THE BEARINGINDEX DIRECTORY

BS3072 — 30 × 72 × 15 mm

BOUNDARY DIMENSIONSUNIT / mm

Boundary dimensions · schematic, not a product photograph or manufacturing drawing.

Angular contact

BS3072

BS3072 is a angular contact designation documented on BearingIndex from 1 manufacturer publication. The published boundary dimensions are 30 × 72 × 15 mm. The publishing works are in Zhejiang province, China. Every value below comes from that manufacturer’s own published material, with the date it was recorded.

Bore d: 30 mm
Outside D: 72 mm
Width B: 15 mm

Compare the 1 publication

What each manufacturer published.

Manufacturer	Dynamic load rating (kN)	Static load rating (kN)	Limiting speed — grease (rpm)	Reference mass (kg)	Source recorded
YJB BS3072	31	54	8000	0.35	2026-09-24	Request

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

Calculated from the published values.

Figure	How it is obtained	Result
Radial section height	(D − d) / 2	21 mm
Mean diameter d_m	(D + d) / 2	51 mm
Speed factor d_m · n	mean diameter × highest published limiting speed	408,000 mm·min⁻¹
C / C₀ load ratio	dynamic ÷ static load rating	YJB 0.57

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

The works that publish BS3072.

YJB

Hangzhou, Zhejiang, China

Precision spindle and machine-tool bearings

Hangzhou Yijia manufactures precision bearings within the Huaxing group. Its published range includes angular contact ball bearings, cylindrical roller bearings, double-direction thrust angular contact bearings and tapered roller designs. The company describes controlled grinding and assembly environments and applications in machine-tool spindles, medical equipment, instrument motors and robots.

Published ranges: Angular contact ball bearings · Cylindrical roller bearings · Double-direction thrust angular contact bearings · Tapered roller and nonstandard designs

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

Ask YJB about BS3072

Applications the publishing works state.

Application	Stated by
Instrument motors	YJB
Machine-tool spindles	YJB
Medical equipment	YJB
Robotics	YJB

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 · Limiting speed — oil · 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 30x72x15 mm envelope.

Designation	Bearing family	Works
30TAC72C	Angular contact	1

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

Neighbouring designations documented here.

Designation	Envelope d × D × B (mm)	Bearing family	Works
BS3062	30 × 62 × 15	Angular contact	1

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

Request a quote for BS3072.

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

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

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