6703 — 17 × 23 × 4 mm

What each manufacturer published.

A dash means that manufacturer did not publish the value. Dimensions every source agrees on are shown above rather than repeated per row.

Where the sources agree.

Where the figures differ, use the drawing from the manufacturer you buy from.

Calculated from the published values.

Arithmetic on the figures above — not a bearing life calculation for your load case.

The works that publish 6703.

NBK

Ningbo, Zhejiang, China

Deep groove ball bearings and custom variants

Ningbo Chuang Hon Yi manufactures deep groove ball bearings under the NBK brand. Its published company history connects the Ningbo plant with its Taiwan business, while the product scope describes bore sizes from 3–50 mm and customer-specific nonstandard designs. Exact size availability and configuration should be checked for the intended order.

Published ranges: Deep groove ball bearings · Customer-specific nonstandard bearings

32 designations documented here · 1 reviewed evidence record · source recorded 2026-09-24

Ask NBK about 6703

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RCL

Ningbo, Zhejiang, China

Thin-wall ball bearings for compact mechanisms

Ningbo Shilong manufactures high-precision bearings under the RCL name. Its published catalogue includes 67, 68, 69 and 60 series, with an emphasis on thin-wall bearings for compact mechanisms. Application pages identify encoders, motors, robots, bicycles and circular looms. Space envelope and rotational requirements are useful starting points for a technical inquiry.

Published ranges: 67- and 68-series thin-wall bearings · 69-series ball bearings · 60-series ball bearings

131 designations documented here · 1 reviewed evidence record · source recorded 2026-09-24

Ask RCL about 6703

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SFH

Shanghai, China

Miniature and thin-section ball bearings

Shanghai Hengan manufactures miniature bearings under the SFH brand, with a factory in Wuxi and technical and inspection functions in Shanghai. Its catalogue covers metric, inch and flanged deep groove bearings, thin-section designs, double-row angular contact bearings and thrust bearings. Special nonstandard designs are also listed.

Published ranges: Metric and inch miniature deep groove bearings · Flanged miniature bearings · Thin-section ball bearings · Double-row angular contact and thrust bearings

51 designations documented here · 1 reviewed evidence record · source recorded 2026-09-24

Ask SFH about 6703

Add to inquiry

Applications the publishing works state.

Application areas each manufacturer states for its own range. Confirm load, speed, temperature and lubrication for your case.

Not documented by any source here.

Precision class · Internal clearance · Sealing · Material · Cage material · Z class · V class · Limiting speed · Lubrication · Operating temperature · Precision standard · Ring material · Rolling element material · Noise / vibration test method · Manufacturer series · Manufacturer suffix · Ball count · Ball diameter.

Ask the manufacturer for these when you enquire.

Other designations with the same 17x23x4 mm envelope.

Same envelope, but sealing, internal design, clearance and load capability differ — not interchangeable by default.

Neighbouring designations documented here.

Each envelope shown is that designation’s own published size.