KG
6304 · 20 × 52 × 15

Deep groove ball · 6304

radial — mediumaxial — low, on both sides

    Drawing of 6304: ⌀20 × ⌀52 × 15 mm6304
    Fig. 1: 6304, end view and section; rolling element geometry per the NSK catalogue. Dimensions in mm

    There is no photo of this product: the 3D model and drawing show the dimensions of 6304

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

    Bearing KG 6304

    Price on request
    Available to order

    Specifications

    Manufacturer number
    GOST number
    d
    20 mm
    Bore diameter dBearing bore = shaft diameter. Source: supplier data
    D
    52 mm
    Outside diameter DOutside diameter = housing bore. Source: supplier data
    B
    15 mm
    Width BRing width. Source: supplier data
    Seal
    open, no protection
    Clearance
    normal clearance
    C
    16.8 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
    7.8 kN
    Basic static load rating C0Permissible load without rotation and under shock; ISO 76 method, manufacturer’s figure. Source: supplier data
    Limiting speed
    19,000 rpm
    Limiting speedMechanical limit; depends on the seal (SKF 6200: 36,000 open, 17,000 with 2RSH). Source: supplier data
    m
    0.14 kg
    MassWeight of the product. Source: supplier data
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    Equivalents

    the same size 20 × 52 × 15 from other brands

    53 products
    Series illustration (not a photo of this item): 6304
    You are viewingKG 6304

    Everything the number specifies matches: series 63, 20 × 52 × 15 mm, open, no protection, normal clearance, ordinary steel, design without special letters. The codes in the number are read against the KG catalogue.

    • Series illustration (not a photo of this item): 63046304This bearingKG20 × 52 × 15available to orderon requestyou are here
    • Series illustration (not a photo of this item): 63046304CT20 × 52 × 151,182 pcs€0.79
    • Photo: 63046304SKF20 × 52 × 15available to order€3.99
    • Series illustration (not a photo of this item): 63046304FAG20 × 52 × 15available to orderon request
    • Series illustration (not a photo of this item): 63046304NTE20 × 52 × 15available to orderon request
    02

    Often bought with this

    seal 20×52, shaft snap ring Ø20, bore snap ring Ø52

    6 products
    • Seal 20×52JULU 020-52-10 TCWhy it fits: Oil seal 20×52: shaft 20 and housing bore 52, the same as the bearing
      €0.392,570 pcs
    • Seal 20×52JULU 020-52-7 TCWhy it fits: Oil seal 20×52: shaft 20 and housing bore 52, the same as the bearing
      €0.391,300 pcs
    • Shaft snap ring Ø20CT SEG 20 Z by 1000Why it fits: DIN 471 snap ring for a 20 shaft: holds the inner ring on the shaft
      €22.57available to order
    • Shaft snap ring Ø20SEG 20 Z (100 pcs)Why it fits: DIN 471 snap ring for a 20 shaft: holds the inner ring on the shaft
      Price to be confirmedavailable to order
    • Bore snap ring Ø52CT SEG 52 W by 1000Why it fits: DIN 472 snap ring for a 52 bore: holds the outer ring in the housing
      €86.47available to order
    • Bore snap ring Ø52CT-RING SEG 52 W (100 pcs)Why it fits: DIN 472 snap ring for a 52 bore: holds the outer ring in the housing
      Price to be confirmedavailable to order
    03

    Details

    what this bearing is, questions

    Where this bearing is fitted

    7 machines3 makesby parts catalogues

    1. KhTZ-2511, KhTZ-3510 KhTZ exactly this number 1 assembly · 1 pcs per machine

      manufacturer’s catalogue: Tractors KhTZ-2511 and KhTZ-3510. Operator’s manual 2511.00.001 RE

    2. Belarus-152 Belarus same geometry 4 assemblies · 4 pcs per machine

      the machine has A; ours does not

      manufacturer’s catalogue: BELARUS-152. 152-0000010 KDS. Catalogue of assembly units and parts (OJSC MTZ, 2016)

    3. Gaspardo Primavera (pneumatic seed drill) Maschio Gaspardo same geometry 2 assemblies

      ours: open; in the machine: shield on one side

      manufacturer’s catalogue: maschio_primavera-2009

    4. Belarus 922.3/​922.4 Belarus same geometry 1 assembly · 2 pcs per machine

      the machine has A; ours does not

      manufacturer’s catalogue: BELARUS 922.3/​922.4. 922-0000010 KDS. Catalogue of parts and assembly units, 2013 (RUE MTZ)

    5. Gaspardo Nina 250/​300/​400 (mechanical seed drill) Maschio Gaspardo same geometry 1 assembly

      ours: open; in the machine: shield on one side

      manufacturer’s catalogue: maschio_nina-2015

    Number in the manufacturer’s catalogue: by GOST (304) or ISO. “Same geometry” means size and type match; the version is not given in the catalogue.

    About the bearing

    D 52d 20B 15
    d×D×Bsize 20 × 52 × 15mm
    Cdynamic 16.8kN
    C0static 7.8kN
    mweight 0.14kg

    Deep groove ball bearing 6304. Under GOST the same bearing is designated 304.

    C, C₀, m and limiting speed 19,000 rpm: KG data. Another brand publishes its own figures, so compare them against that brand’s catalogue.

    Frequently asked questions

    What is 304?

    It is the same bearing under GOST 3189-89: 304 corresponds to the ISO base 6304. Size 20 × 52 × 15 mm, a full equivalent of 6304.

    Will 6304 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.

    04

    By make and unit

    this bearing is fitted in machines of these makes

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