KG
Drawing of 30211: ⌀55 × ⌀100 × 22.75 mm⌀100⌀55B 21T 22.75C 18α30211
Fig. 1: 30211, end view and section; internal parts simplified per ISO 8826-1. Dimensions in mm

There is no photo of this product: the drawing shows the dimensions of 30211

Combined load at an angle (tapered, high), axial on one sideTapered roller

Bearing KG 30211

Price on request
Available to order

Specifications

Manufacturer number
GOST number
d
55 mm
Bore diameter dBearing bore = shaft diameter. Source: supplier data
D
100 mm
Outside diameter DOutside diameter = housing bore. Source: supplier data
B
21 mm
Width BRing width. Source: supplier data
T
22.75 mm
Total width TOverall width of an assembled tapered roller bearing. Source: supplier data
Cup width C
18 mm
Cup width CWidth of the outer ring of a tapered roller bearing. Source: supplier data
C
93 kN
Basic dynamic load rating CLoad for one million revolutions at 90 % reliability; the L10 life is calculated from it as (C/P)^p. ISO method, manufacturer’s figure: do not carry it over to another brand. Source: supplier data
C0
111 kN
Basic static load rating C0Permissible load without rotation and under shock; ISO 76 method, manufacturer’s figure. Source: supplier data
Limiting speed
4,900 rpm
Limiting speedMechanical limit; depends on the seal (SKF 6200: 36,000 open, 17,000 with 2RSH). Source: supplier data
m
0.74 kg
MassWeight of the product. Source: supplier data
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Equivalents

the same size 55 × 100 × 22.75 from other brands

10 products
Series illustration (not a photo of this item): 30211
You are viewingKG 30211

Everything the number specifies matches: series 302, 55 × 100 × 21 mm, ordinary steel, design without special letters. The codes in the number are read against the KG catalogue.

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Details

what this bearing is, questions

About the bearing

d×D×Tsize 55 × 100 × 22.75mm
Cdynamic 93kN
C0static 111kN
mweight 0.74kg

Tapered roller bearing 30211. Under GOST the same bearing is designated 7211.

C, C₀, m and limiting speed 4,900 rpm: KG data. Another brand publishes its own figures, so compare them against that brand’s catalogue.

Frequently asked questions

What is 7211?

It is the same bearing under GOST 3189-89: 7211 corresponds to the ISO base 30211. Size 55 × 100 × 22.75 mm, a full equivalent of 30211.

Can I fit another brand instead of this bearing?

Without checking, only an exact equivalent: the size, seal, clearance and design match according to the brand’s catalogue. Positions with the same geometry differ in seal, clearance or design, and each one says so in the equivalents block. Load ratings differ between manufacturers, so for a heavily loaded unit compare C.

How do I get a price and a lead time?

Press “Request a quote” and send the part number and quantity. We reply with the price, availability and delivery terms for your country.

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