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Drawing of 7311BEAT85SUCNB 5: ⌀55 × ⌀120 × 29 mm⌀120⌀55297311BEAT85SUCNB 5
Fig. 1: 7311BEAT85SUCNB 5, 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 7311BEAT85SUCNB 5

Combined load at an angle (angular contact), axial on one sideAngular contact ball

Bearing NSK 7311BEAT85SUCNB 5

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Specifications

Manufacturer number
ISO designation
GOST number
Equivalents
2 exact, 2 approximate
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
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Equivalents

the same size 55 × 120 × 29 from other brands

7 products
Cross-section drawing to size: Angular contact ball, 55 × 120 × 29 mm
You are viewingNSK 7311BEAT85SUCNB 5

Everything the number specifies matches: series 73, 55 × 120 × 29 mm, open, no protection, B, special design. The codes in the number are read against the NSK catalogue.

  • Cross-section drawing to size: Angular contact ball, 55 × 120 × 29 mm7311BEAT85SUCNB 5This bearingNSK55 × 120 × 29available to orderon requestyou are here
  • Cross-section drawing to size: Angular contact ball, 55 × 120 × 29 mm7311BEAT85 5NSK55 × 120 × 29available to orderon requestRequest a quote
02

Details

what this bearing is, questions

About the bearing

D 120d 55B 29
d×D×Bsize 55 × 120 × 29mm

Angular contact ball bearing 7311 B. Under GOST the same bearing is designated 66311.

Frequently asked questions

What is 66311?

It is the same bearing under GOST 3189-89: 66311 corresponds to the ISO base 7311 B. Size 55 × 120 × 29 mm, a full equivalent of 7311 B.

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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