Original unbranded tapered roller bearing concept visualization

BEARING SPECIFICATION / 30211

30211 Tapered Roller Bearing

55 × 100 × 22.75 mm · A focused approach to combined load. Compare the sourced reference data and specify your SANJ requirement.

Original product concept visualization

30211 dimensional schematic: bore 55 mm, outside diameter 100 mm, width 22.75 mm — Boundary dimension schematic · not a manufacturing drawing · not to scale

Tapered Roller Bearings

30211 at a glance

30211 identifies a tapered roller bearing reference with 55 mm bore, 100 mm outside diameter and 22.75 mm overall width or height.

Bore / d: 55 mm
Outside / D: 100 mm
Width / T: 22.75 mm

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

Enquire about 30211 ↗Download reference data ↓

Reference configuration: 30211JR
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 · 30211JR ↗Source checked 2026-10-20Reference image source ↗

REFERENCE SPECIFICATION

All the details.
One clear source.

Full factual values from the source designation 30211JR. 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

30211 — JTEKT / Koyo reference data
Parameter	Reference value
d	55 mm
D	100 mm
T	22.75 mm
B	21 mm
C	18 mm
r(min.)	2 mm
r1(min.)	1.5 mm
Basic load ratings : Cr	118 kN
Basic load ratings : C0r	113 kN
Fatigue load limit : Cu	17.3 kN
Limiting speeds(Grease lub.)	3900 min-1
Limiting speeds(Oil lub.)	5200 min-1
Load center spread : a	20.7 mm
Constant e	0.40
Axial load factors : Y1	1.48
Axial load factors : Y0	0.81
da(min.)	65 mm
db(max.)	64 mm
Da(max.)	90 mm
da(min.)	88 mm
db(min.)	94 mm
Sa(min.)	4 mm
Sb(min.)	4.5 mm
ra(max.)	2 mm
rb(max.)	1.5 mm
Mass(Refer.)	0.732 kg

SELECTION CONTEXT

Match the bearing
to its duty.

30211 belongs to the tapered roller bearings family. Its reference envelope is 55 mm bore, 100 mm outside diameter and 22.75 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 55 × 100 × 22.75 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

Specify what the model
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.

30211 Tapered Roller Bearing

30211 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.

32204 ↗

32205 ↗

32206 ↗

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.