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NNU49/500- K-W33 — 500 × 670 × 170 mm

BOUNDARY DIMENSIONSUNIT / mm
B = 170 mmD = 670 mmd = 500 mm
Boundary dimensions · schematic, not a product photograph or manufacturing drawing.
Cylindrical roller

NNU49/500- K-W33

NNU49/500- K-W33 is a cylindrical roller designation documented on BearingIndex from 1 manufacturer publication. The published boundary dimensions are 500 × 670 × 170 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
500 mm
Outside D
670 mm
Width B
170 mm

Compare the 1 publication

What each manufacturer published.

ManufacturerLimiting speed — grease (rpm)Limiting speed — oil (rpm)Reference mass (kg)Source recorded
YJB
NNU49/500- K-W33		100013001622026-09-24Request

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) / 285 mm
Mean diameter dm(D + d) / 2585 mm
Speed factor dm · nmean diameter × highest published limiting speed760,500 mm·min−1

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

The works that publish NNU49/500- K-W33.

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 NNU49/500- K-W33

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 · Dynamic load rating · Static load rating · 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.

Neighbouring designations documented here.

DesignationEnvelope d × D × B (mm)Bearing familyWorks
NNU4914-K-W3370 × 100 × 30Cylindrical roller1
NNU4915-K-W3375 × 105 × 30Cylindrical roller1
NNU4916-K-W3380 × 110 × 30Cylindrical roller1
NNU4917-K-W3385 × 120 × 35Cylindrical roller1
NNU4919-K-W3395 × 130 × 35Cylindrical roller1
NNU4920-K-W33100 × 140 × 40Cylindrical roller1
NNU4921- K-W33105 × 145 × 40Cylindrical roller1
NNU4922- K-W33110 × 150 × 40Cylindrical roller1
NNU4924- K-W33120 × 165 × 45Cylindrical roller1
NNU4926- K-W33130 × 180 × 50Cylindrical roller1
NNU4928- K-W33140 × 190 × 50Cylindrical roller1
NNU4930- K-W33150 × 210 × 60Cylindrical roller1
NNU4932- K-W33160 × 220 × 60Cylindrical roller1
NNU4934- K-W33170 × 230 × 60Cylindrical roller1
NNU4936- K-W33180 × 250 × 69Cylindrical roller1
NNU4938- K-W33190 × 260 × 69Cylindrical roller1
NNU4940- K-W33200 × 280 × 80Cylindrical roller1
NNU4944- K-W33220 × 300 × 80Cylindrical roller1

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

Request a quote for NNU49/500- K-W33.

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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