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Santa Ana, CA • Precision Grinding • Since 1980

Precision grinding that makes assemblies predictable.

Duval Precision Grinding supports aerospace, defense, and industrial teams with ID grinding, OD grinding, rotary face grinding, and bevel gear grinding. We plan the datum strategy early, control the characteristics that drive function, and verify results before shipment.

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Common applications
Bearing fits and journals
Bushings, sleeves, liners
Hydraulic and valve components
Runout-critical shafts
Gear tooth geometry finishing
Flatness and parallelism for stack-ups
Email [email protected] | Phone (714) 546-9439
Capability Snapshot

Built for tight tolerances

Quick reference for supplier evaluation and RFQs.

◎
Tolerance
±0.0001 in
application dependent
Finish
8 µin Ra
profilometer verified
ID capacity
10 in × 10 in
diameter × length
OD range
0.009–18 in
diameter range
Request a Quote See services
Fast RFQ includes
Print with datums and tolerances, material/heat treat, coating/plating, quantity, due date, inspection or report needs.
40+ years
Grinding-first focus
We specialize in grinding discipline: datums, setups, verification, and finish control.
Process
Planned up front
We align what we grind to what you measure, so inspection and function match.
Verify
In-process checks
Critical features verified during processing to reduce surprises and rework.
Docs
Inspection available
Documented measurements and optional reporting when you call it out in the RFQ.

Precision grinding services

Written for buyers and engineers who care about outcomes: fit, runout, geometry, and finish. These are our core processes and what they’re best at.

View full capabilities
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Internal Diameter Grinding • Bore Grinding

ID Grinding

Precision bore grinding for bearing seats, bushings, sleeves, housings, and hydraulic components—ideal when fit class, cylindricity, and ID-to-OD alignment matter.

Max diameter10 in
Max length10 in
Tolerance±0.0001 in
Finish8 µin Ra
What it solves
  • Stable bearing fits (press or slip) with consistent assembly feel
  • Leak reduction via functional finish for seals
  • Correcting heat treat distortion and taper in bores
  • Alignment strategy for runout-critical assemblies
RFQ tips
Call out the functional intent (bearing fit, seal, sliding). Specify the primary datum for inspection and how concentricity/runout should be interpreted.
Keywords: internal diameter grinding, bore grinding, bearing bore grinding, hydraulic bore grinding.
Request ID quote More details
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Outer Diameter Grinding • Cylindrical Grinding

OD Grinding

Cylindrical grinding for shafts, journals, pins, rollers, and spindles—optimized for runout control, cylindricity, and functional finishes.

Diameter range0.009–18 in
Max swing90 in
Tolerance±0.0001 in
Finish8 µin Ra
What it solves
  • Low runout for rotating assemblies and bearing journals
  • Post-heat treat finishing (correcting distortion)
  • Diameter correction after coating or plating
  • Reduced friction and wear via finish control
RFQ tips
If runout is critical, specify the datum and measurement method. If centers are required, call it out. Include coating thickness when applicable.
Keywords: cylindrical grinding, shaft grinding, journal grinding, runout control grinding.
Request OD quote More details
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Bevel Gear Grinding • Tooth Geometry Finishing

Bevel Gear Grinding

Finishing for hypoids, spirals, and zerols on Gleason 463—focused on consistent tooth geometry where contact behavior impacts noise, heat, efficiency, and life.

MachineGleason 463
Gear typesHypoids, spirals, zerols
FocusRepeatable geometry
Use casePower transmission
What it solves
  • Improved consistency between sets
  • Noise-sensitive gear trains
  • High-load applications needing stable tooth geometry
  • Finishing after heat treat
RFQ tips
Send the gear drawing or spec sheet, material and heat treat condition, quantity, and acceptance criteria if you have it. We’ll align the finishing plan to the outcome you’re targeting.
Keywords: bevel gear grinding, Gleason 463 gear grinding, hypoid gear finishing.
Discuss gear grinding More details
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Rotary Face Grinding • Thickness Grinding

Rotary Face Grinding

Face grinding for thickness, flatness, and parallelism—ideal for spacers, washers, thrust faces, seal faces, and stack-up-critical parts.

ControlsFlatness and parallelism
Common driverStack height
Ideal forSeal and thrust faces
BenefitRepeatability
What it solves
  • Stable thickness for assemblies and shimming
  • Better sealing and contact behavior
  • Reduced stack-height variation
  • Flatness/parallelism where it drives function
RFQ tips
Call out the measurement reference (datum face), the stack-up target, and any finish requirements tied to sealing or wear.
Keywords: rotary face grinding, thickness grinding, flatness grinding, parallelism grinding.
Request face quote More details

How we keep parts on spec

Grinding success is mostly planning: datums, stock allowance, stability, and inspection alignment. Here’s the practical flow we follow to reduce risk.

Send an RFQ Ask a question
01
RFQ review and datum strategy
We align what we grind to what you measure: runout, concentricity, finish, fit intent.
02
Setup planning
Fixturing, centers, support, and sequence selection to control geometry and repeatability.
03
Grinding and in-process checks
Critical features verified during processing to keep parts on track.
04
Final inspection and documentation
Verification with calibrated tools and profilometer checks; reports upon request.
Planning note
If a tolerance is functional (fit, seal, bearing), tell us why. That context helps choose the right setup and verification approach.

RFQ checklist (fastest path to pricing)

Quotes move fast when requirements are explicit. Include these items to reduce back-and-forth and protect schedule.

Print or model with datums and critical tolerances
Material and condition (heat treat included)
Coating or plating type and thickness
Quantity, due date, inspection or reporting needs
Helpful extras
Fit intent (bearing, seal, sliding), stock allowance, mating part notes, and any special gaging conditions.
Inspection expectations
If you need a report, call out which characteristics must be recorded (size, runout, finish, geometry).
Use the RFQ form Email a print

Quality and inspection

Inspection is aligned to what you specify. If documentation matters, call it out in the RFQ so it’s built into the plan.

Calibrated tools
Micrometers, bore gauges, indicators.
Surface finish verification
Profilometer checks to 8 µin Ra when applicable.
Traceable standards
Documented procedures and measurement discipline.
Reports available
Upon request — aligned to your critical characteristics.
Talk to an engineer

FAQ

Quick answers for buyers sourcing precision grinding and engineers defining critical characteristics.

What do you need for a quote?
A print or model with revision, quantity, material and condition (including heat treat), coating or plating details, due date, and critical notes such as finish, datums, and runout or concentricity definitions.
What tolerances can you hold?
Many applications can be supported up to ±0.0001 in depending on geometry, stability, datum strategy, and inspection alignment. We confirm feasibility based on your print.
Can you grind coated or plated parts?
Yes. Include coating type and thickness and clarify whether size is specified before or after plating so the process can be planned correctly.
Do you support prototype and production?
Yes. We support prototypes, short runs, and repeat production work depending on requirements and scheduling.
Can you help if the drawing is unclear or risky?
Yes. We flag tolerance conflicts, datum ambiguity, and measurement risks early to reduce surprises.
Ready to quote your next job?
Send a drawing and requirements. We respond with next steps and realistic timing.
Start an RFQ
RFQ

Send your requirements

This form emails [email protected]. Reply goes to the customer automatically.

Fast quoting inputs
  • Drawing revision and quantity
  • Material and condition
  • Due date
  • Critical datums, runout definitions, and finish callouts

Or email drawings directly to [email protected]

RFQ email form

Thank you. Your RFQ has been sent to [email protected].
Phone (714) 546-9439
Hours Monday to Friday 7:00 a.m. to 3:00 p.m. PST

Santa Ana, California

1700 Newport Cir Ste N, Santa Ana, CA 92705

Get directions
Ready to quote your next job?
Email [email protected] or call (714) 546-9439.
Request a quote

Duval Precision Grinding is a grinding-first machine shop focused on ID, OD, rotary face, and bevel gear grinding. Family owned in Santa Ana, California since 1980, we specialize in tight-tolerance finishing where fit, geometry, and verification determine real-world performance.

We help aerospace, defense, and industrial teams reduce assembly risk by planning datum strategy early, controlling the characteristics that drive function, and verifying results before shipment.

Services
Company
Contact
Email

[email protected]
Hours

Monday – Friday
7:00 a.m. – 3:00 p.m. PST
Location

Santa Ana, California
© 2026 Duval Precision Grinding. All rights reserved.
Built for engineers, buyers, and precision assemblies.