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Drawing of 6311 2RSR: ⌀55 × ⌀120 × 29 mm6311 2RSR2RSR
Fig. 1: 6311 2RSR, end view and section; rolling element geometry per the NSK catalogue. Dimensions in mm

There is no photo of this product: the drawing shows the dimensions of 6311-2RSR

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

Bearing FAG 6311-2RSR

€23.27per piece
In stock: 100 pcs
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Specifications

Manufacturer number
ISO designation
GOST number
Equivalents
10 exact, 32 approximate
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
B
29 mm
Width BRing width. Source: two supplier sources
Seal
2RSRcontact seals on both sides
Clearance
normal clearance
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
Photo: 6311 2RSR
You are viewingFAG 6311-2RSR
€23.27baseline for the price comparison

Everything the number specifies matches: series 63, 55 × 120 × 29 mm, contact seals on both sides, normal clearance, ordinary steel, design without special letters. The codes in the number are read against the FAG catalogue.

Under the price: the difference from the price of this bearing (€23.27).
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Details

what this bearing is, questions

About the bearing

D 120d 55B 29
d×D×Bsize 55 × 120 × 29mm
mweight 1.35kg

Deep groove ball bearing 6311-2RS, design 2RSR: contact seals on both sides. Under GOST the same bearing is designated 180311.

M: FAG data. Another brand publishes its own figures, so compare them against that brand’s catalogue.

Frequently asked questions

How does 2RS differ from ZZ?

2RS has rubber seals that touch the inner ring and keep out dust and water better, which is the usual choice for field machinery. ZZ has metal shields that do not touch, allow higher speeds, and protect against dirt less well.

What is 180311?

It is the same bearing under GOST 3189-89: 18 — contact seals on both sides, 0311 corresponds to the ISO base 6311. Size 55 × 120 × 29 mm, a full equivalent of 6311-2RS.

Will 6311 2RSR C3 fit instead?

Same size, clearance greater than normal. C3 is used where the bearing runs hot or sits on the shaft with an interference fit. If the old bearing is not marked C3, take this one.

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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