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H71908-AC-TA-P4 — 40 × 62 × 12 mm

BOUNDARY DIMENSIONSUNIT / mm
B = 12 mmD = 62 mmd = 40 mm
Boundary dimensions · schematic, not a product photograph or manufacturing drawing.
Angular contact

H71908-AC-TA-P4

H71908-AC-TA-P4 is a angular contact designation documented on BearingIndex from 1 manufacturer publication. The published boundary dimensions are 40 × 62 × 12 mm. The designation ends in bore code 08, which resolves to a 40 mm bore under ISO 15 and matches what the manufacturers published. 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
40 mm
Outside D
62 mm
Width B
12 mm

Compare the 1 publication

What each manufacturer published.

ManufacturerDynamic load rating (kN)Static load rating (kN)Limiting speed — grease (rpm)Limiting speed — oil (rpm)Reference mass (kg)Source recorded
YJB
H71908-AC-TA-P4		16.613.220000320000.112026-09-24Request

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

Calculated from the published values.

FigureHow it is obtainedResult
Radial section height(D − d) / 211 mm
Mean diameter dm(D + d) / 251 mm
Speed factor dm · nmean diameter × highest published limiting speed1,632,000 mm·min−1
C / C₀ load ratiodynamic ÷ static load ratingYJB 1.26

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

The works that publish H71908-AC-TA-P4.

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 H71908-AC-TA-P4

Applications the publishing works state.

ApplicationStated by
Instrument motorsYJB
Machine-tool spindlesYJB
Medical equipmentYJB
RoboticsYJB

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 40x62x12 mm envelope.

DesignationBearing familyWorks
61908Deep groove ball1
6908Deep groove ball3
6908ZZ/2RSDeep groove ball1
71908Angular contact1
H71908-AC-TA-HQ1-P4Angular contact1
H71908-C-TA-2RZ-HQ1-P4Angular contact1
H71908-C-TA-HQ1-P4Angular contact1
H71908-C-TA-P4Angular contact1
S6908ZZ/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
H71900-AC-TA-2RZ-HQ1-P410 × 22 × 6Angular contact1
H71900-AC-TA-HQ1-P410 × 22 × 6Angular contact1
H71900-AC-TA-P410 × 22 × 6Angular contact1
H71900-C-TA-HQ1-P410 × 22 × 6Angular contact1
H71900-C-TA-P410 × 22 × 6Angular contact1
H71901-AC-TA-HQ1-P412 × 24 × 6Angular contact1
H71901-AC-TA-P412 × 24 × 6Angular contact1
H71901-C-TA-2RZ-HQ1-P412 × 24 × 6Angular contact1
H71901-C-TA-HQ1-P412 × 24 × 6Angular contact1
H71901-C-TA-P412 × 24 × 6Angular contact1
H71902-AC-TA-HQ1-P415 × 28 × 7Angular contact1
H71902-AC-TA-P415 × 28 × 7Angular contact1
H71902-C-TA-2RZ-HQ1-P415 × 28 × 7Angular contact1
H71902-C-TA-HQ1-P415 × 28 × 7Angular contact1
H71902-C-TA-P415 × 28 × 7Angular contact1
H71903-AC-TA-HQ1-P417 × 30 × 7Angular contact1
H71903-AC-TA-P417 × 30 × 7Angular contact1
H71903-C-TA-HQ1-P417 × 30 × 7Angular contact1

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

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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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