 | 340 | 6.2
WZM-1400 | External | 338.1 | 16.81 | 4.75 | 2-Turn | 355.6 | 340.49 | 5.31
WZM-1425 | External | 344.12 | 16.81 | 4.75 | 2-Turn | 361.95 | 346.56 | 5.31
DNZ-360 | External | 347.57 | 15.88 | 5.87 | 2-Turn | (data not specified) | (data not specified) | (data not specified)

Caractéristiques / spécifications techniques

• Model / denomination: 2 Turn External Spiral Retaining Ring
• Materials: carbon steel, 302 stainless steel, 316 stainless steel
• Turns: 2-turn spiral design
• Typical inside diameter examples: from ~5.61 mm up to >330 mm (see table for many part numbers and sizes)
• Typical radial wall examples: ranges shown in table (e.g. 0.48 mm → 16.81 mm depending on part)
• Typical thickness (wire): commonly 0.64 mm for many small parts; larger parts have greater thicknesses shown in table
• Available surface finishes: oil dip, passivation, blacking, zinc/nickel/chrome/silver/gold plating, powder coating
• Manufacturing process: wire flattening, CNC machining, heat treatment, surface treatment, finishing and inspection
• SKU example on page: 185ad25d509e
• Category: External Spiral Retaining Rings