Simplified drawing of the bearing per ISO 8826-1, dimensions of 6311 N: ⌀55 × ⌀120 × 29 mm⌀120⌀55296311 N
Fig. 1: 6311 N, simplified drawing per ISO 8826-1. Dimensions in mm

There is no photo of this product: the drawing shows the dimensions of 6311 N

Load: radial medium; axial low, on both sidesDeep groove ball

Bearing CT Malaysia 6311 N

Price on request
Available to order

Specifications

Manufacturer number
ISO designation
GOST number
d
55 mm
Bore diameter dBearing bore = shaft diameter. Source: supplier data
D
120 mm
Outside diameter DOutside diameter = housing bore. Source: supplier data
B
29 mm
Width BRing width. Source: supplier data
Seal
open, no protection
Clearance
normal clearance
C
74.1 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
45 kN
Basic static load rating C0Permissible load without rotation and under shock; ISO 76 method, manufacturer’s figure. Source: supplier data
m
1.35 kg
MassWeight of the product. Source: supplier data
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Equivalents

the same size 55 × 120 × 29 from other brands

44 products
Series illustration (not a photo of this item): 6311 N
You are viewingCT 6311 N

Same size, different design: the difference is written in the row.

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Details

what this bearing is, questions

About the bearing

D 120d 55B 29
d×D×Bsize 55 × 120 × 29mm
Cdynamic 74.1kN
C0static 45kN
mweight 1.35kg

Deep groove ball bearing 6311. Under GOST the same bearing is designated 311.

C, C₀, m: CT data. Another brand publishes its own figures, so compare them against that brand’s catalogue.

Frequently asked questions

What is 311?

It is the same bearing under GOST 3189-89: 311 corresponds to the ISO base 6311. Size 55 × 120 × 29 mm, a full equivalent of 6311.

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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