Cylindrical Grinding Services

Q: What do you need to quote same-day?

Upload your drawing/PDF with tolerances and finish, STEP/IGES if available, material and condition (e.g., hardened), quantities, any inspection/coating needs, and target date. We will route in-house or to partners for best lead time.

Q: How tight can you go on roundness and finish?

Commercial targets are often ≈ 0.002–0.010 mm roundness with Ra ≈ 0.4–0.2 µm finishes. Tighter specs may be achievable after reviewing geometry, fixturing, and inspection plan.

Q: Do you sign NDAs and provide FAI/CMM reports?

Yes. NDAs, FAIR/FAI, CMM measurement reports, and certificates of conformance are available on request.

Precision OD & ID grinding for tight tolerances and low surface roughness.

Request a Quote See Capabilities

ISO 9001:2015

Made in Canada

40+

Years of Experience

5K+

Satisfied Customers

Overview

Pearson Manufacturing offers access to high-precision cylindrical grinding — OD and ID — through a hybrid model. Select work is completed at our Ontario facility; specialized geometries, deep bores, or higher volumes are routed through certified Canadian partners. We manage sourcing, QA, and logistics so parts arrive line-ready.

⚠️ Hybrid fulfillment: We coordinate the best routing (in-house or partner) to meet spec, cost, and schedule.

Quick Specs

Processes

OD & ID grinding; plunge & traverse; controlled spark-out; related: centerless OD, honing (via partners)

Typical Tolerance

Diameter to ±0.003–0.010 mm; roundness/concentricity ≈ 0.002–0.010 mm (geometry-dependent)

Surface Finish

≈ Ra 0.8–0.2 µm typical; finer attainable with superfinish/hone on request

Example Envelope*

OD up to ~200 mm Ø × ~800 mm L; ID depths to ~500 mm with proper access (by review)

Process	Best For	Throughput	Notes
OD Grinding	Shafts, journals, bearing fits	High	Excellent roundness & low runout on external diameters
ID Grinding	Bores, bushings, housings	Medium–High	Tight bore geometry; deep IDs with correct quills/support
Centerless (related)	High-volume OD finish	Very High	No centers/chucks; exceptional throughput for pins/rollers
Honing (related)	Final bore geometry/finish	Medium	Cross-hatched finish; improves bore size control and seal life

*Example envelope reflects typical routing via in-house equipment or partner network; actual capacity is geometry-dependent.

Grinding Capabilities

OD grinding up to ~200 mm diameter & ~800 mm length (by geometry/fixturing)
ID grinding with deep-bore access up to ~500 mm depth using quills/mandrels
Micron-class concentricity/roundness targets with in-process gauging & spark-out
Materials: tool steels, stainless, hardened/alloy steels, aluminum, brass, bronzes
Finishes down to ~Ra 0.2 µm typical; superfinishing/honing for lower Ra when required
Heat-treat-first workflows with planned grind stock and distortion allowances
FAI/FAIR, CMM inspection, and certificates of conformance on request

OD Journals

ID Bores

Why Choose Our Grinding?

Micron-class roundness for bearing and seal fits
Low Ra finishes that reduce friction and wear
Repeatable production quality from prototype through volume
Hybrid routing (in-house + partners) for best lead time and cost
Single PO with Pearson QA, logistics, and inspection coordination

DFM & Inspection Guidelines

Leave adequate grind stock: ~0.10–0.30 mm radial typical (adjust for material and heat treat).
Perform heat treatment prior to finish grinding when hardness or stability is critical.
Call out roundness/concentricity only on functional fits; keep non-critical features at standard tolerances.
Specify target finish (e.g., Ra 0.4 µm on journals) and break edges to avoid burrs and chipping.
For deep IDs, include wall thickness and length early to assess deflection/support needs.
Provide STEP/IGES + PDF with datums, tolerances (incl. GD&T), inspection notes, and any mating gage sizes.

We will review geometry, hardness, and inspection needs, then confirm achievable specs with the best routing (in-house or partner) before kickoff.

Common Applications

Shafts and rollers for rotating machinery
Precision sleeves, bushings, and housings
Hydraulic/pneumatic cylinder components
Bearing surfaces and journal restoration
Repair/reconditioning of worn cylindrical parts

Cylindrical Grinding FAQs

What do you need to quote same-day?

Upload your drawing/PDF (tolerances & finish), STEP/IGES if available, material/condition (e.g., hardened), quantities, any inspection/coating needs, and target date. We will route in-house or to partners for the best lead time. Start your quote and we will respond quickly.

Is cylindrical grinding performed in-house?

Both. We grind select work in Ontario and route specialized, deep-bore, or high-volume jobs through trusted Canadian partners — all under Pearson QA and a single PO.

How tight can you go on roundness and finish?

Commercial targets are often ≈ 0.002–0.010 mm roundness and ~Ra 0.4–0.2 µm finishes. Tighter specs may be achievable after reviewing geometry, fixturing, and inspection plan.

Do you sign NDAs and provide FAI/CMM reports?

Yes. NDAs, FAIR/FAI, CMM reports, and certificates of conformance are available on request.

Can you support rush orders or blanket schedules?

Yes. Share your required-by date or release plan and we will propose the best routing (in-house/partner) to meet it. Start your quote and we will respond quickly.