WEKO / PRECISION EXTERNAL DIAMETERS
Precision finishing for cylindrical features.
Diameter, form and surface—defined by your drawing.
THE CAPABILITY / THE APPLICATION
Ground surfaces can determine how a component locates, slides or fits. We review the functional diameter, material condition and acceptance requirements together.
Review your critical featureONE SURFACE / DIFFERENT REQUIREMENTS
A diameter tolerance does not replace a form control or roughness requirement. Select each topic to see what to include in your drawing.
ILLUSTRATIVE PROCESS STUDY / YOUR DRAWING DEFINES THE REQUIREMENTS
State the final diameter, tolerance, material and condition. Include stock allowance and the areas to be ground for a useful process review.
Review finished diameterCall out roundness, cylindricity or straightness separately where required. Explain the functional surfaces and the inspection method to be agreed.
Discuss form requirementsSpecify roughness, edge condition and any restrictions on surface defects. Confirm the acceptance criteria for the finished part.
Review surface requirementsFROM THE FEATURE TO THE COMPONENT
Shafts, pins, sleeves and other cylindrical components can include surfaces suitable for grinding. Identify the exact feature; the complete profile determines access and setup.
Define the functional diameters, lengths and datum relationships. Mark shoulders, reliefs and interrupted features so the route can be reviewed.
Specify the outside surface, wall geometry and its relationship to other features. A bore-to-OD requirement needs its own datum and inspection plan.
Component photos illustrate part families. The drawing review determines which surfaces and operations are suitable.
THE MANUFACTURING ROUTE
Material grade, heat treatment, stock dimensions and the condition before grinding.
The surface to grind, available stock, shoulders, reliefs and how the part can be supported.
Nominal diameter, tolerance, form controls, roughness and edge condition.
Measurement method, conditions, sampling and reporting for acceptance.
MATERIALS & PART CONDITION
Specify grade, hardness or heat-treatment condition, incoming surface and any required coating sequence. These details influence the grinding and inspection plan.
Explore material guidesExact grade, hardness and treatment condition. Identify when grinding occurs relative to heat treatment.
Specified grade and condition. Discuss cleanliness, corrosion requirements and any subsequent treatment.
Share the alloy, component function and final surface requirements for process review.
ACCEPTANCE / AGREED BEFORE PRODUCTION
Choose the method around the tolerance and the geometry. Define the reference, inspection conditions and records your team needs before the order is released.
Micrometer or air-gauge approaches, selected for the feature and required measurement capability.
Roundness, cylindricity, straightness or runout evaluated against the specified controls and references.
Roughness measurement with the parameter, limit and measurement conditions clearly defined.
YOUR MANUFACTURING PARTNER
Explore the people and production behind WEKO, then review the supplier documents relevant to your project.
Open supplier assessmentOpen each document to review its holder, scope and validity.
Certificate holder: Dongguan XuXiang Precision Hardware Co., Ltd., within the WEKO manufacturing group. Review each document for its certified entity, scope and validity.
THE NEXT STEP / YOUR GROUND FEATURE
Share the drawing, material condition and quantity. Identify the surfaces that need grinding and the requirements that decide acceptance.
Request Your Grinding Quote Agree an NDA before sensitive filesCENTERLESS GRINDING / QUESTIONS
Centerless grinding removes material from the outside of a cylindrical workpiece using a grinding wheel while a regulating wheel and work-rest blade support and control the part. It is a route to review for external diameter, form and surface requirements on suitable components.
It is the listed centerless-grinding capability for suitable ground features. It is not a blanket tolerance for every component, dimension, material or CNC operation. Confirm the feature, material condition, setup, measurement method and acceptance criteria during quotation.
The selected centerless-grinding equipment listing gives up to Ø30 × 80 mm. The full geometry, stock condition, wheel access and setup determine whether a part is suitable. Send the complete drawing for review.
External diameter size and roundness do not automatically establish runout to a separate bore or datum. Define the datum system, the relationship and the measurement method on the drawing so the proposed route can be reviewed.
Include the roughness parameter and limit, the surface where it applies and any required measurement method or conditions. Also state edge condition, cleanliness and protection requirements. A visual description alone is not a complete surface specification.
Yes. Discuss the complete component, incoming condition and final requirements. The quotation can define the turning or Swiss-type route and the suitable ground features, together with any other agreed operations.
Send the full profile and identify each surface that needs grinding. Shoulders, grooves, reliefs and interruptions can affect access and setup. The review determines the suitable process and which surfaces can be accepted.
Specify the exact alloy, stock form, material condition and any heat treatment. Steel, stainless steel and other requested materials need a process review against the part and final requirements; do not rely only on a material family name.
Discuss your quantity and the whole manufacturing route. WEKO offers single-piece and low-MOQ CNC options; the practical grinding setup, material and inspection scope are reviewed for the requested batch.
Send a drawing and revision, material and condition, quantity, incoming and finished diameters, grinding length, allowance if known, form controls, roughness requirements and the required inspection documentation. Ask for an NDA before sharing sensitive files.