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Drawing of 31311: ⌀55 × ⌀120 × 31.5 mm⌀120⌀55T 31.5α31311
Fig. 1: 31311, 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 31311

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

Bearing CT 31311

€6.88per piece
In stock: 46 pcs

Specifications

Manufacturer number
GOST number
d
55 mm
Bore diameter dBearing bore = shaft diameter. Source: two supplier sources
D
120 mm
Outside diameter DOutside diameter = housing bore. Source: two supplier sources
T
31.5 mm
Total width TOverall width of an assembled tapered roller bearing. Source: two supplier sources
C
121 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
137 kN
Basic static load rating C0Permissible load without rotation and under shock; ISO 76 method, manufacturer’s figure. Source: supplier data
m
1.55 kg
MassWeight of the product. Source: supplier data
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Equivalents

the same size 55 × 120 × 31.5 from other brands

14 products
Cross-section drawing to size: Tapered roller, 55 × 120 × T 31.5 mm
You are viewingCT 31311
€6.88baseline for the price comparison

Everything the number specifies matches: series 313, 55 × 120 mm, ordinary steel, design without special letters. The codes in the number are read against the CT catalogue.

  • Cross-section drawing to size: Tapered roller, 55 × 120 × T 31.5 mm31311This bearingCT55 × 120 × ?46 pcs€6.88you are here
  • Cross-section drawing to size: Tapered roller, 55 × 120 × T 31.5 mm31311no brand55 × 120 × ?available to orderon requestRequest a quote
  • Cross-section drawing to size: Tapered roller, 55 × 120 × T 31.5 mm31311NTE55 × 120 × ?available to orderon requestRequest a quote
  • Cross-section drawing to size: Tapered roller, 55 × 120 × T 31.5 mm31311SKF55 × 120 × ?available to orderon requestRequest a quote
  • Series illustration (not a photo of this item): 3131131311TIMKEN55 × 120 × ?available to orderon requestRequest a quote

Under the price: the difference from the price of this bearing (€6.88).

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Details

what this bearing is, questions

About the bearing

d×D×Tsize 55 × 120 × 31.5mm
Cdynamic 121kN
C0static 137kN
mweight 1.55kg

Tapered roller bearing 31311. Under GOST the same bearing is designated 27311.

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

Frequently asked questions

What is 27311?

It is the same bearing under GOST 3189-89: 27311 corresponds to the ISO base 31311. Size 55 × 120 × 31.5 mm, a full equivalent of 31311.

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.

03

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