Original unbranded tapered roller bearing concept visualization

BEARING SPECIFICATION / 30210

30210 Tapered Roller Bearing

50 × 90 × 21.75 mm · A focused approach to combined load. Compare the sourced reference data and specify your SANJ requirement.

Original product concept visualization

30210 dimensional schematic: bore 50 mm, outside diameter 90 mm, width 21.75 mm — Boundary dimension schematic · not a manufacturing drawing · not to scale

Tapered Roller Bearings

30210 at a glance

30210 identifies a tapered roller bearing reference with 50 mm bore, 90 mm outside diameter and 21.75 mm overall width or height.

Bore / d: 50 mm
Outside / D: 90 mm
Width / T: 21.75 mm

Tapered rollers carry combined radial and axial load. Confirm cone and cup designations, overall width and arrangement before selecting a replacement.

Enquire about 30210 ↗Download reference data ↓

Reference configuration: 30210JR
Ratings below belong to the identified JTEKT / Koyo source record. SANJ material, internal design, performance and supply scope require a confirmed quotation and datasheet.

TECHNICAL SOURCEJTEKT / Koyo · 30210JR ↗Source checked 2026-10-20Reference image source ↗

REFERENCE SPECIFICATION

All the details.
One clear source.

Full factual values from the source designation 30210JR. Mounting dimensions and reference mass relate to that design; they must be checked against the final SANJ drawing.

Load ratings: kN · dimensions: mm · speed: min⁻¹ · mass: kg

30210 — JTEKT / Koyo reference data
Parameter	Reference value
d	50 mm
D	90 mm
T	21.75 mm
B	20 mm
C	17 mm
r(min.)	1.5 mm
r1(min.)	1.5 mm
Basic load ratings : Cr	95.6 kN
Basic load ratings : C0r	91.7 kN
Fatigue load limit : Cu	13.8 kN
Limiting speeds(Grease lub.)	4300 min-1
Limiting speeds(Oil lub.)	5700 min-1
Load center spread : a	20.1 mm
Constant e	0.42
Axial load factors : Y1	1.43
Axial load factors : Y0	0.79
da(min.)	58.5 mm
db(max.)	58 mm
Da(max.)	81.5 mm
da(min.)	79 mm
db(min.)	85 mm
Sa(min.)	3 mm
Sb(min.)	4.5 mm
ra(max.)	1.5 mm
rb(max.)	1.5 mm
Mass(Refer.)	0.566 kg

SELECTION CONTEXT

Match the bearing
to its duty.

30210 belongs to the tapered roller bearings family. Its reference envelope is 50 mm bore, 90 mm outside diameter and 21.75 mm overall width or height.

Tapered rollers carry combined radial and axial load. Confirm cone and cup designations, overall width and arrangement before selecting a replacement.

For a manufacturing enquiry, provide the complete designation and operating conditions. Matching the dimensional envelope alone does not confirm interchangeability or equivalent performance.

Is the same size a direct replacement?

No. Matching 50 × 90 × 21.75 mm establishes the boundary dimensions. The full designation, tolerances, clearance, contact angle or roller arrangement, seals, cage, lubrication and performance must also be checked.

Understand bearing load ratings →

PREPARE A USEFUL ENQUIRY

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number leaves open.

A complete brief reduces assumptions and gives the quotation a clear technical basis.

Configuration

Full designation, seals or shields, accuracy, clearance, cage, material and any matched arrangement.

Operating duty

Radial and axial loads, speed, temperature, lubrication, fits, environment and expected service.

Supply requirement

Quantity, destination, packing, inspection records, drawing approval and delivery requirement.

30210 Tapered Roller Bearing

30210 at a glance

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Match the bearingto its duty.

Is the same size a direct replacement?

Specify what the modelnumber leaves open.

Configuration

Operating duty

Supply requirement

More in this bearing family.

32205 ↗

32206 ↗

32207 ↗

Let’s specify your next bearing.

All the details.
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Match the bearing
to its duty.

Specify what the model
number leaves open.