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628 — 8 × 24 × 8 mm

BOUNDARY DIMENSIONSUNIT / mm
B = 8 mmD = 24 mmd = 8 mm
Boundary dimensions · schematic, not a product photograph or manufacturing drawing.
Deep groove ball

628

628 is a deep groove ball designation documented on BearingIndex from 5 independent manufacturer publications. The published boundary dimensions are 8 × 24 × 8 mm. The publishing works are in Zhejiang, Shanghai provinces, China. Every value below comes from that manufacturer’s own published material, with the date it was recorded.

Bore d
8 mm
Outside D
24 mm
Width B
8 mm

Compare the 5 publications

What each manufacturer published.

ManufacturerDynamic load rating (kN)Static load rating (kN)Limiting speed — grease (rpm)Limiting speed — oil (rpm)Minimum corner radius (mm)Ball count (pcs)Ball diameter (mm)Reference mass (kg)Source recorded
Sihai
628
————————2026-09-24Request
SFH
628
————————2026-09-24Request
Yuyao Global
628
————————2026-09-24Request
RCL
628
3.351.432800034000———0.0172026-09-24Request
Yuyao Xinfeng
628
3.331.41——0.373.969—2026-09-24Request

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.

PropertyFindingSources
Dynamic load ratingRanges 3.33 – 3.35 kN across 2 sources2
Static load ratingRanges 1.41 – 1.43 kN across 2 sources2

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

Calculated from the published values.

FigureHow it is obtainedResult
Radial section height(D − d) / 28 mm
Mean diameter dm(D + d) / 216 mm
Speed factor dm · nmean diameter × highest published limiting speed544,000 mm·min−1
C / C₀ load ratio (2 sources)dynamic ÷ static load ratingRCL 2.34 · Yuyao Xinfeng 2.36

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

The works that publish 628.

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 628

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 628

Sihai

Ningbo, Zhejiang, China

Deep groove bearings for motors and automotive use

Cixi Sihai develops and manufactures deep groove ball bearings. Its published scope gives a bore range of 6–35 mm and lists 6000, 6200, 6300, 6800 and 6900 series. Applications include vehicles, appliances, power tools, instruments and office equipment. Automotive engine-related references should be matched to the exact assembly.

Published ranges: 6000, 6200 and 6300 series · 6800 and 6900 series · Automotive engine-bearing applications

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

Ask Sihai about 628

Yuyao Global

Ningbo, Zhejiang, China

Miniature and small bearings

Yuyao Global manufactures miniature and small bearings. Its published product organization includes rubber-sealed and metal-shielded designs, with applications in appliances, automotive systems, communications equipment and medical devices. The company describes manufacturing and inspection operations in Yuyao; closure type and lubrication should be agreed for the operating environment.

Published ranges: Miniature and small bearings · Rubber-sealed bearing designs · Metal-shielded bearing designs

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

Ask Yuyao Global about 628

Yuyao Xinfeng

Ningbo, Zhejiang, China

Small ball bearings and custom assemblies

Yuyao Xinfeng manufactures miniature and small bearings in metric and inch dimensions. Its published range includes single- and double-row deep groove bearings, steering-system bearings, full-complement ball bearings, bicycle bearings and thin-ring designs. Nonstandard plastic-bearing combinations are also described. Buyers should identify the complete assembly configuration and mating parts.

Published ranges: Single- and double-row deep groove ball bearings · Metric and inch miniature bearings · Steering and bicycle-bearing designs · Thin-ring and nonstandard assemblies

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

Ask Yuyao Xinfeng about 628

Applications the publishing works state.

ApplicationStated by
Automotive steeringYuyao Xinfeng
Automotive systemsSihai, Yuyao Global
BicyclesRCL, Yuyao Xinfeng
Circular loomsRCL
Communications equipmentYuyao Global
Encoders and motorsRCL
Household appliancesSihai, Yuyao Global
Medical equipmentYuyao Global
Office equipmentSihai
Power toolsSihai
Precision machinerySFH
Precision motorsSFH
RoboticsRCL

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.

Ask the manufacturer for these when you enquire.

Other designations with the same 8x24x8 mm envelope.

DesignationBearing familyWorks
628 ZZDeep groove ball2
628ZZ/2RSDeep groove ball1
S628ZZ/2RSDeep groove ball1

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

Neighbouring designations documented here.

DesignationEnvelope d × D × B (mm)Bearing familyWorks
620010 × 28 × 8Deep groove ball10
6200-2RS10 × 28 × 8Deep groove ball1
6200-2RZ10 × 30 × 9Deep groove ball1
6200E10 × 30 × 9Deep groove ball1
6200T1X10 × 30 × 9Deep groove ball1
6200TB10 × 30 × 9Deep groove ball1
6200zz10 × 28 × 8Deep groove ball2
6200ZZ/2RS10 × 30 × 9Deep groove ball1
620112 × 32 × 10Deep groove ball9
6201-2RS12 × 32 × 10Deep groove ball1
6201-2RZ12 × 32 × 10Deep groove ball1
6201E12 × 32 × 10Deep groove ball1
6201T1X12 × 32 × 10Deep groove ball1
6201TB12 × 32 × 10Deep groove ball1
6201ZZ12 × 32 × 10Deep groove ball2
6201ZZ/2RS12 × 32 × 10Deep groove ball1
620215 × 35 × 11Deep groove ball8
6202-2RZ15 × 35 × 11Deep groove ball1

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

Request a quote for 628.

Tick the works you want above, then send one enquiry — each manufacturer answers you separately and cannot see the others.

Open your enquiry How sourcing works here →

Figures on this page are each manufacturer’s own published material, recorded on the dates shown. How we check sources →