Diameter-led review
Outside diameters, bores, shoulders, grooves, threads, and round-feature relationships are organized before the process path is confirmed.
CNC turning services
CNC turning, built around diameter, fit, and function.
Shafts, bushings, sleeves, pins, and adapters depend on the relationships between outside diameters, bores, shoulders, grooves, and threads. Share the model and drawing so Pearson can review the critical features and confirm the project path before acceptance.
- Drawing-led review
- Human-managed follow-up
- Scope confirmed per quote
Capability review
This page describes common request types. Available processes, equipment, tolerances, inspection, documentation, and fulfillment are confirmed for each quote.
Overview
A clearer way to plan a turned part.
A useful turning review starts with the part function, the features organized around its axis, and a drawing that identifies the diameters, fits, threads, grooves, surfaces, and relationships that are actually critical.
Fit and datum context
Mating components, bearing or sealing surfaces, and datum intent help reveal inspection and setup questions early.
Functional intent up front
Runout, concentricity, finish areas, and documentation expectations belong in the request instead of being inferred later.
Fulfillment review
Requests are reviewed manually. The fulfillment route and availability are confirmed before acceptance.
Quote inputs
The information that starts a useful turning review.
You do not need every answer before submitting. Share what is known and mark the rest for follow-up.
- Common part shapes
- Shafts, pins, bushings, sleeves, collars, spacers, rollers, fittings, adapters, and other cylindrical parts
- Helpful files
- STEP or STP model, PDF drawing, sketch, or clear photos and key measurements of an existing part
- Features to identify
- Critical outside and inside diameters, fits, shoulders, thread details, grooves, runout, concentricity, and surface requirements
- Project context
- Material preference, quantity, target timing, finish, mating-part function, and inspection or documentation needs
Interactive turning review
Explore the details that shape a turning review.
Select a feature on the sample threaded adapter to see what the model and drawing should communicate before the project path is confirmed.
Sample threaded adapter feature map
The numbered markers match the labels below and the review panel.
Illustrative example only; markers identify features, not dimensions or tolerances.
Turning feature explorer
What should the drawing explain?
Choose a feature to see the details that help Pearson understand the request.
Diameter, shoulder location, and runout intent
Functional outside diameters and shoulder faces shape fit, workholding, setup planning, finish review, and the inspection approach.
- Critical outside diameter and fit
- Shoulder and face locations
- Runout or concentricity requirement
Helpful upload
Identify the functional diameters, tolerances or fits, surface requirements, and the datum used for any runout control.
Illustrative part only. Geometry, equipment fit, tolerances, inspection, and documentation are confirmed from your files during quote review.
Capabilities
Common CNC turning request patterns, kept easy to scan.
These examples help identify the likely starting point. Exact equipment fit, achievable tolerances, and availability are confirmed from the project files.
Outside diameters, faces, and shoulders
OD & shouldersShafts, pins, collars, spacers, rollers, adapters, and other round profiles with functional diameters, shoulder locations, chamfers, and end faces.
Internal diameters and functional bores
Bores & fitsBushings, sleeves, fittings, and round housings with clearance bores, fit-controlled IDs, internal steps, and through or blind geometry.
Assembly and sealing details
Threads & groovesExternal or internal threads, reliefs, undercuts, snap-ring locations, and groove details defined by their mating or sealing function.
Finish and inspection requirements
CompletionSurface-finish areas, edge condition, critical dimensions, runout intent, documentation, and inspection expectations reviewed with the request.
Quote workflow
From files to a confirmed turning path.
A short, human-managed review keeps geometry, fit, and open questions visible before work is accepted.
- 01
Share the part
Upload the model, drawing, photos, quantity, material preference, and known fit or functional requirements.
- 02
Review the critical features
Diameters, bores, shoulders, threads, grooves, datum relationships, finish, and inspection intent are organized for follow-up.
- 03
Confirm the path
Equipment fit, tolerances, fulfillment, timing, and remaining questions are resolved before acceptance.
- 04
Coordinate the project
Approved drawings and requirements become the reference point for production communication and delivery planning.
Drawing readiness
Small decisions that make a turned part easier to review.
Clear functional intent is more useful than applying tight requirements everywhere.
Design intent before assumptions
- 01
Tolerance only the functional diameters.
Apply close requirements to the journals, fits, bores, and faces that affect how the part works instead of every turned surface.
- 02
Identify the datum and fit relationships.
Show which axis or surface controls runout, concentricity, shoulder location, and the relationship between inside and outside diameters.
- 03
Specify threads completely.
Include the thread standard, size, pitch, class, hand, length or depth, and any verification requirement.
- 04
Provide practical thread reliefs and undercuts.
A clear tool-exit feature can reduce ambiguity where a thread or turned surface meets a shoulder.
- 05
Review thin walls and slender geometry.
Long, narrow, or thin-walled shapes can change workholding and inspection questions, so identify where the geometry is functionally required.
- 06
State surface-finish and edge intent.
Separate bearing, sealing, cosmetic, deburred, chamfered, and general surfaces on the drawing.
Materials
Common materials for CNC turning review.
Grade, form, condition, finish, and availability are confirmed for each request.
Material guide
Aluminum
Spacers, collars, sleeves, fittings, prototypes, and lightweight turned components.
6061-T6 · 7075-T6 examples
View materialMaterial guide
Tool steel
Wear-related pins, bushings, sleeves, tooling components, and other turned details where grade and condition matter.
A2 · D2 · O1 · other grades by review
View materialMaterial guide
Stainless steel
Corrosion-resistant fittings, shafts, sleeves, adapters, and industrial round components.
303 · 304 · 316/316L examples
View materialMaterial guide
Brass
Fittings, bushings, adapters, sleeves, and other turned components where machinability and finish matter.
C360 · other copper alloys by review
View materialContinue exploring
Related services and application guides.
Lathe Work
Review one-off, repair, replacement, and short-run manual turning requests.
Large Turning
Review larger-diameter and longer cylindrical-part request considerations.
Cylindrical Grinding
Review diameter, surface-finish, and journal requirements that may call for grinding.
Tapping & Threading
Review thread form, depth, fit, and verification requirements.
Automotive OEM & Aftermarket
Review application and documentation considerations for automotive requests.
Industrial Machinery & Equipment
See common shaft, roller, bushing, and equipment-component applications.
FAQ
CNC turning quote questions.
A STEP or STP model and a PDF drawing are the best starting pair. Add quantity, material preference, critical diameter and bore details, thread callouts, datum or runout intent, finish, inspection or documentation needs, and target timing when known.
Identify the outside and inside diameters, functional fits, shoulder locations, threads, grooves, reliefs, surface requirements, and relationships that affect how the part mates or performs.
Clear photos, key measurements, quantity, material information, and notes about the part function can start the review. Pearson will follow up on the model, drawing, or additional measurements needed before acceptance.
Identify the diameters, bores, faces, datum axis, and relationships that affect function. Achievable tolerances and the required inspection approach are confirmed from the project files during quote review.
Include the required finish, affected surfaces, critical dimensions, and documentation expectations in the request. Scope and availability are confirmed before acceptance.
Requests are reviewed manually. The fulfillment route and availability are confirmed before acceptance.
Start with the files you have
Ready to review your CNC turning project?
Share the model, drawing, photos, and known requirements. Pearson will follow up on the details that still need confirmation.
Request a turning quote