Machined aluminium connect ring with a stepped bore and an external retaining groove.

Precision Turned Parts

Aluminium Connect Ring

Name: Aluminium Connect Ring
Brand: Yiwu Hongpin Mechanical Equipment Company

A turned ring that joins two tube or housing sections and holds them concentric while the assembly is fastened.

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Made to your drawing. Every dimension below that depends on your print is marked To drawing rather than given a number that would only be a guess.

Overview

What This Part Does

The connect ring is a turned aluminium part with a stepped bore on one face and an external groove around the outside diameter. The step locates against the mating tube end so the two halves sit concentric before anything is torqued, and the groove takes a retaining ring or an O-ring depending on whether the joint has to be secured or sealed. It is the kind of part that never appears on a datasheet but decides whether an assembly goes together in ten seconds or ten minutes.

Key Benefits

Why It Is Made This Way

Concentricity built into the partThe locating step does the alignment, so the operator does not have to eyeball two tube ends into line.
One machining setupBore, step and groove are turned in the same setup, which is what keeps them concentric to each other.
Made to your ring grooveGroove width and diameter follow your retaining ring or seal, not a stock table.
Light where weight mattersAluminium alloy keeps the joint light on handheld and moving assemblies.

Problems It Solves

What Goes Wrong Without It

Catalogue rings never match the boreA stock ring forces you to redesign the tube around it. A made-to-drawing ring lets the tube stay as designed.
Misalignment at assemblyWithout a locating step the two halves are aligned by hand, and the error shows up later as a bearing that runs hot.
Groove tolerance fights the retaining ringA groove cut to the wrong width lets the ring rattle or refuses to take it at all.

Application Scenarios

Where It Is Used

Joining two sections of a tubular housing on a handheld or portable assembly
Locating a bearing carrier or end cap inside a tube bore
Carrying a retaining ring that holds a stack of internal components in place
Taking an O-ring where a tube joint has to keep dust or splash out

Who It Is For

Who Specifies It

Design and production engineers who are building a tubular assembly and need the joining hardware made to their own print rather than bought from a catalogue that almost fits.

Related Capability

Custom Parts to Drawing

Technical Features

How It Is Made

ProcessCNC turning, with secondary milling for cross holes or flats where the drawing calls for them
GeometryStepped bore, external retaining groove, chamfered lead-in
MaterialAluminium alloy as shown; stainless steel and engineering plastic available to the same print
FinishAs-machined; anodising or passivation on request

Specifications

Specification Table

Outside diameter	To drawing
Bore and step diameter	To drawing
Groove width and depth	To drawing, matched to your retaining ring or seal
Tolerance	Confirmed per project against your print
Material	Aluminium alloy, stainless steel or engineering plastic
Surface finish	As-machined unless specified
Minimum order	Confirmed per project

Values marked to drawing or confirmed per project are set against your print at quotation. No certification, capacity or tolerance figures are published because none were published by the business.

Comparison

How It Compares

Against a stock retaining ring groove machined into the tube itself, a separate connect ring costs more per assembly but lets you replace a damaged joint without scrapping the tube. Against a welded joint it is serviceable. Against a moulded plastic collar it holds tighter tolerances and takes more clamping load.

Use Guide

Deburr and clean the bore and the tube end before assembly.
Offer the tube end to the locating step and push it home square before fastening.
Fit the retaining ring or seal into the groove with the correct pliers, not a screwdriver.
Check that the assembly still turns freely before torquing anything down.

Questions

Questions About The Aluminium Connect Ring

Can you work from a 2D print or do you need a 3D model?

Either. A dimensioned 2D drawing is enough to quote and to machine. A STEP file alongside it removes any ambiguity about the groove profile and the chamfers.

Which retaining ring standards can the groove suit?

The groove is cut to the dimensions on your drawing, so it suits whichever ring you have already specified. Send the ring part number with the print and the groove will be matched to it.

Can the same ring be made in stainless instead of aluminium?

Yes. The same print can be run in stainless steel or in engineering plastic. Material choice changes the cutting parameters and the price, not the geometry.

What do you need in order to quote?

The drawing with tolerances, the material, the quantity and the finish. If a tolerance on the print is tighter than the function actually requires, that is worth saying, because it is usually where the cost sits.

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Quote The Aluminium Connect Ring

Send the drawing with tolerances, the material and the quantity. Say what the part fits against and any tolerance that is doing no work will be flagged before it is priced.

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