H62 Brass CNC Turned Shaft for Marine Electronics

We produced this H62 brass CNC turned part for a marine electronics project in the United States.

The component is approximately 80 × 20 mm, with larger circular sections at both ends, a slender center shaft, and several narrow grooves and shoulders along the profile. The order was around 5,000 pieces, with critical dimensions specified at ±0.05 mm.

Production was based on the customer's 2D drawing and 3D model, and the complete batch was finished in approximately 15 days.

Part Details

A Straightforward CNC Turning Job

Most features on this component share the same centerline, so the part belongs naturally on a CNC lathe.

The larger end diameters, center shaft, shoulders and circumferential grooves can all be produced through turning and grooving. There is no need to introduce secondary milling simply to make the process sound more sophisticated.

The part does, however, change considerably in diameter from end to center.

A relatively large amount of material is removed to create the slender middle section while leaving the larger geometry at both ends. As the shaft becomes thinner, cutting conditions need to suit the reduced rigidity of the part.

That is where we pay more attention during turning.

The Grooves Are Simple Features That Need to Stay Consistent

Several narrow grooves are positioned along the center shaft.

They are not difficult features by themselves. For batch production, the more relevant question is whether their width, depth and location remain consistent as production moves from the first pieces into the thousands.

Tool condition is therefore monitored during the run, together with the dimensions identified as critical on the drawing.

The same applies to the shoulders between different diameters. On a stepped shaft, a diameter can be correct while an axial position is not. Both need to follow the drawing where they affect the customer's assembly.

Working to the Customer's ±0.05 mm Requirements

Several critical dimensions are specified at approximately ±0.05 mm.

We apply these requirements according to the customer's 2D drawing rather than treating the entire component as a ±0.05 mm part.

Depending on the design, inspection may focus on a shaft diameter, shoulder location, groove dimension or the relationship between the two larger end sections.

The customer's 3D model helps us understand the complete geometry, while the 2D drawing provides the tolerances and manufacturing requirements used for production and inspection.

For custom CNC turned parts, both files are useful for different reasons.

Machining H62 Brass

H62 brass was specified for this marine electronics component and was used according to the customer's requirement.

The material is well suited to the turning and grooving operations needed for this part. Since the center section requires considerable diameter reduction, stable cutting and sensible chip control help keep production moving across a 5,000-piece batch.

We do not substitute another commonly machined brass grade unless a material change has been reviewed and approved by the customer.

For made-to-drawing parts, material grade is part of the specification—not simply a purchasing choice.

5,000 Pieces in Around 15 Days

The production route was kept short:

Material Preparation → CNC Turning & Grooving → Deburring → Inspection → Packing

Approximately 5,000 pieces were completed in around 15 days.

Keeping the main geometry on the lathe avoided unnecessary transfers between machining processes. During the production run, relevant dimensions were checked at intervals rather than waiting until the entire order had been completed.

This is particularly useful on repeat turning work, where gradual tool wear can affect dimensions or groove condition long before there is an obvious visual difference between parts.

Custom Brass CNC Turning from Customer Drawings

YS Precision provides custom brass CNC turning services for parts manufactured from customer 2D drawings and 3D models.

Typical drawing-based turned components include shafts, pins, sleeves, bushings, spacers, threaded parts and other rotational hardware. Depending on the geometry, machining may involve turning, grooving, drilling, boring, threading or turn-mill operations.

This H62 component did not need a complicated process. Its geometry was suited to CNC turning, so the production plan stayed focused on doing that process consistently across the required quantity.

If you are sourcing similar custom brass CNC turned parts, send us your drawings, material grade, order quantity and critical tolerance requirements. We can review the part and quote according to the actual machining requirements.