Quality & Sourcing

OUR SOURCING PROCESS

Four steps between your inquiry and our quote.

1

Spec confirmation

We check the part number against dimensions, tolerance, seal, clearance and material. If anything is unclear, we ask — we don't guess.

2

Supply verification

We confirm whether the bearing is in-house production, partner supply, or needs custom manufacturing. No "in stock" claims without verification.

3

Quote with lead time

You get a formal quotation with a realistic lead time — not a placeholder. The quote is based on confirmed supply, not a sales target.

4

Inspection & shipment

Before shipping, bearings are inspected for the parameters that matter for your application. Inspection data available on request.

IN-HOUSE INSPECTION

What we actually measure.

These aren't marketing claims. These are the parameters our inspection equipment measures, per batch, on real bearings.

NLHB in-house bearing raceway ultra-precision super-finishing workshop

Geometry & dimensions

Bore diameter (d) — tolerance per ABEC / ISO class

Outer diameter (D) — tolerance per ABEC / ISO class

Width (B) — tolerance band

Raceway roundness — measured on roundness tester

Radial / axial runout

Surface & finish

Raceway roughness (Ra) — surface profilometer

Ball surface quality

Cage integrity and clearance after assembly

Seal / shield fit and drag torque

Visual inspection for cracks, corrosion, handling damage

Performance

Noise / vibration level (ANDERON or equivalent)

Radial clearance (C2 / C3 / C4)

Starting torque

Low-speed rotation test

Optional: life test for critical applications

Material & traceability

Steel grade verification (GCr15 / stainless)

Heat treatment hardness (HRC)

Batch traceability from raw material to shipment

Material certificate available on request

Heat number recorded per batch

Inspection scope is defined by the model, application and agreed sampling plan. Ask us which measurements and reports can be included for your specific order.

PACKING & EXPORT

Built for the journey, not just the warehouse.

Anti-corrosion

Every bearing is coated with rust-preventive oil rated for 6-12 months of sea transit. Climate-specific oil available for humid destinations.

Vacuum + individual wrap

Individual plastic wrap or vacuum-sealed packs for critical bearings. Group packing for bulk standard models. Mixed packing for multi-line orders.

Pallet & export docs

Palletized for sea freight, carton-packed for air. We handle export paperwork, commercial invoices and certificates of origin as needed.

Want inspection data with your order?

Tell us your application and we'll tell you which parameters we can measure and provide data for — before you commit.

Request a Quote