Centerless grinding requirements

Centerless grinding finishes an external cylindrical surface while supporting the workpiece between a grinding wheel, a regulating wheel and a workrest. Part geometry and incoming condition affect the suitable grinding route.

Cylindrical ODsWorkpiece scopeIdentify the outside diameters and lengths that require grinding.Drawing requirementsSize and formDefine diameter limits and any separate geometric requirements.Ground surfacesSurface conditionSpecify the required texture and the final condition of the part.

Part dimensionsSend the overall diameter and length, plus the position and extent of each surface to be ground.

Materials and conditionIdentify the material grade, hardness or heat-treatment condition, and the condition of the incoming blank.

Diameter and formState the required diameter tolerance. Mark roundness, cylindricity or other geometric requirements separately where they matter.

Surface requirementsInclude the surface-texture callout, such as Ra or Rz, and identify the surface to which it applies.

Incoming stockProvide the blank dimensions and any machining already completed. Grinding allowance is agreed for the specific workpiece.

Production quantitiesInclude the first batch and repeat demand. Part handling, sample approval and the inspection scope are agreed with the route.

Agree what will be checked

Define diameter, form and surface texture for the features that affect the assembly. Agree the acceptance criteria and how they will be checked.

Diameter and geometric formIdentify the ground length and diameter limits. If roundness or cylindricity is critical, specify it on the drawing and agree how it will be verified.Material and incoming blankReview the grade, hardness and stock condition before agreeing the process. The blank dimensions and allowance must suit the required finished surface.Surface and edge conditionDefine the surface-texture requirement and any restrictions on marks or damage. Include end chamfers and edges that need particular attention.

Plan grinding with the rest of the part

Include the operations before and after grinding. Agree which dimensions and surface requirements apply to the final condition of the part.

Before grindingProvide the incoming blank drawing or dimensions, including any turning already completed. Confirm the surfaces and stock left for grinding.Heat treatment and coatingsState whether the parts arrive hardened and whether heat treatment or coating is planned later. Agree the operation sequence with the final requirements.Inspection planSpecify the characteristics and records needed for acceptance. The measurement approach and sampling requirements are agreed before production.Handling and protectionIdentify functional surfaces that need protection against contact damage. Agree batch handling and delivery protection for those surfaces.

From enquiry to production

Requirements and approvals are agreed at each stage.

1Send the requirementsDrawing, material condition, ground features, surface requirements and quantities.2Review the workpieceAgree geometry, incoming stock, the grinding route and inspection requirements.3Approve the samplesCheck the agreed dimensions, surface condition and any required quality records.4Produce and deliverComplete the agreed operations, final checks and protection for delivery.

Frequently asked questions

Details to settle when ordering ground cylindrical parts.

Which diameters and lengths can you handle?Send the drawing and incoming blank details. Feasibility is reviewed for the part geometry, material condition and required ground surfaces before the range is confirmed.What tolerances and surface finish can you achieve?State the diameter limits, surface texture and geometric tolerances needed for the workpiece. We review these together before confirming the process and inspection requirements.Can parts with shoulders or steps be assessed?Send the complete profile and identify the surfaces to be ground. Shoulders, changes in diameter and access can affect suitability, so the grinding method is selected after drawing review.Does a diameter tolerance also define roundness?Diameter size and roundness describe different requirements. Specify roundness or cylindricity separately when the function needs it, and agree the relevant verification method.How should heat treatment and coatings be handled?State the material condition when parts arrive and any later operations. Agree whether acceptance dimensions and texture apply before or after those operations.What should I send for a quotation?Include the part drawing, material and hardness condition, blank dimensions, ground surfaces, tolerances, surface requirements and quantities. Add any sample, inspection or handling requirements.

CNC machining services

Discuss your centerless grinding project.Email your drawing, material condition and quantities. Mark the diameters and surfaces that require grinding, together with the acceptance requirements.kingteam@kingteam-cn.comContact details